./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product58.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_product58.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 886ac0ae3890ab27ff2aed3926ccccbc5335b8b2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:05:53,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:53,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:53,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:53,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:53,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:53,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:53,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:53,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:53,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:53,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:53,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:53,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:53,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:53,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:53,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:53,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:53,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:53,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:53,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:53,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:53,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:53,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:53,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:53,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:53,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:53,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:53,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:53,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:53,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:53,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:53,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:53,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:53,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:53,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:53,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:53,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:53,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:53,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:53,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:53,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:53,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:53,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:53,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:53,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:53,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:53,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:53,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:53,884 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:53,885 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:53,885 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:53,885 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:53,885 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:53,885 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:53,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:53,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:53,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:53,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:53,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:53,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:53,889 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:53,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 886ac0ae3890ab27ff2aed3926ccccbc5335b8b2 [2021-08-27 16:05:54,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:54,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:54,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:54,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:54,143 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:54,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2021-08-27 16:05:54,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722fb6adf/37969559f4384f72b43372d19fdd0378/FLAGabe79fa20 [2021-08-27 16:05:54,506 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:54,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product58.cil.c [2021-08-27 16:05:54,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722fb6adf/37969559f4384f72b43372d19fdd0378/FLAGabe79fa20 [2021-08-27 16:05:54,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722fb6adf/37969559f4384f72b43372d19fdd0378 [2021-08-27 16:05:54,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:54,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:54,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:54,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:54,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:54,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:54" (1/1) ... [2021-08-27 16:05:54,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636899e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:54, skipping insertion in model container [2021-08-27 16:05:54,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:54" (1/1) ... [2021-08-27 16:05:54,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:54,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:55,208 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_product58.cil.c[18846,18859] [2021-08-27 16:05:55,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:55,214 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:55,276 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_product58.cil.c[18846,18859] [2021-08-27 16:05:55,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:55,289 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55 WrapperNode [2021-08-27 16:05:55,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:55,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:55,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:55,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:55,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:55,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:55,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:55,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:55,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:55,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:55,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:55,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:55,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (1/1) ... [2021-08-27 16:05:55,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:55,422 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 16:05:55,431 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 16:05:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:56,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:56,021 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-27 16:05:56,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:56 BoogieIcfgContainer [2021-08-27 16:05:56,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:56,023 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:56,023 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:56,026 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:56,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:56,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:54" (1/3) ... [2021-08-27 16:05:56,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ef0a799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:56, skipping insertion in model container [2021-08-27 16:05:56,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:56,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:55" (2/3) ... [2021-08-27 16:05:56,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ef0a799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:56, skipping insertion in model container [2021-08-27 16:05:56,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:56,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:56" (3/3) ... [2021-08-27 16:05:56,029 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product58.cil.c [2021-08-27 16:05:56,061 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:56,062 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:56,062 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:56,062 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:56,062 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:56,062 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:56,062 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:56,063 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:56,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 16:05:56,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:05:56,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:56,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:56,118 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,118 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,118 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:56,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 16:05:56,128 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:05:56,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:56,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:56,133 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,133 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,141 INFO L791 eck$LassoCheckResult]: Stem: 122#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);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~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 45#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 43#L882true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 59#L890true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 10#L978true assume 0 != main_~tmp~10; 135#L954true ~methAndRunningLastTime~0 := 0; 106#L824true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 21#L835-1true [2021-08-27 16:05:56,142 INFO L793 eck$LassoCheckResult]: Loop: 21#L835-1true assume !false; 130#L533true assume test_~splverifierCounter~0 < 4; 96#L534true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 5#L542true assume !(0 != test_~tmp~3); 64#L542-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 49#L552true assume !(0 != test_~tmp___0~0); 86#L552-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 92#L562true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 58#L570-2true assume !(0 != ~pumpRunning~0); 67#L601true assume !(0 != ~systemActive~0); 82#L608true havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;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; 104#L93-2true __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 128#L835true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 21#L835-1true [2021-08-27 16:05:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:05:56,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558962065] [2021-08-27 16:05:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,338 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 6139403, now seen corresponding path program 1 times [2021-08-27 16:05:56,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077615103] [2021-08-27 16:05:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:56,462 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 16:05:56,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:56,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077615103] [2021-08-27 16:05:56,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077615103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:56,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:56,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:56,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247849185] [2021-08-27 16:05:56,466 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:56,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:56,484 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 16:05:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:56,521 INFO L93 Difference]: Finished difference Result 136 states and 195 transitions. [2021-08-27 16:05:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:56,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 195 transitions. [2021-08-27 16:05:56,530 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:05:56,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 129 states and 187 transitions. [2021-08-27 16:05:56,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2021-08-27 16:05:56,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-08-27 16:05:56,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 187 transitions. [2021-08-27 16:05:56,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:56,538 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 187 transitions. [2021-08-27 16:05:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-08-27 16:05:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.449612403100775) internal successors, (187), 128 states have internal predecessors, (187), 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 16:05:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2021-08-27 16:05:56,566 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:56,566 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:56,574 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:05:56,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 187 transitions. [2021-08-27 16:05:56,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:05:56,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:56,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:56,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,580 INFO L791 eck$LassoCheckResult]: Stem: 405#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);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~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 355#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 351#L882 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 352#L890 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 293#L978 assume 0 != main_~tmp~10; 294#L954 ~methAndRunningLastTime~0 := 0; 402#L824 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 313#L835-1 [2021-08-27 16:05:56,581 INFO L793 eck$LassoCheckResult]: Loop: 313#L835-1 assume !false; 314#L533 assume test_~splverifierCounter~0 < 4; 398#L534 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 283#L542 assume !(0 != test_~tmp~3); 285#L542-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 360#L552 assume !(0 != test_~tmp___0~0); 296#L552-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 394#L562 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 354#L570-2 assume !(0 != ~pumpRunning~0); 371#L601 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 331#L659 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 332#L633-1 assume !(0 == ~pumpRunning~0); 307#L608 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;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; 391#L93-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 400#L835 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 313#L835-1 [2021-08-27 16:05:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:05:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184520089] [2021-08-27 16:05:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,624 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,683 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1675691820, now seen corresponding path program 1 times [2021-08-27 16:05:56,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129935558] [2021-08-27 16:05:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:56,698 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 16:05:56,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:56,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129935558] [2021-08-27 16:05:56,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129935558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:56,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:56,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:56,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491757620] [2021-08-27 16:05:56,700 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:56,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:56,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:56,701 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. cyclomatic complexity: 60 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 16:05:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:56,755 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2021-08-27 16:05:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:56,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 241 transitions. [2021-08-27 16:05:56,757 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-08-27 16:05:56,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 241 transitions. [2021-08-27 16:05:56,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2021-08-27 16:05:56,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-08-27 16:05:56,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 241 transitions. [2021-08-27 16:05:56,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:56,771 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 241 transitions. [2021-08-27 16:05:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-08-27 16:05:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.393063583815029) internal successors, (241), 172 states have internal predecessors, (241), 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 16:05:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2021-08-27 16:05:56,776 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:56,776 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:56,776 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:05:56,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 241 transitions. [2021-08-27 16:05:56,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-08-27 16:05:56,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:56,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:56,777 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,777 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 16:05:56,778 INFO L791 eck$LassoCheckResult]: Stem: 720#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);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~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 663#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 658#L882 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 659#L890 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 603#L978 assume 0 != main_~tmp~10; 604#L954 ~methAndRunningLastTime~0 := 0; 713#L824 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 620#L835-1 [2021-08-27 16:05:56,778 INFO L793 eck$LassoCheckResult]: Loop: 620#L835-1 assume !false; 621#L533 assume test_~splverifierCounter~0 < 4; 709#L534 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 591#L542 assume !(0 != test_~tmp~3); 593#L542-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 668#L552 assume !(0 != test_~tmp___0~0); 602#L552-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 705#L562 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 657#L570-2 assume !(0 != ~pumpRunning~0); 680#L601 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 637#L659 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 638#L633-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 699#L133-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 648#L138-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 607#L779-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 608#L779-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 622#L785-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 623#L637-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 613#L608 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;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; 700#L93-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 712#L835 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 620#L835-1 [2021-08-27 16:05:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:05:56,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847973948] [2021-08-27 16:05:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,802 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:56,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2063430786, now seen corresponding path program 1 times [2021-08-27 16:05:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085881758] [2021-08-27 16:05:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:56,869 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 16:05:56,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:56,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085881758] [2021-08-27 16:05:56,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085881758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:56,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:56,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:05:56,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289694459] [2021-08-27 16:05:56,870 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:56,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:05:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:05:56,870 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. cyclomatic complexity: 70 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:05:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:56,951 INFO L93 Difference]: Finished difference Result 481 states and 661 transitions. [2021-08-27 16:05:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:05:56,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 481 states and 661 transitions. [2021-08-27 16:05:56,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 338 [2021-08-27 16:05:56,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 481 states to 481 states and 661 transitions. [2021-08-27 16:05:56,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-08-27 16:05:56,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-08-27 16:05:56,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 661 transitions. [2021-08-27 16:05:56,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:56,962 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 661 transitions. [2021-08-27 16:05:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 661 transitions. [2021-08-27 16:05:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 185. [2021-08-27 16:05:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 184 states have internal predecessors, (253), 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 16:05:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 253 transitions. [2021-08-27 16:05:56,976 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-08-27 16:05:56,977 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-08-27 16:05:56,977 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:05:56,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 253 transitions. [2021-08-27 16:05:56,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:05:56,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:56,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:56,979 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:56,979 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 16:05:56,979 INFO L791 eck$LassoCheckResult]: Stem: 1398#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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);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~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 1330#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1325#L882 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1326#L890 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 1267#L978 assume 0 != main_~tmp~10; 1268#L954 ~methAndRunningLastTime~0 := 0; 1389#L824 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1390#L835-1 [2021-08-27 16:05:56,979 INFO L793 eck$LassoCheckResult]: Loop: 1390#L835-1 assume !false; 1418#L533 assume test_~splverifierCounter~0 < 4; 1417#L534 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 1415#L542 assume !(0 != test_~tmp~3); 1411#L542-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 1335#L552 assume !(0 != test_~tmp___0~0); 1266#L552-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 1377#L562 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1324#L570-2 assume !(0 != ~pumpRunning~0); 1348#L601 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1303#L659 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1304#L633-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1370#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1314#L138-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1315#L779-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1272#L779-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1287#L785-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1288#L637-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1277#L608 havoc __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;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; 1429#L93-2 __utac_acc__Specification2_spec__2_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret78;havoc __utac_acc__Specification2_spec__2_#t~ret78; 1421#L835 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1390#L835-1 [2021-08-27 16:05:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:05:56,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:56,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095272237] [2021-08-27 16:05:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:56,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,012 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:57,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1383372416, now seen corresponding path program 1 times [2021-08-27 16:05:57,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:57,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327981764] [2021-08-27 16:05:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:57,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,040 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1138453254, now seen corresponding path program 1 times [2021-08-27 16:05:57,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:57,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4146675] [2021-08-27 16:05:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:57,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,058 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:57,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:38,626 WARN L207 SmtUtils]: Spent 41.27 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:21,832 WARN L207 SmtUtils]: Spent 20.65 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:21,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:21 BoogieIcfgContainer [2021-08-27 16:07:21,971 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:21,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:21,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:21,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:21,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:56" (3/4) ... [2021-08-27 16:07:21,978 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:22,039 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:22,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:22,045 INFO L168 Benchmark]: Toolchain (without parser) took 87116.09 ms. Allocated memory was 52.4 MB in the beginning and 104.9 MB in the end (delta: 52.4 MB). Free memory was 29.4 MB in the beginning and 24.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,046 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:22,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.57 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.3 MB in the beginning and 46.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.86 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 42.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,046 INFO L168 Benchmark]: Boogie Preprocessor took 25.78 ms. Allocated memory is still 69.2 MB. Free memory was 42.8 MB in the beginning and 39.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,046 INFO L168 Benchmark]: RCFGBuilder took 631.78 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 47.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,047 INFO L168 Benchmark]: BuchiAutomizer took 85948.54 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 46.8 MB in the beginning and 27.3 MB in the end (delta: 19.5 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,047 INFO L168 Benchmark]: Witness Printer took 72.75 ms. Allocated memory is still 104.9 MB. Free memory was 27.3 MB in the beginning and 24.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:22,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.57 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.3 MB in the beginning and 46.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.86 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 42.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.78 ms. Allocated memory is still 69.2 MB. Free memory was 42.8 MB in the beginning and 39.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 631.78 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 47.2 MB in the end (delta: -7.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85948.54 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 46.8 MB in the beginning and 27.3 MB in the end (delta: 19.5 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. * Witness Printer took 72.75 ms. Allocated memory is still 104.9 MB. Free memory was 27.3 MB in the beginning and 24.3 MB in the end (delta: 3.0 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 185 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 85.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 38.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 296 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 185 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 729 SDtfs, 687 SDslu, 533 SDs, 0 SdLazy, 93 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 532]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31995} State at position 1 is {NULL=0, NULL=32001, NULL=0, NULL=0, NULL=31995, NULL=32006, NULL=32017, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3bd918ea=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f3f56b4=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@421a8466=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f625921=0, tmp=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=0, NULL=31998, NULL=32009, cleanupTimeShifts=4, NULL=32000, NULL=32002, tmp=1, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3308ee25=0, NULL=0, NULL=32023, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=0, retValue_acc=1, NULL=0, \result=1, NULL=32021, NULL=0, NULL=32016, NULL=0, tmp=1, NULL=0, methAndRunningLastTime=0, NULL=32014, head=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32013, NULL=32019, NULL=31997, NULL=32010, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b853f2=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=32022, NULL=0, NULL=32007, \result=0, NULL=0, NULL=32011, NULL=32003, retValue_acc=0, NULL=32020, \result=0, NULL=0, NULL=32008, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11be443d=0, NULL=32012, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14ec3cab=0, NULL=32018, NULL=32004, tmp___0=0, tmp___2=76, splverifierCounter=0, NULL=0, \result=0, NULL=32005, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449f28ee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@689ed7db=0, NULL=31996, NULL=31999, NULL=0, NULL=32015, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L322] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L593] int pumpRunning = 0; [L594] int systemActive = 1; [L818] int methAndRunningLastTime ; [L895] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L886] int retValue_acc ; [L889] retValue_acc = 1 [L890] return (retValue_acc); [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L823] methAndRunningLastTime = 0 [L523] int splverifierCounter ; [L524] int tmp ; [L525] int tmp___0 ; [L526] int tmp___1 ; [L527] int tmp___2 ; [L530] splverifierCounter = 0 Loop: [L532] COND TRUE 1 [L534] COND TRUE splverifierCounter < 4 [L540] tmp = __VERIFIER_nondet_int() [L542] COND FALSE !(\read(tmp)) [L550] tmp___0 = __VERIFIER_nondet_int() [L552] COND FALSE !(\read(tmp___0)) [L560] tmp___2 = __VERIFIER_nondet_int() [L562] COND TRUE \read(tmp___2) [L812] systemActive = 1 [L601] COND FALSE !(\read(pumpRunning)) [L608] COND TRUE \read(systemActive) [L656] int tmp ; [L659] COND FALSE !(\read(pumpRunning)) [L630] int tmp ; [L633] COND TRUE ! pumpRunning [L771] int retValue_acc ; [L772] int tmp ; [L773] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L777] tmp = isHighWaterSensorDry() [L779] COND TRUE \read(tmp) [L780] tmp___0 = 0 [L784] retValue_acc = tmp___0 [L785] return (retValue_acc); [L635] tmp = isHighWaterLevel() [L637] COND FALSE !(\read(tmp)) [L828] int tmp ; [L829] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L833] tmp = isMethaneLevelCritical() [L835] COND FALSE !(\read(tmp)) [L851] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:22,085 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...