./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product51.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_product51.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 c5548a4f9ab372783c382dbed65951e6f378a572 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:25:33,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:33,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:33,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:33,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:33,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:33,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:33,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:33,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:33,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:33,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:33,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:33,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:33,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:33,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:33,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:33,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:33,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:33,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:33,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:33,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:33,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:33,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:33,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:33,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:33,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:33,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:33,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:33,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:33,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:33,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:33,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:33,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:33,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:33,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:33,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:33,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:33,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:33,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:33,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:33,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:33,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:33,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:33,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:33,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:33,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:33,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:33,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:33,341 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:33,341 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:33,341 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:33,341 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:33,342 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:33,342 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:33,343 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:33,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:33,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:33,343 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:33,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:33,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:33,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:33,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:33,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:33,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:33,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:33,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:33,345 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:33,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:33,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:33,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:33,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:33,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:33,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:33,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:33,348 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:33,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5548a4f9ab372783c382dbed65951e6f378a572 [2021-08-27 16:25:33,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:25:33,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:25:33,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:25:33,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:25:33,643 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:25:33,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c [2021-08-27 16:25:33,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2edeca49/150656ba4f774e26a7f26de5b745b934/FLAGb7b83cb9c [2021-08-27 16:25:34,188 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:25:34,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product51.cil.c [2021-08-27 16:25:34,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2edeca49/150656ba4f774e26a7f26de5b745b934/FLAGb7b83cb9c [2021-08-27 16:25:34,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2edeca49/150656ba4f774e26a7f26de5b745b934 [2021-08-27 16:25:34,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:25:34,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:25:34,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:34,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:25:34,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:25:34,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:34" (1/1) ... [2021-08-27 16:25:34,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d61e328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:34, skipping insertion in model container [2021-08-27 16:25:34,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:34" (1/1) ... [2021-08-27 16:25:34,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:25:34,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:25:35,056 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_product51.cil.c[18161,18174] [2021-08-27 16:25:35,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:35,072 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:25:35,141 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_product51.cil.c[18161,18174] [2021-08-27 16:25:35,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:35,158 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:25:35,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35 WrapperNode [2021-08-27 16:25:35,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:35,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:35,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:25:35,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:25:35,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:35,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:25:35,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:25:35,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:25:35,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:25:35,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:25:35,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:25:35,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:25:35,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (1/1) ... [2021-08-27 16:25:35,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:25:35,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:25:35,293 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 16:25:35,319 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 16:25:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:25:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:25:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:25:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:25:36,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:25:36,139 INFO L299 CfgBuilder]: Removed 174 assume(true) statements. [2021-08-27 16:25:36,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:36 BoogieIcfgContainer [2021-08-27 16:25:36,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:25:36,143 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:25:36,143 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:25:36,147 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:25:36,147 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:36,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:25:34" (1/3) ... [2021-08-27 16:25:36,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f3152e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:36, skipping insertion in model container [2021-08-27 16:25:36,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:36,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:35" (2/3) ... [2021-08-27 16:25:36,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f3152e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:36, skipping insertion in model container [2021-08-27 16:25:36,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:36,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:36" (3/3) ... [2021-08-27 16:25:36,151 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2021-08-27 16:25:36,195 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:25:36,195 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:25:36,195 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:25:36,195 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:25:36,195 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:25:36,196 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:25:36,196 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:25:36,196 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:25:36,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 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 16:25:36,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:25:36,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:36,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:36,246 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:36,246 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:36,246 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:25:36,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 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 16:25:36,253 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:25:36,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:36,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:36,254 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:36,254 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:36,263 INFO L791 eck$LassoCheckResult]: Stem: 115#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.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;~switchedOnBeforeTS~0 := 0; 42#L-1true havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 43#L463true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 25#L471true main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 18#L360true assume 0 != main_~tmp~4; 12#L331true ~switchedOnBeforeTS~0 := 0; 32#L961true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 79#L982-1true [2021-08-27 16:25:36,263 INFO L793 eck$LassoCheckResult]: Loop: 79#L982-1true assume !false; 14#L385true assume test_~splverifierCounter~0 < 4; 80#L386true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 15#L394true assume !(0 != test_~tmp~5); 54#L394-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 113#L404true assume !(0 != test_~tmp___0~2); 109#L404-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 120#L414true assume 0 != test_~tmp___2~0; 53#L420-1true havoc __utac_acc__Specification5_spec__2_#t~ret79;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; 49#L176true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 77#L971true assume !(0 != ~pumpRunning~0); 127#L65true assume !(0 != ~systemActive~0); 66#L72true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 16#L918true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 6#L982true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 79#L982-1true [2021-08-27 16:25:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:25:36,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:36,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415563660] [2021-08-27 16:25:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:36,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:36,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:36,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:36,609 INFO L82 PathProgramCache]: Analyzing trace with hash -240044843, now seen corresponding path program 1 times [2021-08-27 16:25:36,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:36,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544310728] [2021-08-27 16:25:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:36,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:36,620 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:36,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1693980367, now seen corresponding path program 1 times [2021-08-27 16:25:36,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:36,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973817551] [2021-08-27 16:25:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:36,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:36,752 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 16:25:36,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973817551] [2021-08-27 16:25:36,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973817551] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:36,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:36,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:25:36,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220842548] [2021-08-27 16:25:36,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:25:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:25:36,914 INFO L87 Difference]: Start difference. First operand has 125 states, 124 states have (on average 1.5241935483870968) internal successors, (189), 124 states have internal predecessors, (189), 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 16:25:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:37,130 INFO L93 Difference]: Finished difference Result 301 states and 430 transitions. [2021-08-27 16:25:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:25:37,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 430 transitions. [2021-08-27 16:25:37,137 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 195 [2021-08-27 16:25:37,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 280 states and 409 transitions. [2021-08-27 16:25:37,144 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 280 [2021-08-27 16:25:37,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 280 [2021-08-27 16:25:37,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 409 transitions. [2021-08-27 16:25:37,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:37,147 INFO L681 BuchiCegarLoop]: Abstraction has 280 states and 409 transitions. [2021-08-27 16:25:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 409 transitions. [2021-08-27 16:25:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 167. [2021-08-27 16:25:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.4491017964071857) internal successors, (242), 166 states have internal predecessors, (242), 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 16:25:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 242 transitions. [2021-08-27 16:25:37,179 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 242 transitions. [2021-08-27 16:25:37,179 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 242 transitions. [2021-08-27 16:25:37,179 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:25:37,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 242 transitions. [2021-08-27 16:25:37,181 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 116 [2021-08-27 16:25:37,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:37,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:37,182 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:37,182 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:37,182 INFO L791 eck$LassoCheckResult]: Stem: 562#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.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;~switchedOnBeforeTS~0 := 0; 506#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 507#L463 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 486#L471 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 473#L360 assume 0 != main_~tmp~4; 460#L331 ~switchedOnBeforeTS~0 := 0; 461#L961 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 450#L982-1 [2021-08-27 16:25:37,182 INFO L793 eck$LassoCheckResult]: Loop: 450#L982-1 assume !false; 464#L385 assume test_~splverifierCounter~0 < 4; 465#L386 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 467#L394 assume !(0 != test_~tmp~5); 469#L394-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 520#L404 assume !(0 != test_~tmp___0~2); 509#L404-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 560#L414 assume 0 != test_~tmp___2~0; 503#L420-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;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; 515#L176 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 516#L971 assume !(0 != ~pumpRunning~0); 539#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 482#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 484#L97-1 assume !(0 == ~pumpRunning~0); 477#L72 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 470#L918 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 448#L982 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 450#L982-1 [2021-08-27 16:25:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:25:37,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739365853] [2021-08-27 16:25:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,220 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1395551213, now seen corresponding path program 1 times [2021-08-27 16:25:37,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942274780] [2021-08-27 16:25:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:37,309 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 16:25:37,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:37,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942274780] [2021-08-27 16:25:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942274780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:37,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:37,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983822031] [2021-08-27 16:25:37,316 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:37,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:37,318 INFO L87 Difference]: Start difference. First operand 167 states and 242 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 16:25:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:37,407 INFO L93 Difference]: Finished difference Result 214 states and 293 transitions. [2021-08-27 16:25:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:37,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 293 transitions. [2021-08-27 16:25:37,411 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:25:37,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 214 states and 293 transitions. [2021-08-27 16:25:37,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 214 [2021-08-27 16:25:37,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 214 [2021-08-27 16:25:37,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 214 states and 293 transitions. [2021-08-27 16:25:37,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:37,419 INFO L681 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-08-27 16:25:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states and 293 transitions. [2021-08-27 16:25:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-08-27 16:25:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.3691588785046729) internal successors, (293), 213 states have internal predecessors, (293), 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 16:25:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 293 transitions. [2021-08-27 16:25:37,435 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-08-27 16:25:37,435 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 293 transitions. [2021-08-27 16:25:37,436 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:25:37,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 293 transitions. [2021-08-27 16:25:37,445 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:25:37,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:37,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:37,447 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:37,447 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, 1] [2021-08-27 16:25:37,448 INFO L791 eck$LassoCheckResult]: Stem: 964#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.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;~switchedOnBeforeTS~0 := 0; 896#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 897#L463 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 875#L471 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 862#L360 assume 0 != main_~tmp~4; 849#L331 ~switchedOnBeforeTS~0 := 0; 850#L961 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 884#L982-1 [2021-08-27 16:25:37,448 INFO L793 eck$LassoCheckResult]: Loop: 884#L982-1 assume !false; 935#L385 assume test_~splverifierCounter~0 < 4; 1016#L386 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1030#L394 assume !(0 != test_~tmp~5); 1028#L394-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1027#L404 assume !(0 != test_~tmp___0~2); 1025#L404-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 965#L414 assume 0 != test_~tmp___2~0; 892#L420-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;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; 904#L176 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 905#L971 assume !(0 != ~pumpRunning~0); 934#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 872#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 873#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 938#L926-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 963#L931-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 947#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 948#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 906#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 865#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 867#L72 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 924#L918 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1019#L982 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 884#L982-1 [2021-08-27 16:25:37,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:25:37,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470269363] [2021-08-27 16:25:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,476 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:37,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1667768609, now seen corresponding path program 1 times [2021-08-27 16:25:37,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431758620] [2021-08-27 16:25:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:37,574 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 16:25:37,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:37,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431758620] [2021-08-27 16:25:37,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431758620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:37,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:37,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:25:37,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081771744] [2021-08-27 16:25:37,575 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:37,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:37,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:25:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:25:37,577 INFO L87 Difference]: Start difference. First operand 214 states and 293 transitions. cyclomatic complexity: 82 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 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 16:25:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:37,770 INFO L93 Difference]: Finished difference Result 853 states and 1177 transitions. [2021-08-27 16:25:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:25:37,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 853 states and 1177 transitions. [2021-08-27 16:25:37,776 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 599 [2021-08-27 16:25:37,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 853 states to 853 states and 1177 transitions. [2021-08-27 16:25:37,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 853 [2021-08-27 16:25:37,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 853 [2021-08-27 16:25:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 853 states and 1177 transitions. [2021-08-27 16:25:37,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:37,784 INFO L681 BuchiCegarLoop]: Abstraction has 853 states and 1177 transitions. [2021-08-27 16:25:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states and 1177 transitions. [2021-08-27 16:25:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 418. [2021-08-27 16:25:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 418 states have (on average 1.3492822966507176) internal successors, (564), 417 states have internal predecessors, (564), 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 16:25:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 564 transitions. [2021-08-27 16:25:37,802 INFO L704 BuchiCegarLoop]: Abstraction has 418 states and 564 transitions. [2021-08-27 16:25:37,802 INFO L587 BuchiCegarLoop]: Abstraction has 418 states and 564 transitions. [2021-08-27 16:25:37,802 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:25:37,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 418 states and 564 transitions. [2021-08-27 16:25:37,804 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 302 [2021-08-27 16:25:37,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:37,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:37,806 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:37,806 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, 1, 1, 1] [2021-08-27 16:25:37,806 INFO L791 eck$LassoCheckResult]: Stem: 2070#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.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;~switchedOnBeforeTS~0 := 0; 1983#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~4, main_~tmp~4;havoc main_~retValue_acc~4;havoc main_~tmp~4; 1984#L463 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1963#L471 main_#t~ret28 := valid_product_#res;main_~tmp~4 := main_#t~ret28;havoc main_#t~ret28; 1949#L360 assume 0 != main_~tmp~4; 1935#L331 ~switchedOnBeforeTS~0 := 0; 1936#L961 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1972#L982-1 [2021-08-27 16:25:37,806 INFO L793 eck$LassoCheckResult]: Loop: 1972#L982-1 assume !false; 2240#L385 assume test_~splverifierCounter~0 < 4; 2241#L386 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 2305#L394 assume !(0 != test_~tmp~5); 2302#L394-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 2301#L404 assume !(0 != test_~tmp___0~2); 2299#L404-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2298#L414 assume 0 != test_~tmp___2~0; 2297#L420-1 havoc __utac_acc__Specification5_spec__2_#t~ret79;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; 2318#L176 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 2315#L971 assume !(0 != ~pumpRunning~0); 2079#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1960#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1961#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 2034#L926-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 2069#L931-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 2045#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 2046#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1994#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1953#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1955#L72 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 2248#L918 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 2249#L982 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;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; 2270#L176-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 2243#L986 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1972#L982-1 [2021-08-27 16:25:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:25:37,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367563600] [2021-08-27 16:25:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,840 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,876 INFO L82 PathProgramCache]: Analyzing trace with hash -702843718, now seen corresponding path program 1 times [2021-08-27 16:25:37,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482840127] [2021-08-27 16:25:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,881 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash -766269900, now seen corresponding path program 1 times [2021-08-27 16:25:37,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:37,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658821423] [2021-08-27 16:25:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:37,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,908 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:37,948 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:17,756 WARN L207 SmtUtils]: Spent 39.52 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:26:59,063 WARN L207 SmtUtils]: Spent 20.40 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:26:59,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:26:59 BoogieIcfgContainer [2021-08-27 16:26:59,178 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:26:59,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:26:59,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:26:59,186 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:26:59,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:36" (3/4) ... [2021-08-27 16:26:59,189 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:26:59,234 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:26:59,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:26:59,235 INFO L168 Benchmark]: Toolchain (without parser) took 84520.75 ms. Allocated memory was 62.9 MB in the beginning and 117.4 MB in the end (delta: 54.5 MB). Free memory was 41.7 MB in the beginning and 58.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,235 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:26:59,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.97 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 37.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,236 INFO L168 Benchmark]: Boogie Preprocessor took 50.80 ms. Allocated memory is still 62.9 MB. Free memory was 34.2 MB in the beginning and 31.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,237 INFO L168 Benchmark]: RCFGBuilder took 872.25 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 31.5 MB in the beginning and 40.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,237 INFO L168 Benchmark]: BuchiAutomizer took 83035.03 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 40.8 MB in the beginning and 60.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,238 INFO L168 Benchmark]: Witness Printer took 56.07 ms. Allocated memory is still 117.4 MB. Free memory was 60.7 MB in the beginning and 58.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:59,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 443.97 ms. Allocated memory is still 62.9 MB. Free memory was 41.5 MB in the beginning and 37.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.80 ms. Allocated memory is still 62.9 MB. Free memory was 34.2 MB in the beginning and 31.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 872.25 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 31.5 MB in the beginning and 40.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83035.03 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 40.8 MB in the beginning and 60.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * Witness Printer took 56.07 ms. Allocated memory is still 117.4 MB. Free memory was 60.7 MB in the beginning and 58.6 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 418 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 82.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 82.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 54.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 548 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 418 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 626 SDtfs, 1737 SDslu, 1609 SDs, 0 SdLazy, 225 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 312.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 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: 384]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=27693} State at position 1 is {retValue_acc=1, NULL=0, NULL=0, NULL=45148, NULL=0, NULL=27693, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57a353ff=0, NULL=45146, NULL=45140, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=45150, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@376f275=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5adef13a=0, cleanupTimeShifts=4, NULL=45145, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c45477e=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@814e4cf=0, head=0, pumpRunning=0, NULL=45137, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57ace165=0, NULL=45131, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50174b50=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70bfc921=50, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15b999e6=0, NULL=0, NULL=45142, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7217af7c=0, NULL=0, tmp___0=0, NULL=45126, tmp=0, head=0, NULL=45138, NULL=45147, NULL=45136, NULL=0, retValue_acc=0, NULL=0, NULL=45143, NULL=45133, NULL=27695, tmp=1, tmp___0=0, NULL=0, NULL=45135, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43674511=0, switchedOnBeforeTS=0, NULL=45128, \result=0, NULL=45129, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=45149, \result=0, NULL=45127, tmp___0=0, NULL=45144, NULL=0, NULL=45130, NULL=0, NULL=0, retValue_acc=1, NULL=45134, retValue_acc=1, tmp___2=50, splverifierCounter=0, NULL=0, NULL=27694, NULL=45132, retValue_acc=0, NULL=45141, NULL=0, NULL=0, NULL=45139, NULL=45125} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L270] int cleanupTimeShifts = 4; [L645] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L955] int switchedOnBeforeTS ; [L351] int retValue_acc ; [L352] int tmp ; [L467] int retValue_acc ; [L470] retValue_acc = 1 [L471] return (retValue_acc); [L358] tmp = valid_product() [L360] COND TRUE \read(tmp) [L960] switchedOnBeforeTS = 0 [L375] int splverifierCounter ; [L376] int tmp ; [L377] int tmp___0 ; [L378] int tmp___1 ; [L379] int tmp___2 ; [L382] splverifierCounter = 0 Loop: [L384] COND TRUE 1 [L386] COND TRUE splverifierCounter < 4 [L392] tmp = __VERIFIER_nondet_int() [L394] COND FALSE !(\read(tmp)) [L402] tmp___0 = __VERIFIER_nondet_int() [L404] COND FALSE !(\read(tmp___0)) [L412] tmp___2 = __VERIFIER_nondet_int() [L414] COND TRUE \read(tmp___2) [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L969] switchedOnBeforeTS = isPumpRunning() [L65] COND FALSE !(\read(pumpRunning)) [L72] COND TRUE \read(systemActive) [L120] int tmp ; [L123] COND FALSE !(\read(pumpRunning)) [L94] int tmp ; [L97] COND TRUE ! pumpRunning [L217] int retValue_acc ; [L218] int tmp ; [L219] int tmp___0 ; [L923] int retValue_acc ; [L926] COND TRUE waterLevel < 2 [L927] retValue_acc = 1 [L928] return (retValue_acc); [L223] tmp = isHighWaterSensorDry() [L225] COND TRUE \read(tmp) [L226] tmp___0 = 0 [L230] retValue_acc = tmp___0 [L231] return (retValue_acc); [L99] tmp = isHighWaterLevel() [L101] COND FALSE !(\read(tmp)) [L975] int tmp ; [L976] int tmp___0 ; [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L980] tmp = getWaterLevel() [L982] COND TRUE tmp != 2 [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L984] tmp___0 = isPumpRunning() [L986] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:26:59,291 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...