./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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_spec3_product49.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 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:38:44,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:38:44,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:38:44,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:38:44,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:38:44,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:38:44,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:38:44,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:38:44,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:38:44,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:38:44,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:38:44,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:38:44,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:38:44,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:38:44,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:38:44,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:38:44,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:38:44,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:38:44,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:38:44,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:38:44,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:38:44,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:38:44,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:38:44,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:38:44,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:38:44,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:38:44,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:38:44,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:38:44,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:38:44,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:38:44,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:38:44,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:38:44,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:38:44,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:38:44,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:38:44,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:38:44,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:38:44,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:38:44,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:38:44,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:38:44,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:38:44,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:38:44,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:38:44,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:38:44,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:38:44,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:38:44,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:38:44,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:38:44,487 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:38:44,488 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:38:44,488 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:38:44,488 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:38:44,489 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:38:44,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:38:44,489 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:38:44,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:38:44,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:38:44,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:38:44,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:38:44,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:38:44,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:38:44,492 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:38:44,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:38:44,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:38:44,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:38:44,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:38:44,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:38:44,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:38:44,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:38:44,495 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:38:44,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 837951bb35a66379a80a07f15314d2b43ee3f47728002b8b604897c09f36abe4 [2021-12-14 23:38:44,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:38:44,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:38:44,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:38:44,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:38:44,791 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:38:44,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-12-14 23:38:44,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09df4c884/0de1237ea927459faf088033ef969e5f/FLAGddca0fbfd [2021-12-14 23:38:45,252 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:38:45,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product49.cil.c [2021-12-14 23:38:45,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09df4c884/0de1237ea927459faf088033ef969e5f/FLAGddca0fbfd [2021-12-14 23:38:45,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09df4c884/0de1237ea927459faf088033ef969e5f [2021-12-14 23:38:45,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:38:45,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:38:45,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:38:45,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:38:45,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:38:45,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:45" (1/1) ... [2021-12-14 23:38:45,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536e5770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:45, skipping insertion in model container [2021-12-14 23:38:45,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:45" (1/1) ... [2021-12-14 23:38:45,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:38:45,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:38:45,922 WARN L230 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_spec3_product49.cil.c[18588,18601] [2021-12-14 23:38:45,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:38:45,930 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:38:46,008 WARN L230 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_spec3_product49.cil.c[18588,18601] [2021-12-14 23:38:46,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:38:46,027 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:38:46,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46 WrapperNode [2021-12-14 23:38:46,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:38:46,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:38:46,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:38:46,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:38:46,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,087 INFO L137 Inliner]: procedures = 55, calls = 155, calls flagged for inlining = 52, calls inlined = 80, statements flattened = 632 [2021-12-14 23:38:46,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:38:46,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:38:46,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:38:46,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:38:46,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:38:46,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:38:46,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:38:46,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:38:46,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:38:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:38:46,175 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) [2021-12-14 23:38:46,177 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 [2021-12-14 23:38:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:38:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:38:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:38:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:38:46,290 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:38:46,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:38:46,663 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:38:46,674 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:38:46,679 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:38:46,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46 BoogieIcfgContainer [2021-12-14 23:38:46,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:38:46,683 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:38:46,683 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:38:46,686 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:38:46,687 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,687 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:38:45" (1/3) ... [2021-12-14 23:38:46,688 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ac19da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:38:46, skipping insertion in model container [2021-12-14 23:38:46,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (2/3) ... [2021-12-14 23:38:46,689 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ac19da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:38:46, skipping insertion in model container [2021-12-14 23:38:46,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46" (3/3) ... [2021-12-14 23:38:46,690 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product49.cil.c [2021-12-14 23:38:46,737 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:38:46,737 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:38:46,737 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:38:46,738 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:38:46,738 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:38:46,738 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:38:46,738 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:38:46,738 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:38:46,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 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) [2021-12-14 23:38:46,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 108 [2021-12-14 23:38:46,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:46,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:46,780 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,780 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:38:46,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 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) [2021-12-14 23:38:46,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 108 [2021-12-14 23:38:46,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:46,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:46,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,789 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,794 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 47#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 20#L490true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 137#L483true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 114#L498true main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 42#L951true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 82#L928true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 105#L271-2true [2021-12-14 23:38:46,794 INFO L793 eck$LassoCheckResult]: Loop: 105#L271-2true assume !false; 55#L272true assume test_~splverifierCounter~0#1 < 4; 77#L273true test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 14#L281true assume !(0 != test_~tmp~4#1); 98#L281-2true test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 101#L291true assume !(0 != test_~tmp___0~2#1); 99#L291-2true test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 118#L301true assume 0 != test_~tmp___2~0#1; 16#L307-2true assume { :begin_inline_timeShift } true; 163#L68true assume !(0 != ~pumpRunning~0); 91#L68-2true assume !(0 != ~systemActive~0); 37#L75-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 107#L405true __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 94#L337true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 57#L343-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 43#L85true assume { :end_inline_timeShift } true; 105#L271-2true [2021-12-14 23:38:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-14 23:38:46,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788633256] [2021-12-14 23:38:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:46,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,012 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1182775606, now seen corresponding path program 1 times [2021-12-14 23:38:47,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961112075] [2021-12-14 23:38:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1756772614, now seen corresponding path program 1 times [2021-12-14 23:38:47,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043249067] [2021-12-14 23:38:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043249067] [2021-12-14 23:38:47,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043249067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:38:47,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965726652] [2021-12-14 23:38:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:47,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:38:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:38:47,353 INFO L87 Difference]: Start difference. First operand has 168 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 167 states have internal predecessors, (231), 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 3.8333333333333335) 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) [2021-12-14 23:38:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:47,441 INFO L93 Difference]: Finished difference Result 165 states and 217 transitions. [2021-12-14 23:38:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:38:47,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 217 transitions. [2021-12-14 23:38:47,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 104 [2021-12-14 23:38:47,456 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 155 states and 207 transitions. [2021-12-14 23:38:47,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-12-14 23:38:47,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-12-14 23:38:47,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 207 transitions. [2021-12-14 23:38:47,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:47,460 INFO L681 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-14 23:38:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states and 207 transitions. [2021-12-14 23:38:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 23:38:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 155 states have (on average 1.335483870967742) internal successors, (207), 154 states have internal predecessors, (207), 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) [2021-12-14 23:38:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-12-14 23:38:47,486 INFO L704 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-14 23:38:47,486 INFO L587 BuchiCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-14 23:38:47,486 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:38:47,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155 states and 207 transitions. [2021-12-14 23:38:47,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 104 [2021-12-14 23:38:47,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:47,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:47,489 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,489 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,490 INFO L791 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 423#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 383#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 384#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 490#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 413#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 414#L928 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 416#L271-2 [2021-12-14 23:38:47,490 INFO L793 eck$LassoCheckResult]: Loop: 416#L271-2 assume !false; 434#L272 assume test_~splverifierCounter~0#1 < 4; 435#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 371#L281 assume !(0 != test_~tmp~4#1); 373#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 478#L291 assume !(0 != test_~tmp___0~2#1); 375#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 479#L301 assume 0 != test_~tmp___2~0#1; 376#L307-2 assume { :begin_inline_timeShift } true; 377#L68 assume !(0 != ~pumpRunning~0); 471#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 466#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 467#L100-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 427#L92-3 assume { :end_inline_processEnvironment__wrappee__base } true; 428#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 443#L126-1 assume { :end_inline_processEnvironment } true; 405#L75-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 406#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 474#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 437#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 415#L85 assume { :end_inline_timeShift } true; 416#L271-2 [2021-12-14 23:38:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-14 23:38:47,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190430342] [2021-12-14 23:38:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,508 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,526 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1675901973, now seen corresponding path program 1 times [2021-12-14 23:38:47,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629811037] [2021-12-14 23:38:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629811037] [2021-12-14 23:38:47,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629811037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:38:47,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629954711] [2021-12-14 23:38:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:47,557 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:38:47,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:38:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:38:47,558 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:47,653 INFO L93 Difference]: Finished difference Result 216 states and 278 transitions. [2021-12-14 23:38:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:38:47,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 216 states and 278 transitions. [2021-12-14 23:38:47,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 150 [2021-12-14 23:38:47,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 216 states to 216 states and 278 transitions. [2021-12-14 23:38:47,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 216 [2021-12-14 23:38:47,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 216 [2021-12-14 23:38:47,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 216 states and 278 transitions. [2021-12-14 23:38:47,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:47,670 INFO L681 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-14 23:38:47,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states and 278 transitions. [2021-12-14 23:38:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-14 23:38:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 216 states have (on average 1.287037037037037) internal successors, (278), 215 states have internal predecessors, (278), 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) [2021-12-14 23:38:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 278 transitions. [2021-12-14 23:38:47,684 INFO L704 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-14 23:38:47,684 INFO L587 BuchiCegarLoop]: Abstraction has 216 states and 278 transitions. [2021-12-14 23:38:47,684 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:38:47,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 216 states and 278 transitions. [2021-12-14 23:38:47,686 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 150 [2021-12-14 23:38:47,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:47,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:47,686 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,687 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, 1, 1] [2021-12-14 23:38:47,687 INFO L791 eck$LassoCheckResult]: Stem: 889#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 798#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 757#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 758#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 868#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 789#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 790#L928 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 840#L271-2 [2021-12-14 23:38:47,687 INFO L793 eck$LassoCheckResult]: Loop: 840#L271-2 assume !false; 907#L272 assume test_~splverifierCounter~0#1 < 4; 906#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 904#L281 assume !(0 != test_~tmp~4#1); 902#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 900#L291 assume !(0 != test_~tmp___0~2#1); 898#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 897#L301 assume 0 != test_~tmp___2~0#1; 895#L307-2 assume { :begin_inline_timeShift } true; 891#L68 assume !(0 != ~pumpRunning~0); 847#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 842#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 843#L100-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 803#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 804#L450-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 811#L228-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 878#L228-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 890#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 834#L104-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 836#L92-2 assume { :end_inline_processEnvironment__wrappee__base } true; 837#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 871#L126-1 assume { :end_inline_processEnvironment } true; 916#L75-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 915#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 911#L337 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5#1; 909#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 908#L85 assume { :end_inline_timeShift } true; 840#L271-2 [2021-12-14 23:38:47,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-14 23:38:47,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677097981] [2021-12-14 23:38:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,715 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,737 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2016867469, now seen corresponding path program 1 times [2021-12-14 23:38:47,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946408417] [2021-12-14 23:38:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,753 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,768 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1902812087, now seen corresponding path program 1 times [2021-12-14 23:38:47,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893987808] [2021-12-14 23:38:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893987808] [2021-12-14 23:38:47,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893987808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 23:38:47,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091867941] [2021-12-14 23:38:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:48,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:38:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:38:48,051 INFO L87 Difference]: Start difference. First operand 216 states and 278 transitions. cyclomatic complexity: 64 Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-12-14 23:38:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:48,146 INFO L93 Difference]: Finished difference Result 777 states and 998 transitions. [2021-12-14 23:38:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 23:38:48,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 777 states and 998 transitions. [2021-12-14 23:38:48,153 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 577 [2021-12-14 23:38:48,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 777 states to 777 states and 998 transitions. [2021-12-14 23:38:48,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 777 [2021-12-14 23:38:48,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 777 [2021-12-14 23:38:48,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 777 states and 998 transitions. [2021-12-14 23:38:48,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:48,160 INFO L681 BuchiCegarLoop]: Abstraction has 777 states and 998 transitions. [2021-12-14 23:38:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states and 998 transitions. [2021-12-14 23:38:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 425. [2021-12-14 23:38:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 425 states have (on average 1.2729411764705882) internal successors, (541), 424 states have internal predecessors, (541), 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) [2021-12-14 23:38:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 541 transitions. [2021-12-14 23:38:48,173 INFO L704 BuchiCegarLoop]: Abstraction has 425 states and 541 transitions. [2021-12-14 23:38:48,174 INFO L587 BuchiCegarLoop]: Abstraction has 425 states and 541 transitions. [2021-12-14 23:38:48,174 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:38:48,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 541 transitions. [2021-12-14 23:38:48,176 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 300 [2021-12-14 23:38:48,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:48,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:48,177 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:48,177 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, 1, 1, 1, 1] [2021-12-14 23:38:48,177 INFO L791 eck$LassoCheckResult]: Stem: 1927#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1812#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~9#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 1769#L490 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1770#L483 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 1891#L498 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 1803#L951 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 1804#L928 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1806#L271-2 [2021-12-14 23:38:48,178 INFO L793 eck$LassoCheckResult]: Loop: 1806#L271-2 assume !false; 1822#L272 assume test_~splverifierCounter~0#1 < 4; 1823#L273 test_~tmp~4#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1758#L281 assume !(0 != test_~tmp~4#1); 1760#L281-2 test_~tmp___0~2#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1877#L291 assume !(0 != test_~tmp___0~2#1); 1762#L291-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1878#L301 assume 0 != test_~tmp___2~0#1; 2130#L307-2 assume { :begin_inline_timeShift } true; 2128#L68 assume !(0 != ~pumpRunning~0); 2126#L68-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1861#L126 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 1862#L100-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret15#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1817#L445-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1818#L450-1 isHighWaterLevel_#t~ret15#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret15#1;havoc isHighWaterLevel_#t~ret15#1; 1909#L228-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1910#L228-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1930#L234-1 processEnvironment__wrappee__highWaterSensor_#t~ret4#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret4#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4#1; 1853#L104-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1855#L92-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1856#L100-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2108#L126-1 assume { :end_inline_processEnvironment } true; 1968#L75-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~5#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~5#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 1969#L405 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~5#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1965#L337 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 1963#L437 __utac_acc__Specification3_spec__1_#t~ret22#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~3#1 := __utac_acc__Specification3_spec__1_#t~ret22#1;havoc __utac_acc__Specification3_spec__1_#t~ret22#1; 1964#L343 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3#1); 2149#L343-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1805#L85 assume { :end_inline_timeShift } true; 1806#L271-2 [2021-12-14 23:38:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-14 23:38:48,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:48,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236764115] [2021-12-14 23:38:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:48,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,193 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1180640704, now seen corresponding path program 1 times [2021-12-14 23:38:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:48,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666801971] [2021-12-14 23:38:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:48,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,200 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1054905980, now seen corresponding path program 1 times [2021-12-14 23:38:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:48,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331232386] [2021-12-14 23:38:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:48,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,215 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:51,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:38:51 BoogieIcfgContainer [2021-12-14 23:38:51,008 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:38:51,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:38:51,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:38:51,008 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:38:51,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46" (3/4) ... [2021-12-14 23:38:51,011 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:38:51,056 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:38:51,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:38:51,056 INFO L158 Benchmark]: Toolchain (without parser) took 5405.87ms. Allocated memory was 94.4MB in the beginning and 159.4MB in the end (delta: 65.0MB). Free memory was 57.1MB in the beginning and 99.1MB in the end (delta: -42.0MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,057 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 94.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:38:51,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.50ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.9MB in the beginning and 87.2MB in the end (delta: -30.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.13ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,058 INFO L158 Benchmark]: Boogie Preprocessor took 59.28ms. Allocated memory is still 115.3MB. Free memory was 83.7MB in the beginning and 81.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,058 INFO L158 Benchmark]: RCFGBuilder took 533.58ms. Allocated memory is still 115.3MB. Free memory was 81.0MB in the beginning and 59.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,059 INFO L158 Benchmark]: BuchiAutomizer took 4324.47ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 59.0MB in the beginning and 102.1MB in the end (delta: -43.1MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,059 INFO L158 Benchmark]: Witness Printer took 47.64ms. Allocated memory is still 159.4MB. Free memory was 102.1MB in the beginning and 99.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:51,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 94.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.50ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.9MB in the beginning and 87.2MB in the end (delta: -30.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.13ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.28ms. Allocated memory is still 115.3MB. Free memory was 83.7MB in the beginning and 81.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.58ms. Allocated memory is still 115.3MB. Free memory was 81.0MB in the beginning and 59.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 4324.47ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 59.0MB in the beginning and 102.1MB in the end (delta: -43.1MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. * Witness Printer took 47.64ms. Allocated memory is still 159.4MB. Free memory was 102.1MB in the beginning and 99.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 425 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.1s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 352 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 425 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1779 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1779 mSDsluCounter, 1897 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1156 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 741 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 271]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@196d878d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5587e94e=0, tmp___0=0, NULL=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, NULL=1, methaneLevelCritical=0, retValue_acc=1, tmp=1, retValue_acc=1, \result=0, retValue_acc=0, tmp=0, \result=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a57e073=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6383cfe9=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@462a34d5=0, tmp___0=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37170794=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@642aef7c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@280d4777=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c07edd5=0, tmp___2=29, tmp___1=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75cbac75=0, cleanupTimeShifts=4, \result=0, tmp=0, head=0, \result=1, tmp___1=0, retValue_acc=1, NULL=0, waterLevel=1, systemActive=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@520acb51=0, tmp=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 271]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L362] int waterLevel = 1; [L363] int methaneLevelCritical = 0; [L672] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L869] int cleanupTimeShifts = 4; [L942] int retValue_acc ; [L943] int tmp ; [L947] FCALL select_helpers() [L948] FCALL select_features() [L949] CALL, EXPR valid_product() [L494] int retValue_acc ; [L497] retValue_acc = 1 [L498] return (retValue_acc); [L949] RET, EXPR valid_product() [L949] tmp = valid_product() [L951] COND TRUE \read(tmp) [L953] FCALL setup() [L954] CALL runTest() [L936] CALL test() [L262] int splverifierCounter ; [L263] int tmp ; [L264] int tmp___0 ; [L265] int tmp___1 ; [L266] int tmp___2 ; [L269] splverifierCounter = 0 Loop: [L271] COND TRUE 1 [L273] COND TRUE splverifierCounter < 4 [L279] tmp = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp)) [L289] tmp___0 = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp___0)) [L299] tmp___2 = __VERIFIER_nondet_int() [L301] COND TRUE \read(tmp___2) [L314] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L123] int tmp ; [L126] COND FALSE !(\read(pumpRunning)) [L141] CALL processEnvironment__wrappee__highWaterSensor() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L220] int retValue_acc ; [L221] int tmp ; [L222] int tmp___0 ; [L226] CALL, EXPR isHighWaterSensorDry() [L442] int retValue_acc ; [L445] COND TRUE waterLevel < 2 [L446] retValue_acc = 1 [L447] return (retValue_acc); [L226] RET, EXPR isHighWaterSensorDry() [L226] tmp = isHighWaterSensorDry() [L228] COND TRUE \read(tmp) [L229] tmp___0 = 0 [L233] retValue_acc = tmp___0 [L234] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND FALSE !(\read(tmp)) [L110] FCALL processEnvironment__wrappee__base() [L141] RET processEnvironment__wrappee__highWaterSensor() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification3_spec__1() [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L335] CALL, EXPR isMethaneLevelCritical() [L401] int retValue_acc ; [L404] retValue_acc = methaneLevelCritical [L405] return (retValue_acc); [L335] RET, EXPR isMethaneLevelCritical() [L335] tmp = isMethaneLevelCritical() [L337] COND FALSE !(\read(tmp)) [L341] CALL, EXPR getWaterLevel() [L433] int retValue_acc ; [L436] retValue_acc = waterLevel [L437] return (retValue_acc); [L341] RET, EXPR getWaterLevel() [L341] tmp___0 = getWaterLevel() [L343] COND FALSE !(tmp___0 == 2) [L83] RET __utac_acc__Specification3_spec__1() [L314] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:38:51,113 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)