./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product54.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product54.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 ec670bcbf6c6e1b5a4e4315225f9cccdc4aca27e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:19:13,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:19:13,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:19:13,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:19:13,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:19:13,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:19:13,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:19:13,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:19:13,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:19:13,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:19:13,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:19:13,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:19:13,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:19:13,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:19:13,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:19:13,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:19:13,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:19:13,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:19:13,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:19:13,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:19:13,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:19:13,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:19:13,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:19:13,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:19:13,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:19:13,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:19:13,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:19:13,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:19:13,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:19:13,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:19:13,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:19:13,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:19:13,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:19:13,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:19:13,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:19:13,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:19:13,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:19:13,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:19:13,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:19:13,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:19:13,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:19:13,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:19:13,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:19:13,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:19:13,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:19:13,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:19:13,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:19:13,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:19:13,324 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:19:13,324 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:19:13,324 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:19:13,324 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:19:13,324 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:19:13,328 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:19:13,328 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:19:13,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:19:13,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:19:13,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:19:13,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:19:13,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:19:13,330 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:19:13,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:19:13,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:19:13,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:19:13,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:19:13,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:19:13,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:19:13,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:19:13,333 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:19:13,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec670bcbf6c6e1b5a4e4315225f9cccdc4aca27e [2021-08-27 16:19:13,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:19:13,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:19:13,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:19:13,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:19:13,686 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:19:13,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product54.cil.c [2021-08-27 16:19:13,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de793664d/7d7d5cd3b0bc46ffa67372c91757befe/FLAG9621e143d [2021-08-27 16:19:14,144 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:19:14,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product54.cil.c [2021-08-27 16:19:14,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de793664d/7d7d5cd3b0bc46ffa67372c91757befe/FLAG9621e143d [2021-08-27 16:19:14,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de793664d/7d7d5cd3b0bc46ffa67372c91757befe [2021-08-27 16:19:14,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:19:14,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:19:14,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:14,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:19:14,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:19:14,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:14" (1/1) ... [2021-08-27 16:19:14,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21853605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:14, skipping insertion in model container [2021-08-27 16:19:14,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:14" (1/1) ... [2021-08-27 16:19:14,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:19:14,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:19:14,910 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product54.cil.c[18209,18222] [2021-08-27 16:19:14,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:14,929 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:19:15,005 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product54.cil.c[18209,18222] [2021-08-27 16:19:15,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:15,024 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:19:15,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15 WrapperNode [2021-08-27 16:19:15,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:15,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:15,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:19:15,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:19:15,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:15,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:19:15,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:19:15,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:19:15,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:19:15,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:19:15,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:19:15,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:19:15,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:19:15,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:19:15,181 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 16:19:15,194 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 16:19:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:19:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:19:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:19:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:19:16,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:19:16,199 INFO L299 CfgBuilder]: Removed 278 assume(true) statements. [2021-08-27 16:19:16,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16 BoogieIcfgContainer [2021-08-27 16:19:16,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:19:16,204 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:19:16,204 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:19:16,207 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:19:16,208 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:19:14" (1/3) ... [2021-08-27 16:19:16,210 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b3855c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:16, skipping insertion in model container [2021-08-27 16:19:16,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (2/3) ... [2021-08-27 16:19:16,211 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b3855c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:16, skipping insertion in model container [2021-08-27 16:19:16,211 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16" (3/3) ... [2021-08-27 16:19:16,212 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product54.cil.c [2021-08-27 16:19:16,253 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:19:16,253 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:19:16,253 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:19:16,253 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:19:16,253 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:19:16,253 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:19:16,253 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:19:16,253 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:19:16,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 16:19:16,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-08-27 16:19:16,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:16,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:16,308 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,309 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,309 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:19:16,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 16:19:16,317 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-08-27 16:19:16,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:16,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:16,318 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,318 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,322 INFO L791 eck$LassoCheckResult]: Stem: 156#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 49#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 7#L982true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 124#L990true main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 158#L468true assume 0 != main_~tmp~7; 34#L442true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 10#L365-1true [2021-08-27 16:19:16,323 INFO L793 eck$LassoCheckResult]: Loop: 10#L365-1true assume !false; 48#L58true assume test_~splverifierCounter~0 < 4; 138#L59true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 155#L67true assume !(0 != test_~tmp~0); 120#L67-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 100#L77true assume !(0 != test_~tmp___0~0); 112#L77-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 73#L87true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 133#L95-2true assume !(0 != ~pumpRunning~0); 54#L131true assume !(0 != ~systemActive~0); 85#L138true havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 139#L923true __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 70#L365true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 10#L365-1true [2021-08-27 16:19:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:19:16,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:16,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344374294] [2021-08-27 16:19:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:16,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:16,540 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:16,683 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1675526973, now seen corresponding path program 1 times [2021-08-27 16:19:16,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:16,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064510358] [2021-08-27 16:19:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:16,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:16,737 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 16:19:16,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:16,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064510358] [2021-08-27 16:19:16,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064510358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:16,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:16,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:16,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863812112] [2021-08-27 16:19:16,747 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:16,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:16,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:16,771 INFO L87 Difference]: Start difference. First operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 16:19:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:16,840 INFO L93 Difference]: Finished difference Result 186 states and 275 transitions. [2021-08-27 16:19:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:16,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 275 transitions. [2021-08-27 16:19:16,847 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-08-27 16:19:16,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 179 states and 267 transitions. [2021-08-27 16:19:16,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 179 [2021-08-27 16:19:16,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 179 [2021-08-27 16:19:16,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 267 transitions. [2021-08-27 16:19:16,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:16,862 INFO L681 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 16:19:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states and 267 transitions. [2021-08-27 16:19:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-08-27 16:19:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 179 states have (on average 1.4916201117318435) internal successors, (267), 178 states have internal predecessors, (267), 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 16:19:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 267 transitions. [2021-08-27 16:19:16,898 INFO L704 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 16:19:16,898 INFO L587 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 16:19:16,898 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:19:16,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 267 transitions. [2021-08-27 16:19:16,899 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-08-27 16:19:16,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:16,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:16,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,902 INFO L791 eck$LassoCheckResult]: Stem: 553#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 457#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 387#L982 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 388#L990 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 538#L468 assume 0 != main_~tmp~7; 439#L442 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 394#L365-1 [2021-08-27 16:19:16,903 INFO L793 eck$LassoCheckResult]: Loop: 394#L365-1 assume !false; 395#L58 assume test_~splverifierCounter~0 < 4; 456#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 548#L67 assume !(0 != test_~tmp~0); 409#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 517#L77 assume !(0 != test_~tmp___0~0); 474#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 488#L87 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 489#L95-2 assume !(0 != ~pumpRunning~0); 466#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 467#L215 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret12, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 458#L189-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 460#L163-3 assume !(0 == ~pumpRunning~0); 425#L138 havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 501#L923 __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 483#L365 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 394#L365-1 [2021-08-27 16:19:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:19:16,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:16,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145869349] [2021-08-27 16:19:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:16,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:16,993 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1905346314, now seen corresponding path program 1 times [2021-08-27 16:19:17,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349492142] [2021-08-27 16:19:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:17,069 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 16:19:17,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:17,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349492142] [2021-08-27 16:19:17,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349492142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:17,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:17,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:17,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752879680] [2021-08-27 16:19:17,070 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:17,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:17,071 INFO L87 Difference]: Start difference. First operand 179 states and 267 transitions. cyclomatic complexity: 90 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:17,207 INFO L93 Difference]: Finished difference Result 184 states and 255 transitions. [2021-08-27 16:19:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:17,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 255 transitions. [2021-08-27 16:19:17,210 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:19:17,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 184 states and 255 transitions. [2021-08-27 16:19:17,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 184 [2021-08-27 16:19:17,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 184 [2021-08-27 16:19:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 255 transitions. [2021-08-27 16:19:17,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:17,219 INFO L681 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 16:19:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 255 transitions. [2021-08-27 16:19:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-08-27 16:19:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 183 states have internal predecessors, (255), 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 16:19:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 255 transitions. [2021-08-27 16:19:17,234 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 16:19:17,234 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 16:19:17,234 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:19:17,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 255 transitions. [2021-08-27 16:19:17,236 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:19:17,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:17,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:17,236 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,237 INFO L791 eck$LassoCheckResult]: Stem: 891#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 805#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 756#L982 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 757#L990 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 876#L468 assume 0 != main_~tmp~7; 792#L442 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 762#L365-1 [2021-08-27 16:19:17,237 INFO L793 eck$LassoCheckResult]: Loop: 762#L365-1 assume !false; 763#L58 assume test_~splverifierCounter~0 < 4; 804#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 884#L67 assume !(0 != test_~tmp~0); 767#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 857#L77 assume !(0 != test_~tmp___0~0); 818#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 830#L87 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 831#L95-2 assume !(0 != ~pumpRunning~0); 882#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 900#L215 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret12, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 806#L189-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 807#L163-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~10;havoc isHighWaterSensorDry_~retValue_acc~10; 873#L931-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~10 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~10; 770#L936-3 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 771#L317-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 889#L317-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 890#L323-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 835#L167-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 785#L138 havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 841#L923 __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 827#L365 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 762#L365-1 [2021-08-27 16:19:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:19:17,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404008070] [2021-08-27 16:19:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,304 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,384 INFO L82 PathProgramCache]: Analyzing trace with hash -659266398, now seen corresponding path program 1 times [2021-08-27 16:19:17,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627953966] [2021-08-27 16:19:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,391 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,402 INFO L82 PathProgramCache]: Analyzing trace with hash 594038728, now seen corresponding path program 1 times [2021-08-27 16:19:17,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737225153] [2021-08-27 16:19:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,445 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:59,907 WARN L207 SmtUtils]: Spent 42.13 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:20:46,499 WARN L207 SmtUtils]: Spent 21.82 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:20:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:20:46 BoogieIcfgContainer [2021-08-27 16:20:46,575 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:20:46,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:20:46,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:20:46,576 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:20:46,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16" (3/4) ... [2021-08-27 16:20:46,579 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:20:46,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:20:46,615 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:20:46,616 INFO L168 Benchmark]: Toolchain (without parser) took 92080.28 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 48.8 MB in the beginning and 37.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 49.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,616 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 69.2 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:20:46,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.53 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 45.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.40 ms. Allocated memory is still 69.2 MB. Free memory was 45.3 MB in the beginning and 40.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,617 INFO L168 Benchmark]: Boogie Preprocessor took 59.51 ms. Allocated memory is still 69.2 MB. Free memory was 40.6 MB in the beginning and 37.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,618 INFO L168 Benchmark]: RCFGBuilder took 1043.96 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 37.0 MB in the beginning and 47.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,618 INFO L168 Benchmark]: BuchiAutomizer took 90371.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 40.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,618 INFO L168 Benchmark]: Witness Printer took 39.07 ms. Allocated memory is still 109.1 MB. Free memory was 40.8 MB in the beginning and 37.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:46,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 69.2 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.53 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 45.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.40 ms. Allocated memory is still 69.2 MB. Free memory was 45.3 MB in the beginning and 40.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.51 ms. Allocated memory is still 69.2 MB. Free memory was 40.6 MB in the beginning and 37.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1043.96 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 37.0 MB in the beginning and 47.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 90371.43 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 40.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * Witness Printer took 39.07 ms. Allocated memory is still 109.1 MB. Free memory was 40.8 MB in the beginning and 37.8 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 184 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 90.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 89.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 39.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 475 SDtfs, 404 SDslu, 75 SDs, 0 SdLazy, 45 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=27833} State at position 1 is {NULL=0, NULL=0, NULL=27857, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c722e60=81, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e838ce6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bb93f7b=0, NULL=27833, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49f2c667=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b38e0e1=0, NULL=27843, retValue_acc=1, methaneLevelCritical=0, NULL=27848, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f15ffe0=0, NULL=0, retValue_acc=0, NULL=27852, NULL=0, tmp___1=0, NULL=0, NULL=27858, cleanupTimeShifts=4, tmp=0, waterLevel=1, NULL=0, NULL=27851, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=27853, NULL=27849, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, retValue_acc=1, tmp=1, NULL=0, NULL=27841, NULL=27840, NULL=27847, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a86da09=0, NULL=27838, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a510a46=0, tmp=0, head=0, NULL=0, NULL=0, NULL=27839, retValue_acc=0, NULL=27845, NULL=27854, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cc0dae4=0, NULL=27856, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31591f6f=0, tmp=0, NULL=0, tmp___0=0, NULL=0, NULL=27855, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21c02c83=0, NULL=0, NULL=27834, tmp=0, tmp___0=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=27861, NULL=27836, \result=0, NULL=27844, NULL=0, NULL=0, NULL=27850, NULL=27837, NULL=27860, tmp___2=81, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=27835, NULL=0, NULL=0, NULL=27859, NULL=0, NULL=27842, NULL=27846} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L383] int cleanupTimeShifts = 4; [L651] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L848] int waterLevel = 1; [L849] int methaneLevelCritical = 0; [L459] int retValue_acc ; [L460] int tmp ; [L986] int retValue_acc ; [L989] retValue_acc = 1 [L990] return (retValue_acc); [L466] tmp = valid_product() [L468] COND TRUE \read(tmp) [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 Loop: [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L350] systemActive = 1 [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L212] int tmp ; [L215] COND FALSE !(\read(pumpRunning)) [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L309] int retValue_acc ; [L310] int tmp ; [L311] int tmp___0 ; [L928] int retValue_acc ; [L931] COND TRUE waterLevel < 2 [L932] retValue_acc = 1 [L933] return (retValue_acc); [L315] tmp = isHighWaterSensorDry() [L317] COND TRUE \read(tmp) [L318] tmp___0 = 0 [L322] retValue_acc = tmp___0 [L323] return (retValue_acc); [L165] tmp = isHighWaterLevel() [L167] COND FALSE !(\read(tmp)) [L358] int tmp ; [L359] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = waterLevel [L923] return (retValue_acc); [L363] tmp = getWaterLevel() [L365] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:20:46,678 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...