./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product05.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_product05.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 0ab5fcec40cf56ec3fd09ff340006d3fee2f3418 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:20:47,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:20:47,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:20:47,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:20:47,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:20:47,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:20:47,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:20:47,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:20:47,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:20:47,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:20:47,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:20:47,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:20:47,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:20:47,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:20:47,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:20:47,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:20:47,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:20:47,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:20:47,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:20:47,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:20:47,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:20:47,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:20:47,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:20:47,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:20:47,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:20:47,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:20:47,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:20:47,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:20:47,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:20:47,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:20:47,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:20:47,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:20:47,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:20:47,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:20:47,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:20:47,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:20:47,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:20:47,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:20:47,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:20:47,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:20:47,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:20:47,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:20:47,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:20:47,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:20:47,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:20:47,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:20:47,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:20:47,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:20:47,327 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:20:47,327 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:20:47,327 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:20:47,328 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:20:47,328 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:20:47,328 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:20:47,328 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:20:47,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:20:47,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:20:47,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:20:47,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:20:47,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:20:47,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:20:47,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:20:47,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:20:47,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:20:47,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:20:47,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:20:47,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:20:47,332 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:20:47,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ab5fcec40cf56ec3fd09ff340006d3fee2f3418 [2021-08-27 16:20:47,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:20:47,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:20:47,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:20:47,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:20:47,591 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:20:47,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product05.cil.c [2021-08-27 16:20:47,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b2eab4/cc729d65885a4023883026835f430e09/FLAGaaa3d680d [2021-08-27 16:20:47,994 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:20:47,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product05.cil.c [2021-08-27 16:20:48,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b2eab4/cc729d65885a4023883026835f430e09/FLAGaaa3d680d [2021-08-27 16:20:48,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0b2eab4/cc729d65885a4023883026835f430e09 [2021-08-27 16:20:48,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:20:48,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:20:48,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:20:48,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:20:48,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:20:48,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dcad494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48, skipping insertion in model container [2021-08-27 16:20:48,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:20:48,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:20:48,584 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_product05.cil.c[14465,14478] [2021-08-27 16:20:48,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:20:48,632 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:20:48,690 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_product05.cil.c[14465,14478] [2021-08-27 16:20:48,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:20:48,707 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:20:48,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48 WrapperNode [2021-08-27 16:20:48,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:20:48,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:20:48,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:20:48,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:20:48,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:20:48,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:20:48,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:20:48,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:20:48,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:20:48,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:20:48,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:20:48,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:20:48,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (1/1) ... [2021-08-27 16:20:48,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:20:48,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:20:48,838 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 16:20:48,860 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 16:20:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:20:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:20:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:20:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:20:49,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:20:49,371 INFO L299 CfgBuilder]: Removed 110 assume(true) statements. [2021-08-27 16:20:49,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:49 BoogieIcfgContainer [2021-08-27 16:20:49,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:20:49,373 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:20:49,373 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:20:49,376 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:20:49,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:49,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:20:48" (1/3) ... [2021-08-27 16:20:49,377 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d257cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:20:49, skipping insertion in model container [2021-08-27 16:20:49,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:49,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:48" (2/3) ... [2021-08-27 16:20:49,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d257cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:20:49, skipping insertion in model container [2021-08-27 16:20:49,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:49,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:49" (3/3) ... [2021-08-27 16:20:49,379 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product05.cil.c [2021-08-27 16:20:49,410 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:20:49,411 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:20:49,411 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:20:49,411 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:20:49,411 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:20:49,411 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:20:49,411 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:20:49,411 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:20:49,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 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 16:20:49,443 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:20:49,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:49,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:49,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:49,449 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:49,449 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:20:49,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 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 16:20:49,460 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:20:49,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:49,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:49,461 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:49,461 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:49,468 INFO L791 eck$LassoCheckResult]: Stem: 59#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);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(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 47#L-1true havoc main_#res;havoc main_#t~ret67, main_~retValue_acc~5, main_~tmp~6;havoc main_~retValue_acc~5;havoc main_~tmp~6; 45#L882true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 57#L890true main_#t~ret67 := valid_product_#res;main_~tmp~6 := main_#t~ret67;havoc main_#t~ret67; 11#L766true assume 0 != main_~tmp~6; 3#L739true ~switchedOnBeforeTS~0 := 0; 42#L51true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 5#L72-1true [2021-08-27 16:20:49,469 INFO L793 eck$LassoCheckResult]: Loop: 5#L72-1true assume !false; 22#L251true assume test_~splverifierCounter~0 < 4; 58#L252true test_~tmp~2 := test_#t~nondet28;havoc test_#t~nondet28; 73#L260true assume !(0 != test_~tmp~2); 18#L260-1true test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 13#L270true assume !(0 != test_~tmp___0~1); 21#L270-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 35#L280true assume 0 != test_~tmp___2~0; 15#L286-2true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 69#L196true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 9#L61true assume !(0 != ~pumpRunning~0); 31#L111true assume !(0 != ~systemActive~0); 33#L118true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 20#L855true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 70#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 5#L72-1true [2021-08-27 16:20:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:49,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:20:49,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:49,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448432481] [2021-08-27 16:20:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:49,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:49,655 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:49,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash 93981420, now seen corresponding path program 1 times [2021-08-27 16:20:49,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:49,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414339311] [2021-08-27 16:20:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:49,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:49,775 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:49,780 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2028006630, now seen corresponding path program 1 times [2021-08-27 16:20:49,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:49,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58977248] [2021-08-27 16:20:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:49,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:20:49,927 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 16:20:49,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:20:49,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58977248] [2021-08-27 16:20:49,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58977248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:20:49,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:20:49,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:20:49,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943113109] [2021-08-27 16:20:50,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:20:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:20:50,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:20:50,081 INFO L87 Difference]: Start difference. First operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 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 16:20:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:20:50,191 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-08-27 16:20:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:20:50,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 100 transitions. [2021-08-27 16:20:50,198 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:20:50,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 68 states and 93 transitions. [2021-08-27 16:20:50,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-08-27 16:20:50,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-08-27 16:20:50,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 93 transitions. [2021-08-27 16:20:50,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:20:50,204 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:20:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 93 transitions. [2021-08-27 16:20:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 16:20:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 67 states have internal predecessors, (93), 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 16:20:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2021-08-27 16:20:50,228 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:20:50,229 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:20:50,229 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:20:50,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 93 transitions. [2021-08-27 16:20:50,231 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:20:50,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:50,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:50,232 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:50,232 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 16:20:50,232 INFO L791 eck$LassoCheckResult]: Stem: 232#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);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(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 223#L-1 havoc main_#res;havoc main_#t~ret67, main_~retValue_acc~5, main_~tmp~6;havoc main_~retValue_acc~5;havoc main_~tmp~6; 221#L882 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 222#L890 main_#t~ret67 := valid_product_#res;main_~tmp~6 := main_#t~ret67;havoc main_#t~ret67; 183#L766 assume 0 != main_~tmp~6; 168#L739 ~switchedOnBeforeTS~0 := 0; 169#L51 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 170#L72-1 [2021-08-27 16:20:50,233 INFO L793 eck$LassoCheckResult]: Loop: 170#L72-1 assume !false; 171#L251 assume test_~splverifierCounter~0 < 4; 200#L252 test_~tmp~2 := test_#t~nondet28;havoc test_#t~nondet28; 231#L260 assume !(0 != test_~tmp~2); 197#L260-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 188#L270 assume !(0 != test_~tmp___0~1); 178#L270-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 199#L280 assume 0 != test_~tmp___2~0; 189#L286-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 190#L196 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 179#L61 assume !(0 != ~pumpRunning~0); 180#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 210#L143 assume !(0 != ~pumpRunning~0); 211#L118 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 195#L855 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 196#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 170#L72-1 [2021-08-27 16:20:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:20:50,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117852504] [2021-08-27 16:20:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,271 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1402071741, now seen corresponding path program 1 times [2021-08-27 16:20:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374402814] [2021-08-27 16:20:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,334 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1576832375, now seen corresponding path program 1 times [2021-08-27 16:20:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109166233] [2021-08-27 16:20:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:20:50,402 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 16:20:50,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:20:50,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109166233] [2021-08-27 16:20:50,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109166233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:20:50,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:20:50,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:20:50,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531494863] [2021-08-27 16:20:50,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:20:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:20:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:20:50,515 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. cyclomatic complexity: 27 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 16:20:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:20:50,600 INFO L93 Difference]: Finished difference Result 182 states and 252 transitions. [2021-08-27 16:20:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:20:50,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 252 transitions. [2021-08-27 16:20:50,602 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-08-27 16:20:50,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 252 transitions. [2021-08-27 16:20:50,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2021-08-27 16:20:50,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2021-08-27 16:20:50,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 252 transitions. [2021-08-27 16:20:50,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:20:50,615 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 252 transitions. [2021-08-27 16:20:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 252 transitions. [2021-08-27 16:20:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 129. [2021-08-27 16:20:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 128 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:20:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 175 transitions. [2021-08-27 16:20:50,629 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 175 transitions. [2021-08-27 16:20:50,629 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 175 transitions. [2021-08-27 16:20:50,629 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:20:50,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 175 transitions. [2021-08-27 16:20:50,631 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 90 [2021-08-27 16:20:50,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:50,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:50,631 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:50,632 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:50,632 INFO L791 eck$LassoCheckResult]: Stem: 503#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);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(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 490#L-1 havoc main_#res;havoc main_#t~ret67, main_~retValue_acc~5, main_~tmp~6;havoc main_~retValue_acc~5;havoc main_~tmp~6; 488#L882 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 489#L890 main_#t~ret67 := valid_product_#res;main_~tmp~6 := main_#t~ret67;havoc main_#t~ret67; 449#L766 assume 0 != main_~tmp~6; 434#L739 ~switchedOnBeforeTS~0 := 0; 435#L51 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 436#L72-1 [2021-08-27 16:20:50,632 INFO L793 eck$LassoCheckResult]: Loop: 436#L72-1 assume !false; 437#L251 assume test_~splverifierCounter~0 < 4; 467#L252 test_~tmp~2 := test_#t~nondet28;havoc test_#t~nondet28; 502#L260 assume !(0 != test_~tmp~2); 461#L260-1 test_~tmp___0~1 := test_#t~nondet29;havoc test_#t~nondet29; 452#L270 assume !(0 != test_~tmp___0~1); 441#L270-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 466#L280 assume 0 != test_~tmp___2~0; 454#L286-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 455#L196 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 445#L61 assume !(0 != ~pumpRunning~0); 446#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 477#L143 assume !(0 != ~pumpRunning~0); 479#L118 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 464#L855 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 465#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 510#L196-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 513#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 436#L72-1 [2021-08-27 16:20:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:20:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422763208] [2021-08-27 16:20:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,675 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,701 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1228773470, now seen corresponding path program 1 times [2021-08-27 16:20:50,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908589718] [2021-08-27 16:20:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,705 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:50,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:50,710 INFO L82 PathProgramCache]: Analyzing trace with hash 787528740, now seen corresponding path program 1 times [2021-08-27 16:20:50,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:50,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311310161] [2021-08-27 16:20:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:50,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,729 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:50,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:29,731 WARN L207 SmtUtils]: Spent 38.81 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:22:09,670 WARN L207 SmtUtils]: Spent 20.03 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:22:09,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:22:09 BoogieIcfgContainer [2021-08-27 16:22:09,765 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:22:09,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:22:09,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:22:09,765 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:22:09,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:49" (3/4) ... [2021-08-27 16:22:09,767 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:22:09,804 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:22:09,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:22:09,805 INFO L168 Benchmark]: Toolchain (without parser) took 81428.13 ms. Allocated memory was 56.6 MB in the beginning and 109.1 MB in the end (delta: 52.4 MB). Free memory was 34.8 MB in the beginning and 59.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,805 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:22:09,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.20 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 49.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 46.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,806 INFO L168 Benchmark]: Boogie Preprocessor took 43.02 ms. Allocated memory is still 71.3 MB. Free memory was 46.7 MB in the beginning and 44.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:22:09,806 INFO L168 Benchmark]: RCFGBuilder took 571.77 ms. Allocated memory is still 71.3 MB. Free memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,806 INFO L168 Benchmark]: BuchiAutomizer took 80391.93 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 47.2 MB in the beginning and 61.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,807 INFO L168 Benchmark]: Witness Printer took 38.78 ms. Allocated memory is still 109.1 MB. Free memory was 61.3 MB in the beginning and 59.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:22:09,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.20 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 49.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.92 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 46.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.02 ms. Allocated memory is still 71.3 MB. Free memory was 46.7 MB in the beginning and 44.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 571.77 ms. Allocated memory is still 71.3 MB. Free memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 80391.93 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 47.2 MB in the beginning and 61.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 67.7 MB. Max. memory is 16.1 GB. * Witness Printer took 38.78 ms. Allocated memory is still 109.1 MB. Free memory was 61.3 MB in the beginning and 59.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 129 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 80.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 80.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 29.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 53 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 129 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 210 SDtfs, 557 SDslu, 270 SDs, 0 SdLazy, 73 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.9ms 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: 250]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=22810} State at position 1 is {NULL=31208, NULL=0, NULL=0, NULL=0, NULL=31194, NULL=0, NULL=22810, NULL=22813, retValue_acc=0, NULL=0, NULL=0, NULL=22811, NULL=31189, NULL=31186, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b808855=0, tmp=0, NULL=0, tmp___1=0, tmp=1, NULL=31204, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10f527cf=0, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=31192, NULL=31199, \result=0, NULL=31188, NULL=22812, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=31193, \result=1, NULL=0, NULL=0, NULL=0, NULL=31197, NULL=0, NULL=0, NULL=31207, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45b532cb=0, \result=1, head=0, pumpRunning=0, \result=0, NULL=31187, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@423f9b63=0, NULL=31196, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@262a43e4=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@785b6b9c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46e17034=54, retValue_acc=1, NULL=31203, NULL=0, NULL=0, NULL=31185, NULL=0, NULL=31209, retValue_acc=1, tmp___2=54, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, NULL=31191, NULL=31206, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b01c7f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@373bd79b=0, NULL=31195, tmp=0, head=0, retValue_acc=0, NULL=31200, NULL=31198, NULL=0, NULL=31190, NULL=31205, NULL=31201, NULL=31202} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L101] int pumpRunning = 0; [L102] int systemActive = 1; [L474] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L680] int cleanupTimeShifts = 4; [L780] int waterLevel = 1; [L781] int methaneLevelCritical = 0; [L757] int retValue_acc ; [L758] int tmp ; [L886] int retValue_acc ; [L889] retValue_acc = 1 [L890] return (retValue_acc); [L764] tmp = valid_product() [L766] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L241] int splverifierCounter ; [L242] int tmp ; [L243] int tmp___0 ; [L244] int tmp___1 ; [L245] int tmp___2 ; [L248] splverifierCounter = 0 Loop: [L250] COND TRUE 1 [L252] COND TRUE splverifierCounter < 4 [L258] tmp = __VERIFIER_nondet_int() [L260] COND FALSE !(\read(tmp)) [L268] tmp___0 = __VERIFIER_nondet_int() [L270] COND FALSE !(\read(tmp___0)) [L278] tmp___2 = __VERIFIER_nondet_int() [L280] COND TRUE \read(tmp___2) [L192] int retValue_acc ; [L195] retValue_acc = pumpRunning [L196] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L111] COND FALSE !(\read(pumpRunning)) [L118] COND TRUE \read(systemActive) [L140] int tmp ; [L143] COND FALSE !(\read(pumpRunning)) [L65] int tmp ; [L66] int tmp___0 ; [L851] int retValue_acc ; [L854] retValue_acc = waterLevel [L855] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L192] int retValue_acc ; [L195] retValue_acc = pumpRunning [L196] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:22:09,851 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...