./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product21.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_spec5_product21.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 48ed910b93267406c9d869c4be4310e79bd67c2e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:22:17,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:22:17,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:22:17,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:22:17,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:22:17,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:22:17,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:22:17,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:22:17,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:22:17,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:22:17,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:22:17,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:22:17,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:22:17,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:22:17,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:22:17,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:22:17,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:22:17,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:22:17,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:22:17,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:22:17,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:22:17,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:22:17,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:22:17,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:22:17,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:22:17,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:22:17,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:22:17,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:22:17,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:22:17,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:22:17,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:22:17,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:22:17,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:22:17,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:22:17,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:22:17,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:22:17,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:22:17,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:22:17,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:22:17,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:22:17,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:22:17,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:22:17,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:22:17,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:22:17,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:22:17,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:22:17,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:22:17,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:22:17,208 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:22:17,209 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:22:17,209 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:22:17,209 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:22:17,210 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:22:17,210 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:22:17,210 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:22:17,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:22:17,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:22:17,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:22:17,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:22:17,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:22:17,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:22:17,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:22:17,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:22:17,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:22:17,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:22:17,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:22:17,222 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:22:17,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:22:17,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:22:17,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:22:17,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:22:17,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:22:17,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:22:17,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:22:17,225 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:22:17,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ed910b93267406c9d869c4be4310e79bd67c2e [2021-08-27 16:22:17,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:22:17,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:22:17,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:22:17,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:22:17,568 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:22:17,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product21.cil.c [2021-08-27 16:22:17,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1703d3879/0395add785454ccfa340d45783505212/FLAGdae05660b [2021-08-27 16:22:18,122 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:22:18,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product21.cil.c [2021-08-27 16:22:18,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1703d3879/0395add785454ccfa340d45783505212/FLAGdae05660b [2021-08-27 16:22:18,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1703d3879/0395add785454ccfa340d45783505212 [2021-08-27 16:22:18,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:22:18,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:22:18,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:22:18,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:22:18,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:22:18,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:18,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6285dcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18, skipping insertion in model container [2021-08-27 16:22:18,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:18,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:22:18,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:22:18,727 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_spec5_product21.cil.c[3403,3416] [2021-08-27 16:22:18,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:22:18,870 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:22:18,905 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_spec5_product21.cil.c[3403,3416] [2021-08-27 16:22:18,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:22:18,986 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:22:18,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18 WrapperNode [2021-08-27 16:22:18,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:22:18,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:22:18,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:22:18,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:22:18,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:22:19,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:22:19,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:22:19,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:22:19,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:22:19,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:22:19,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:22:19,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:22:19,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (1/1) ... [2021-08-27 16:22:19,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:22:19,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:22:19,190 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 16:22:19,219 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 16:22:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:22:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:22:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:22:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:22:20,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:22:20,124 INFO L299 CfgBuilder]: Removed 170 assume(true) statements. [2021-08-27 16:22:20,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:20 BoogieIcfgContainer [2021-08-27 16:22:20,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:22:20,127 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:22:20,127 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:22:20,134 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:22:20,134 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:20,134 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:22:18" (1/3) ... [2021-08-27 16:22:20,136 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1268b12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:22:20, skipping insertion in model container [2021-08-27 16:22:20,136 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:20,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:18" (2/3) ... [2021-08-27 16:22:20,136 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1268b12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:22:20, skipping insertion in model container [2021-08-27 16:22:20,136 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:20,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:20" (3/3) ... [2021-08-27 16:22:20,138 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product21.cil.c [2021-08-27 16:22:20,181 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:22:20,182 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:22:20,182 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:22:20,182 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:22:20,182 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:22:20,182 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:22:20,182 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:22:20,183 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:22:20,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 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 16:22:20,237 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:22:20,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:20,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:20,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:20,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:20,250 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:22:20,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 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 16:22:20,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:22:20,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:20,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:20,265 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:20,265 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:20,274 INFO L791 eck$LassoCheckResult]: Stem: 102#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 42#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 18#L324true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 24#L332true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 106#L134true assume 0 != main_~tmp~0; 19#L105true ~switchedOnBeforeTS~0 := 0; 10#L157true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 97#L178-1true [2021-08-27 16:22:20,274 INFO L793 eck$LassoCheckResult]: Loop: 97#L178-1true assume !false; 11#L714true assume test_~splverifierCounter~0 < 4; 17#L715true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 111#L723true assume !(0 != test_~tmp~5); 101#L723-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 86#L733true assume !(0 != test_~tmp___0~1); 7#L733-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 52#L743true assume 0 != test_~tmp___2~0; 107#L749-2true havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 64#L891true __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 21#L167true assume !(0 != ~pumpRunning~0); 5#L780true assume !(0 != ~systemActive~0); 104#L787true havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 25#L288true __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 29#L178true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~1); 97#L178-1true [2021-08-27 16:22:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:20,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:22:20,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:20,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287760561] [2021-08-27 16:22:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:20,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:20,552 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:20,691 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash 95582188, now seen corresponding path program 1 times [2021-08-27 16:22:20,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:20,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337397347] [2021-08-27 16:22:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:20,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:20,723 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:20,738 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2029607398, now seen corresponding path program 1 times [2021-08-27 16:22:20,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:20,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684483244] [2021-08-27 16:22:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:20,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:22:20,903 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 16:22:20,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:22:20,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684483244] [2021-08-27 16:22:20,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684483244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:22:20,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:22:20,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:22:20,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986180138] [2021-08-27 16:22:21,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:22:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:22:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:22:21,277 INFO L87 Difference]: Start difference. First operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 16:22:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:22:21,542 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-08-27 16:22:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:22:21,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 154 transitions. [2021-08-27 16:22:21,546 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:22:21,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 104 states and 147 transitions. [2021-08-27 16:22:21,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-08-27 16:22:21,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-08-27 16:22:21,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 147 transitions. [2021-08-27 16:22:21,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:22:21,553 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 147 transitions. [2021-08-27 16:22:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-27 16:22:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.4134615384615385) internal successors, (147), 103 states have internal predecessors, (147), 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 16:22:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2021-08-27 16:22:21,576 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:21,576 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:21,576 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:22:21,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 147 transitions. [2021-08-27 16:22:21,577 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:22:21,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:21,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:21,578 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:21,578 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:21,579 INFO L791 eck$LassoCheckResult]: Stem: 343#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 308#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 269#L324 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 270#L332 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 280#L134 assume 0 != main_~tmp~0; 271#L105 ~switchedOnBeforeTS~0 := 0; 252#L157 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 253#L178-1 [2021-08-27 16:22:21,579 INFO L793 eck$LassoCheckResult]: Loop: 253#L178-1 assume !false; 254#L714 assume test_~splverifierCounter~0 < 4; 255#L715 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 268#L723 assume !(0 != test_~tmp~5); 333#L723-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 340#L733 assume !(0 != test_~tmp___0~1); 246#L733-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 247#L743 assume 0 != test_~tmp___2~0; 245#L749-2 havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 326#L891 __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 274#L167 assume !(0 != ~pumpRunning~0); 242#L780 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 243#L838 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret61, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 290#L812-1 assume !(0 != ~pumpRunning~0); 315#L787 havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 281#L288 __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 282#L178 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~1); 253#L178-1 [2021-08-27 16:22:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:22:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:21,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475881866] [2021-08-27 16:22:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:21,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:21,615 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:21,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash -489209282, now seen corresponding path program 1 times [2021-08-27 16:22:21,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:21,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951540105] [2021-08-27 16:22:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:21,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:21,666 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:21,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1611821640, now seen corresponding path program 1 times [2021-08-27 16:22:21,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:21,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714220259] [2021-08-27 16:22:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:21,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:22:21,757 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 16:22:21,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:22:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714220259] [2021-08-27 16:22:21,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714220259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:22:21,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:22:21,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:22:21,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899510736] [2021-08-27 16:22:21,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:22:21,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:22:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:22:21,997 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. cyclomatic complexity: 45 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 16:22:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:22:22,251 INFO L93 Difference]: Finished difference Result 302 states and 432 transitions. [2021-08-27 16:22:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:22:22,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 302 states and 432 transitions. [2021-08-27 16:22:22,263 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 184 [2021-08-27 16:22:22,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 302 states to 302 states and 432 transitions. [2021-08-27 16:22:22,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 302 [2021-08-27 16:22:22,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 302 [2021-08-27 16:22:22,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 302 states and 432 transitions. [2021-08-27 16:22:22,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:22:22,280 INFO L681 BuchiCegarLoop]: Abstraction has 302 states and 432 transitions. [2021-08-27 16:22:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states and 432 transitions. [2021-08-27 16:22:22,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 201. [2021-08-27 16:22:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.407960199004975) internal successors, (283), 200 states have internal predecessors, (283), 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 16:22:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 283 transitions. [2021-08-27 16:22:22,304 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 283 transitions. [2021-08-27 16:22:22,304 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 283 transitions. [2021-08-27 16:22:22,304 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:22:22,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 283 transitions. [2021-08-27 16:22:22,305 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 138 [2021-08-27 16:22:22,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:22,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:22,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:22,307 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] [2021-08-27 16:22:22,307 INFO L791 eck$LassoCheckResult]: Stem: 783#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 735#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 691#L324 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 692#L332 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 706#L134 assume 0 != main_~tmp~0; 693#L105 ~switchedOnBeforeTS~0 := 0; 674#L157 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 675#L178-1 [2021-08-27 16:22:22,308 INFO L793 eck$LassoCheckResult]: Loop: 675#L178-1 assume !false; 803#L714 assume test_~splverifierCounter~0 < 4; 689#L715 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 690#L723 assume !(0 != test_~tmp~5); 781#L723-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 777#L733 assume !(0 != test_~tmp___0~1); 668#L733-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 669#L743 assume 0 != test_~tmp___2~0; 667#L749-2 havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 757#L891 __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 696#L167 assume !(0 != ~pumpRunning~0); 664#L780 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 665#L838 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret61, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 714#L812-1 assume !(0 != ~pumpRunning~0); 741#L787 havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 782#L288 __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 809#L178 assume 2 != __utac_acc__Specification5_spec__3_~tmp~1;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 808#L891-1 __utac_acc__Specification5_spec__3_#t~ret10 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret10;havoc __utac_acc__Specification5_spec__3_#t~ret10; 807#L182 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 675#L178-1 [2021-08-27 16:22:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:22,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:22:22,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:22,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457299553] [2021-08-27 16:22:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:22,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,357 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,417 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1978697447, now seen corresponding path program 1 times [2021-08-27 16:22:22,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:22,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834753058] [2021-08-27 16:22:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:22,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,424 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1522585107, now seen corresponding path program 1 times [2021-08-27 16:22:22,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:22,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787277028] [2021-08-27 16:22:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:22,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,478 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:22,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:10,255 WARN L207 SmtUtils]: Spent 47.40 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:23:59,486 WARN L207 SmtUtils]: Spent 23.96 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:23:59,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:23:59 BoogieIcfgContainer [2021-08-27 16:23:59,606 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:23:59,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:23:59,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:23:59,607 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:23:59,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:20" (3/4) ... [2021-08-27 16:23:59,609 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:23:59,641 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:23:59,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:23:59,643 INFO L168 Benchmark]: Toolchain (without parser) took 101136.10 ms. Allocated memory was 50.3 MB in the beginning and 119.5 MB in the end (delta: 69.2 MB). Free memory was 26.5 MB in the beginning and 76.0 MB in the end (delta: -49.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,643 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:23:59,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.3 MB in the beginning and 37.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.52 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 34.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,644 INFO L168 Benchmark]: Boogie Preprocessor took 67.06 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 31.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,645 INFO L168 Benchmark]: RCFGBuilder took 981.40 ms. Allocated memory is still 60.8 MB. Free memory was 31.4 MB in the beginning and 35.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,646 INFO L168 Benchmark]: BuchiAutomizer took 99478.77 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 35.3 MB in the beginning and 79.1 MB in the end (delta: -43.8 MB). Peak memory consumption was 76.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,646 INFO L168 Benchmark]: Witness Printer took 35.20 ms. Allocated memory is still 119.5 MB. Free memory was 79.1 MB in the beginning and 76.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:59,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 479.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.3 MB in the beginning and 37.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.52 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 34.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.06 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 31.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 981.40 ms. Allocated memory is still 60.8 MB. Free memory was 31.4 MB in the beginning and 35.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 99478.77 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 35.3 MB in the beginning and 79.1 MB in the end (delta: -43.8 MB). Peak memory consumption was 76.5 MB. Max. memory is 16.1 GB. * Witness Printer took 35.20 ms. Allocated memory is still 119.5 MB. Free memory was 79.1 MB in the beginning and 76.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 201 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 99.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 98.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 37.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 101 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 201 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 344 SDtfs, 1072 SDslu, 466 SDs, 0 SdLazy, 103 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 329.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 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: 713]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, retValue_acc=0, NULL=1, NULL=0, NULL=15007, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@543e877d=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=14989, methaneLevelCritical=0, NULL=0, NULL=0, tmp=0, NULL=15000, NULL=0, tmp=0, tmp=1, tmp___1=0, NULL=0, NULL=0, NULL=14994, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72f11167=0, retValue_acc=0, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=15004, NULL=14998, NULL=14987, NULL=15014, \result=0, NULL=14997, NULL=0, systemActive=1, waterLevel=1, NULL=15001, \result=1, NULL=0, NULL=0, NULL=0, NULL=15013, NULL=14999, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, NULL=15011, tmp___0=0, \result=1, NULL=14993, head=0, pumpRunning=0, tmp=1, NULL=14996, \result=0, NULL=14988, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@86bb218=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29d13ab=0, NULL=0, NULL=0, retValue_acc=1, NULL=14995, NULL=0, NULL=0, NULL=0, NULL=15006, NULL=15005, NULL=0, NULL=15009, tmp___2=51, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, NULL=15008, NULL=15012, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@488efb3c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1778e0da=51, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@648d6776=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e756f90=0, head=0, NULL=0, tmp=0, NULL=14990, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@634a9ce1=0, NULL=15003, NULL=15010, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35194335=0, NULL=14991, NULL=15002, NULL=14992} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L151] int switchedOnBeforeTS ; [L213] int waterLevel = 1; [L214] int methaneLevelCritical = 0; [L506] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L770] int pumpRunning = 0; [L771] int systemActive = 1; [L125] int retValue_acc ; [L126] int tmp ; [L328] int retValue_acc ; [L331] retValue_acc = 1 [L332] return (retValue_acc); [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L156] switchedOnBeforeTS = 0 [L704] int splverifierCounter ; [L705] int tmp ; [L706] int tmp___0 ; [L707] int tmp___1 ; [L708] int tmp___2 ; [L711] splverifierCounter = 0 Loop: [L713] COND TRUE 1 [L715] COND TRUE splverifierCounter < 4 [L721] tmp = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp)) [L731] tmp___0 = __VERIFIER_nondet_int() [L733] COND FALSE !(\read(tmp___0)) [L741] tmp___2 = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp___2) [L887] int retValue_acc ; [L890] retValue_acc = pumpRunning [L891] return (retValue_acc); [L165] switchedOnBeforeTS = isPumpRunning() [L780] COND FALSE !(\read(pumpRunning)) [L787] COND TRUE \read(systemActive) [L835] int tmp ; [L838] COND FALSE !(\read(pumpRunning)) [L809] int tmp ; [L812] COND FALSE !(\read(pumpRunning)) [L171] int tmp ; [L172] int tmp___0 ; [L284] int retValue_acc ; [L287] retValue_acc = waterLevel [L288] return (retValue_acc); [L176] tmp = getWaterLevel() [L178] COND TRUE tmp != 2 [L887] int retValue_acc ; [L890] retValue_acc = pumpRunning [L891] return (retValue_acc); [L180] tmp___0 = isPumpRunning() [L182] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:23:59,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...