./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88f09ec5af0f641c9edfe2f7047937341e46c7f8baabeed0fd38f069cd3b5278 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:12:57,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:12:57,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:12:57,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:12:57,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:12:57,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:12:57,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:12:57,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:12:57,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:12:57,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:12:57,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:12:57,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:12:57,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:12:57,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:12:57,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:12:57,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:12:57,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:12:57,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:12:57,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:12:57,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:12:57,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:12:57,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:12:57,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:12:57,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:12:57,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:12:57,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:12:57,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:12:57,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:12:57,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:12:57,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:12:57,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:12:57,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:12:57,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:12:57,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:12:57,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:12:57,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:12:57,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:12:57,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:12:57,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:12:57,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:12:57,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:12:57,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:12:57,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:12:57,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:12:57,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:12:57,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:12:57,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:12:57,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:12:57,690 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:12:57,690 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:12:57,690 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:12:57,690 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:12:57,691 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:12:57,691 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:12:57,691 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:12:57,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:12:57,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:12:57,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:12:57,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:12:57,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:12:57,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:12:57,693 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:12:57,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:12:57,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:12:57,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:12:57,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:12:57,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:12:57,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:12:57,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:12:57,696 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:12:57,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88f09ec5af0f641c9edfe2f7047937341e46c7f8baabeed0fd38f069cd3b5278 [2021-12-19 19:12:57,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:12:57,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:12:57,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:12:57,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:12:57,947 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:12:57,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2021-12-19 19:12:58,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b33acea/33a2f1a82da84e6ebcb7fe4966836889/FLAG25e35944d [2021-12-19 19:12:58,438 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:12:58,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2021-12-19 19:12:58,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b33acea/33a2f1a82da84e6ebcb7fe4966836889/FLAG25e35944d [2021-12-19 19:12:58,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b33acea/33a2f1a82da84e6ebcb7fe4966836889 [2021-12-19 19:12:58,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:12:58,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:12:58,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:12:58,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:12:58,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:12:58,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:12:58" (1/1) ... [2021-12-19 19:12:58,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2568a688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:58, skipping insertion in model container [2021-12-19 19:12:58,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:12:58" (1/1) ... [2021-12-19 19:12:58,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:12:58,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:12:59,024 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_spec5_product54.cil.c[3971,3984] [2021-12-19 19:12:59,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:12:59,129 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:12:59,157 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_spec5_product54.cil.c[3971,3984] [2021-12-19 19:12:59,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:12:59,227 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:12:59,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59 WrapperNode [2021-12-19 19:12:59,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:12:59,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:12:59,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:12:59,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:12:59,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,305 INFO L137 Inliner]: procedures = 59, calls = 162, calls flagged for inlining = 59, calls inlined = 145, statements flattened = 1044 [2021-12-19 19:12:59,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:12:59,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:12:59,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:12:59,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:12:59,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:12:59,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:12:59,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:12:59,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:12:59,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (1/1) ... [2021-12-19 19:12:59,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:12:59,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:12:59,405 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) [2021-12-19 19:12:59,426 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 [2021-12-19 19:12:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:12:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:12:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:12:59,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:12:59,503 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:12:59,504 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:13:00,012 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:13:00,021 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:13:00,022 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 19:13:00,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:13:00 BoogieIcfgContainer [2021-12-19 19:13:00,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:13:00,037 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:13:00,037 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:13:00,040 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:13:00,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:13:00,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:12:58" (1/3) ... [2021-12-19 19:13:00,042 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c9d8478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:13:00, skipping insertion in model container [2021-12-19 19:13:00,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:13:00,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:59" (2/3) ... [2021-12-19 19:13:00,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c9d8478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:13:00, skipping insertion in model container [2021-12-19 19:13:00,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:13:00,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:13:00" (3/3) ... [2021-12-19 19:13:00,045 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2021-12-19 19:13:00,092 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:13:00,092 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:13:00,092 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:13:00,092 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:13:00,093 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:13:00,093 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:13:00,093 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:13:00,093 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:13:00,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 281 states, 280 states have (on average 1.3678571428571429) internal successors, (383), 280 states have internal predecessors, (383), 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) [2021-12-19 19:13:00,149 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 183 [2021-12-19 19:13:00,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:00,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:00,157 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,157 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,157 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:13:00,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 281 states, 280 states have (on average 1.3678571428571429) internal successors, (383), 280 states have internal predecessors, (383), 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) [2021-12-19 19:13:00,180 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 183 [2021-12-19 19:13:00,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:00,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:00,182 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,182 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,186 INFO L791 eck$LassoCheckResult]: Stem: 267#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 179#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 237#L650true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 36#L643true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 167#L658true main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 210#L310true assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 137#L282true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 100#L59true assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 176#L571-2true [2021-12-19 19:13:00,187 INFO L793 eck$LassoCheckResult]: Loop: 176#L571-2true assume !false; 103#L572true assume test_~splverifierCounter~0#1 < 4; 53#L573true test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 278#L581true assume !(0 != test_~tmp~7#1); 263#L581-2true test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 110#L591true assume !(0 != test_~tmp___0~3#1); 112#L591-2true test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 196#L601true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 78#L609true assume 0 != test_~tmp___1~0#1; 279#L609-2true assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 57#L474true __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 16#L69true assume { :end_inline___utac_acc__Specification5_spec__2 } true; 214#L337true assume !(0 != ~pumpRunning~0); 119#L337-2true assume !(0 != ~systemActive~0); 106#L344-1true assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 85#L184true __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 149#L80true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 265#L80-1true assume { :end_inline___utac_acc__Specification5_spec__3 } true; 195#L354true assume { :end_inline_timeShift } true; 176#L571-2true [2021-12-19 19:13:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-19 19:13:00,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:00,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41512484] [2021-12-19 19:13:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:00,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,313 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,384 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:00,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 560089036, now seen corresponding path program 1 times [2021-12-19 19:13:00,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97108113] [2021-12-19 19:13:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:00,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,399 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,405 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1989837379, now seen corresponding path program 1 times [2021-12-19 19:13:00,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:00,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862767183] [2021-12-19 19:13:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:00,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:00,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:00,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862767183] [2021-12-19 19:13:00,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862767183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:00,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:00,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:13:00,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542918055] [2021-12-19 19:13:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:00,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 19:13:00,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 19:13:00,711 INFO L87 Difference]: Start difference. First operand has 281 states, 280 states have (on average 1.3678571428571429) internal successors, (383), 280 states have internal predecessors, (383), 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 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-12-19 19:13:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:00,827 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-12-19 19:13:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:13:00,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 278 states and 369 transitions. [2021-12-19 19:13:00,842 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 179 [2021-12-19 19:13:00,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 278 states to 268 states and 359 transitions. [2021-12-19 19:13:00,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-12-19 19:13:00,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-12-19 19:13:00,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 359 transitions. [2021-12-19 19:13:00,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:00,851 INFO L681 BuchiCegarLoop]: Abstraction has 268 states and 359 transitions. [2021-12-19 19:13:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 359 transitions. [2021-12-19 19:13:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-12-19 19:13:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 268 states have (on average 1.3395522388059702) internal successors, (359), 267 states have internal predecessors, (359), 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) [2021-12-19 19:13:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 359 transitions. [2021-12-19 19:13:00,882 INFO L704 BuchiCegarLoop]: Abstraction has 268 states and 359 transitions. [2021-12-19 19:13:00,882 INFO L587 BuchiCegarLoop]: Abstraction has 268 states and 359 transitions. [2021-12-19 19:13:00,882 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:13:00,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 268 states and 359 transitions. [2021-12-19 19:13:00,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 179 [2021-12-19 19:13:00,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:00,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:00,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:00,885 INFO L791 eck$LassoCheckResult]: Stem: 842#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 817#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 818#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 639#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 640#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 812#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 786#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 744#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 745#L571-2 [2021-12-19 19:13:00,886 INFO L793 eck$LassoCheckResult]: Loop: 745#L571-2 assume !false; 746#L572 assume test_~splverifierCounter~0#1 < 4; 670#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 671#L581 assume !(0 != test_~tmp~7#1); 829#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 756#L591 assume !(0 != test_~tmp___0~3#1); 757#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 759#L601 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 713#L609 assume 0 != test_~tmp___1~0#1; 714#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 676#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 604#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 605#L337 assume !(0 != ~pumpRunning~0); 768#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 629#L421 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret16#1, isMethaneAlarm_~retValue_acc~5#1;havoc isMethaneAlarm_~retValue_acc~5#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 630#L152 isMethaneAlarm_#t~ret16#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~5#1 := isMethaneAlarm_#t~ret16#1;havoc isMethaneAlarm_#t~ret16#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~5#1; 638#L465 processEnvironment_#t~ret15#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret15#1;havoc processEnvironment_#t~ret15#1; 780#L425 assume 0 != processEnvironment_~tmp~4#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 790#L455 assume { :end_inline_deactivatePump } true; 791#L421-1 assume { :end_inline_processEnvironment } true; 750#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 723#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 724#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 644#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 825#L354 assume { :end_inline_timeShift } true; 745#L571-2 [2021-12-19 19:13:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-19 19:13:00,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:00,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755773512] [2021-12-19 19:13:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:00,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:00,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1262008533, now seen corresponding path program 1 times [2021-12-19 19:13:00,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:00,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223972762] [2021-12-19 19:13:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:00,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:00,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:00,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223972762] [2021-12-19 19:13:00,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223972762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:00,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:00,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:13:00,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184588585] [2021-12-19 19:13:00,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:00,982 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:13:00,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:13:00,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:13:00,984 INFO L87 Difference]: Start difference. First operand 268 states and 359 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-19 19:13:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:01,107 INFO L93 Difference]: Finished difference Result 288 states and 365 transitions. [2021-12-19 19:13:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:13:01,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 288 states and 365 transitions. [2021-12-19 19:13:01,110 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 198 [2021-12-19 19:13:01,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 288 states to 288 states and 365 transitions. [2021-12-19 19:13:01,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 288 [2021-12-19 19:13:01,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 288 [2021-12-19 19:13:01,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 365 transitions. [2021-12-19 19:13:01,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:01,119 INFO L681 BuchiCegarLoop]: Abstraction has 288 states and 365 transitions. [2021-12-19 19:13:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states and 365 transitions. [2021-12-19 19:13:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-19 19:13:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 288 states have (on average 1.2673611111111112) internal successors, (365), 287 states have internal predecessors, (365), 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) [2021-12-19 19:13:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 365 transitions. [2021-12-19 19:13:01,132 INFO L704 BuchiCegarLoop]: Abstraction has 288 states and 365 transitions. [2021-12-19 19:13:01,132 INFO L587 BuchiCegarLoop]: Abstraction has 288 states and 365 transitions. [2021-12-19 19:13:01,132 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:13:01,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 288 states and 365 transitions. [2021-12-19 19:13:01,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 198 [2021-12-19 19:13:01,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:01,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:01,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:01,135 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, 1, 1, 1] [2021-12-19 19:13:01,136 INFO L791 eck$LassoCheckResult]: Stem: 1358#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1335#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 1336#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1189#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 1190#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 1332#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 1311#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 1276#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1277#L571-2 [2021-12-19 19:13:01,136 INFO L793 eck$LassoCheckResult]: Loop: 1277#L571-2 assume !false; 1279#L572 assume test_~splverifierCounter~0#1 < 4; 1214#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 1215#L581 assume !(0 != test_~tmp~7#1); 1348#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 1287#L591 assume !(0 != test_~tmp___0~3#1); 1288#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 1293#L601 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 1255#L609 assume 0 != test_~tmp___1~0#1; 1256#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 1221#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 1159#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 1160#L337 assume !(0 != ~pumpRunning~0); 1296#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 1181#L421 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret14#1, processEnvironment__wrappee__lowWaterSensor_~tmp~3#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3#1; 1182#L395-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 1320#L369-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1337#L192-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1218#L197-3 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 1141#L523-9 assume !(0 != isHighWaterLevel_~tmp~5#1);isHighWaterLevel_~tmp___0~1#1 := 1; 1142#L523-11 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 1281#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 1282#L373-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1302#L361-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1219#L369-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1220#L395-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 1313#L421-1 assume { :end_inline_processEnvironment } true; 1283#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 1261#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 1262#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 1192#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 1342#L354 assume { :end_inline_timeShift } true; 1277#L571-2 [2021-12-19 19:13:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-19 19:13:01,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079759798] [2021-12-19 19:13:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,146 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,156 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1936843576, now seen corresponding path program 1 times [2021-12-19 19:13:01,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098387571] [2021-12-19 19:13:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:01,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098387571] [2021-12-19 19:13:01,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098387571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:01,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:01,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:13:01,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897367818] [2021-12-19 19:13:01,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:01,181 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:13:01,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:13:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:13:01,182 INFO L87 Difference]: Start difference. First operand 288 states and 365 transitions. cyclomatic complexity: 79 Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-19 19:13:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:01,271 INFO L93 Difference]: Finished difference Result 559 states and 695 transitions. [2021-12-19 19:13:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 19:13:01,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 559 states and 695 transitions. [2021-12-19 19:13:01,277 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 390 [2021-12-19 19:13:01,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 559 states to 559 states and 695 transitions. [2021-12-19 19:13:01,281 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 559 [2021-12-19 19:13:01,281 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 559 [2021-12-19 19:13:01,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 559 states and 695 transitions. [2021-12-19 19:13:01,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:01,285 INFO L681 BuchiCegarLoop]: Abstraction has 559 states and 695 transitions. [2021-12-19 19:13:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states and 695 transitions. [2021-12-19 19:13:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 306. [2021-12-19 19:13:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 306 states have (on average 1.2516339869281046) internal successors, (383), 305 states have internal predecessors, (383), 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) [2021-12-19 19:13:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2021-12-19 19:13:01,303 INFO L704 BuchiCegarLoop]: Abstraction has 306 states and 383 transitions. [2021-12-19 19:13:01,303 INFO L587 BuchiCegarLoop]: Abstraction has 306 states and 383 transitions. [2021-12-19 19:13:01,303 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:13:01,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 306 states and 383 transitions. [2021-12-19 19:13:01,304 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 210 [2021-12-19 19:13:01,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:01,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:01,305 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:01,305 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, 1, 1, 1] [2021-12-19 19:13:01,305 INFO L791 eck$LassoCheckResult]: Stem: 2233#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 2204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 2205#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2047#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 2048#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 2201#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 2177#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 2136#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2137#L571-2 [2021-12-19 19:13:01,306 INFO L793 eck$LassoCheckResult]: Loop: 2137#L571-2 assume !false; 2141#L572 assume test_~splverifierCounter~0#1 < 4; 2074#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 2075#L581 assume !(0 != test_~tmp~7#1); 2216#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 2151#L591 assume !(0 != test_~tmp___0~3#1); 2152#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 2155#L601 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2212#L557 assume { :end_inline_startSystem } true; 2118#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 2082#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 2014#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 2015#L337 assume !(0 != ~pumpRunning~0); 2161#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 2039#L421 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret14#1, processEnvironment__wrappee__lowWaterSensor_~tmp~3#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3#1; 2040#L395-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 2187#L369-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2206#L192-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2076#L197-3 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 2077#L523-9 assume !(0 != isHighWaterLevel_~tmp~5#1);isHighWaterLevel_~tmp___0~1#1 := 1; 1999#L523-11 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 2143#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 2144#L373-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2167#L361-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2080#L369-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2081#L395-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2179#L421-1 assume { :end_inline_processEnvironment } true; 2225#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 2123#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 2124#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 2050#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 2211#L354 assume { :end_inline_timeShift } true; 2137#L571-2 [2021-12-19 19:13:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-19 19:13:01,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633239947] [2021-12-19 19:13:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,321 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash 710916443, now seen corresponding path program 1 times [2021-12-19 19:13:01,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834330760] [2021-12-19 19:13:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:01,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:01,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834330760] [2021-12-19 19:13:01,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834330760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:01,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:01,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:13:01,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201216904] [2021-12-19 19:13:01,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:01,373 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:13:01,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:13:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:13:01,374 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. cyclomatic complexity: 79 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-12-19 19:13:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:01,546 INFO L93 Difference]: Finished difference Result 888 states and 1109 transitions. [2021-12-19 19:13:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 19:13:01,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 888 states and 1109 transitions. [2021-12-19 19:13:01,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 632 [2021-12-19 19:13:01,558 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 888 states to 888 states and 1109 transitions. [2021-12-19 19:13:01,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 888 [2021-12-19 19:13:01,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 888 [2021-12-19 19:13:01,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 888 states and 1109 transitions. [2021-12-19 19:13:01,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:01,560 INFO L681 BuchiCegarLoop]: Abstraction has 888 states and 1109 transitions. [2021-12-19 19:13:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states and 1109 transitions. [2021-12-19 19:13:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 333. [2021-12-19 19:13:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 333 states have (on average 1.2312312312312312) internal successors, (410), 332 states have internal predecessors, (410), 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) [2021-12-19 19:13:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 410 transitions. [2021-12-19 19:13:01,576 INFO L704 BuchiCegarLoop]: Abstraction has 333 states and 410 transitions. [2021-12-19 19:13:01,576 INFO L587 BuchiCegarLoop]: Abstraction has 333 states and 410 transitions. [2021-12-19 19:13:01,576 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 19:13:01,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 333 states and 410 transitions. [2021-12-19 19:13:01,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 228 [2021-12-19 19:13:01,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:01,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:01,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:01,580 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, 1, 1, 1] [2021-12-19 19:13:01,580 INFO L791 eck$LassoCheckResult]: Stem: 3451#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 3415#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 3416#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3256#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 3257#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 3412#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 3384#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 3345#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3346#L571-2 [2021-12-19 19:13:01,580 INFO L793 eck$LassoCheckResult]: Loop: 3346#L571-2 assume !false; 3350#L572 assume test_~splverifierCounter~0#1 < 4; 3284#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 3285#L581 assume !(0 != test_~tmp~7#1); 3429#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 3358#L591 assume !(0 != test_~tmp___0~3#1); 3359#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 3362#L601 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3425#L557 assume { :end_inline_startSystem } true; 3325#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 3290#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 3222#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 3223#L337 assume !(0 != ~pumpRunning~0); 3368#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 3248#L421 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret14#1, processEnvironment__wrappee__lowWaterSensor_~tmp~3#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3#1; 3249#L395-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 3396#L369-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 3418#L192-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 3286#L197-3 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 3206#L523-9 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3207#L523-11 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 3352#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 3353#L373-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3385#L361-6 assume { :end_inline_processEnvironment__wrappee__base } true; 3386#L369-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3452#L395-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 3388#L421-1 assume { :end_inline_processEnvironment } true; 3355#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 3330#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 3331#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 3259#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 3424#L354 assume { :end_inline_timeShift } true; 3346#L571-2 [2021-12-19 19:13:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2021-12-19 19:13:01,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344473712] [2021-12-19 19:13:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,604 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1717381161, now seen corresponding path program 1 times [2021-12-19 19:13:01,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954659337] [2021-12-19 19:13:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:01,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:01,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954659337] [2021-12-19 19:13:01,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954659337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:01,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:01,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:13:01,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653257943] [2021-12-19 19:13:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:01,688 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:13:01,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:13:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:13:01,689 INFO L87 Difference]: Start difference. First operand 333 states and 410 transitions. cyclomatic complexity: 79 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2021-12-19 19:13:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:01,918 INFO L93 Difference]: Finished difference Result 1602 states and 1967 transitions. [2021-12-19 19:13:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 19:13:01,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1602 states and 1967 transitions. [2021-12-19 19:13:01,932 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 1089 [2021-12-19 19:13:01,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1602 states to 1602 states and 1967 transitions. [2021-12-19 19:13:01,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1602 [2021-12-19 19:13:01,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1602 [2021-12-19 19:13:01,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1602 states and 1967 transitions. [2021-12-19 19:13:01,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:01,945 INFO L681 BuchiCegarLoop]: Abstraction has 1602 states and 1967 transitions. [2021-12-19 19:13:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states and 1967 transitions. [2021-12-19 19:13:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 637. [2021-12-19 19:13:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 637 states have (on average 1.227629513343799) internal successors, (782), 636 states have internal predecessors, (782), 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) [2021-12-19 19:13:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 782 transitions. [2021-12-19 19:13:01,960 INFO L704 BuchiCegarLoop]: Abstraction has 637 states and 782 transitions. [2021-12-19 19:13:01,960 INFO L587 BuchiCegarLoop]: Abstraction has 637 states and 782 transitions. [2021-12-19 19:13:01,960 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 19:13:01,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 637 states and 782 transitions. [2021-12-19 19:13:01,963 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 442 [2021-12-19 19:13:01,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:01,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:01,964 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:01,965 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, 1, 1, 1, 1, 1] [2021-12-19 19:13:01,965 INFO L791 eck$LassoCheckResult]: Stem: 5430#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 5376#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 5377#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 5210#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 5211#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 5371#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 5346#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 5306#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 5307#L571-2 [2021-12-19 19:13:01,966 INFO L793 eck$LassoCheckResult]: Loop: 5307#L571-2 assume !false; 5309#L572 assume test_~splverifierCounter~0#1 < 4; 5310#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 5636#L581 assume !(0 != test_~tmp~7#1); 5396#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 5319#L591 assume !(0 != test_~tmp___0~3#1); 5320#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 5324#L601 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 5281#L609 assume 0 != test_~tmp___1~0#1; 5282#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 5246#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 5180#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 5181#L337 assume !(0 != ~pumpRunning~0); 5406#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 5202#L421 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret14#1, processEnvironment__wrappee__lowWaterSensor_~tmp~3#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3#1; 5203#L395-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 5357#L369-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 5379#L192-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 5413#L197-3 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 5780#L523-9 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~1#1 := 0; 5163#L523-11 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 5761#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 5759#L373-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 5345#L361-6 assume { :end_inline_processEnvironment__wrappee__base } true; 5244#L369-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 5245#L395-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 5348#L421-1 assume { :end_inline_processEnvironment } true; 5315#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 5316#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 5491#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 5489#L474-1 __utac_acc__Specification5_spec__3_#t~ret6#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;__utac_acc__Specification5_spec__3_~tmp___0~0#1 := __utac_acc__Specification5_spec__3_#t~ret6#1;havoc __utac_acc__Specification5_spec__3_#t~ret6#1; 5490#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0#1); 5429#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 5388#L354 assume { :end_inline_timeShift } true; 5307#L571-2 [2021-12-19 19:13:01,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 6 times [2021-12-19 19:13:01,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:01,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307610896] [2021-12-19 19:13:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:01,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,983 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:01,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1258260531, now seen corresponding path program 1 times [2021-12-19 19:13:02,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:02,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389421309] [2021-12-19 19:13:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:02,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:13:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:13:02,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:13:02,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389421309] [2021-12-19 19:13:02,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389421309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:13:02,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:13:02,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:13:02,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411678211] [2021-12-19 19:13:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:13:02,037 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:13:02,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:13:02,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:13:02,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:13:02,039 INFO L87 Difference]: Start difference. First operand 637 states and 782 transitions. cyclomatic complexity: 147 Second operand has 4 states, 4 states have (on average 8.5) 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) [2021-12-19 19:13:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:13:02,112 INFO L93 Difference]: Finished difference Result 978 states and 1187 transitions. [2021-12-19 19:13:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 19:13:02,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 978 states and 1187 transitions. [2021-12-19 19:13:02,118 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 692 [2021-12-19 19:13:02,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 978 states to 978 states and 1187 transitions. [2021-12-19 19:13:02,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 978 [2021-12-19 19:13:02,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 978 [2021-12-19 19:13:02,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 978 states and 1187 transitions. [2021-12-19 19:13:02,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:13:02,126 INFO L681 BuchiCegarLoop]: Abstraction has 978 states and 1187 transitions. [2021-12-19 19:13:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states and 1187 transitions. [2021-12-19 19:13:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 589. [2021-12-19 19:13:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 589 states have (on average 1.2003395585738539) internal successors, (707), 588 states have internal predecessors, (707), 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) [2021-12-19 19:13:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 707 transitions. [2021-12-19 19:13:02,137 INFO L704 BuchiCegarLoop]: Abstraction has 589 states and 707 transitions. [2021-12-19 19:13:02,137 INFO L587 BuchiCegarLoop]: Abstraction has 589 states and 707 transitions. [2021-12-19 19:13:02,137 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 19:13:02,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 589 states and 707 transitions. [2021-12-19 19:13:02,140 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 410 [2021-12-19 19:13:02,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:13:02,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:13:02,142 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:13:02,142 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, 1, 1, 1, 1, 1] [2021-12-19 19:13:02,142 INFO L791 eck$LassoCheckResult]: Stem: 7089#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(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 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);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 7017#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~4#1, main_~tmp~1#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 7018#L650 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 6835#L643 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~10#1;havoc valid_product_~retValue_acc~10#1;valid_product_~retValue_acc~10#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~10#1; 6836#L658 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 7013#L310 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 6986#L282 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 6939#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_~splverifierCounter~0#1, test_~tmp~7#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~7#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 6940#L571-2 [2021-12-19 19:13:02,143 INFO L793 eck$LassoCheckResult]: Loop: 6940#L571-2 assume !false; 6942#L572 assume test_~splverifierCounter~0#1 < 4; 6865#L573 test_~tmp~7#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 6866#L581 assume !(0 != test_~tmp~7#1); 7038#L581-2 test_~tmp___0~3#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 7223#L591 assume !(0 != test_~tmp___0~3#1); 7215#L591-2 test_~tmp___2~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 7210#L601 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 7206#L557 assume { :end_inline_startSystem } true; 7205#L609-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 7204#L474 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 7203#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 7047#L337 assume !(0 != ~pumpRunning~0); 6963#L337-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 6827#L421 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret14#1, processEnvironment__wrappee__lowWaterSensor_~tmp~3#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3#1; 6828#L395-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 6998#L369-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 7021#L192-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 7053#L197-3 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 7138#L523-9 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~1#1 := 0; 7136#L523-11 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 7132#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 7128#L373-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 6987#L361-6 assume { :end_inline_processEnvironment__wrappee__base } true; 6871#L369-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 6872#L395-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 7090#L421-1 assume { :end_inline_processEnvironment } true; 6949#L344-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 6919#L184 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 6920#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~6#1;havoc isPumpRunning_~retValue_acc~6#1;isPumpRunning_~retValue_acc~6#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~6#1; 6996#L474-1 __utac_acc__Specification5_spec__3_#t~ret6#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;__utac_acc__Specification5_spec__3_~tmp___0~0#1 := __utac_acc__Specification5_spec__3_#t~ret6#1;havoc __utac_acc__Specification5_spec__3_#t~ret6#1; 6959#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0#1); 6838#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 7030#L354 assume { :end_inline_timeShift } true; 6940#L571-2 [2021-12-19 19:13:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 7 times [2021-12-19 19:13:02,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653040168] [2021-12-19 19:13:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:02,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,155 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1154946670, now seen corresponding path program 1 times [2021-12-19 19:13:02,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:02,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928117882] [2021-12-19 19:13:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:02,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,170 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:13:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 906203707, now seen corresponding path program 1 times [2021-12-19 19:13:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:13:02,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252537317] [2021-12-19 19:13:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:13:02,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:13:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,184 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:13:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:13:02,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:13:05,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:13:05 BoogieIcfgContainer [2021-12-19 19:13:05,034 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:13:05,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:13:05,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:13:05,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:13:05,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:13:00" (3/4) ... [2021-12-19 19:13:05,037 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 19:13:05,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 19:13:05,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:13:05,092 INFO L158 Benchmark]: Toolchain (without parser) took 6262.15ms. Allocated memory was 86.0MB in the beginning and 132.1MB in the end (delta: 46.1MB). Free memory was 54.8MB in the beginning and 86.8MB in the end (delta: -32.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,093 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:13:05,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.98ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 54.6MB in the beginning and 78.3MB in the end (delta: -23.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.68ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 73.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,097 INFO L158 Benchmark]: Boogie Preprocessor took 42.96ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 70.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,098 INFO L158 Benchmark]: RCFGBuilder took 685.25ms. Allocated memory is still 109.1MB. Free memory was 70.6MB in the beginning and 40.6MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,098 INFO L158 Benchmark]: BuchiAutomizer took 4997.53ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 40.6MB in the beginning and 89.9MB in the end (delta: -49.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,098 INFO L158 Benchmark]: Witness Printer took 56.94ms. Allocated memory is still 132.1MB. Free memory was 89.9MB in the beginning and 86.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:13:05,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.98ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 54.6MB in the beginning and 78.3MB in the end (delta: -23.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.68ms. Allocated memory is still 109.1MB. Free memory was 78.3MB in the beginning and 73.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.96ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 70.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 685.25ms. Allocated memory is still 109.1MB. Free memory was 70.6MB in the beginning and 40.6MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4997.53ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 40.6MB in the beginning and 89.9MB in the end (delta: -49.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 56.94ms. Allocated memory is still 132.1MB. Free memory was 89.9MB in the beginning and 86.8MB 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 6 terminating modules (6 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.6 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 589 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.4s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2162 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 637 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4376 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4376 mSDsluCounter, 5870 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3475 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 550 IncrementalHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 2395 mSDtfsCounter, 550 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI5 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 571]: 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@7c0428f0=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c1c104f=0, retValue_acc=0, NULL=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27be54f3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ce0b32b=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a6538e1=0, retValue_acc=1, \result=1, \result=1, tmp=1, retValue_acc=0, tmp=1, tmp___2=29, \result=0, cleanupTimeShifts=4, switchedOnBeforeTS=0, \result=0, tmp=1, tmp___0=0, tmp=0, head=0, \result=1, tmp___1=0, retValue_acc=0, NULL=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48cd7a43=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22ee4db2=0, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5644306e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cd2ecbe=0, tmp=0, tmp___0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5534bd3d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d346b3=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@307281db=29} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 571]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int switchedOnBeforeTS ; [L109] int waterLevel = 1; [L110] int methaneLevelCritical = 0; [L221] int cleanupTimeShifts = 4; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L832] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L301] int retValue_acc ; [L302] int tmp ; [L306] FCALL select_helpers() [L307] FCALL select_features() [L308] CALL, EXPR valid_product() [L654] int retValue_acc ; [L657] retValue_acc = 1 [L658] return (retValue_acc); [L308] RET, EXPR valid_product() [L308] tmp = valid_product() [L310] COND TRUE \read(tmp) [L312] FCALL setup() [L313] CALL runTest() [L291] CALL __utac_acc__Specification5_spec__1() [L58] switchedOnBeforeTS = 0 [L291] RET __utac_acc__Specification5_spec__1() [L292] CALL test() [L562] int splverifierCounter ; [L563] int tmp ; [L564] int tmp___0 ; [L565] int tmp___1 ; [L566] int tmp___2 ; [L569] splverifierCounter = 0 Loop: [L571] COND TRUE 1 [L573] COND TRUE splverifierCounter < 4 [L579] tmp = __VERIFIER_nondet_int() [L581] COND FALSE !(\read(tmp)) [L589] tmp___0 = __VERIFIER_nondet_int() [L591] COND FALSE !(\read(tmp___0)) [L599] tmp___2 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___2) [L603] CALL startSystem() [L556] systemActive = 1 [L603] RET startSystem() [L616] CALL timeShift() [L335] CALL __utac_acc__Specification5_spec__2() [L67] CALL, EXPR isPumpRunning() [L470] int retValue_acc ; [L473] retValue_acc = pumpRunning [L474] return (retValue_acc); [L67] RET, EXPR isPumpRunning() [L67] switchedOnBeforeTS = isPumpRunning() [L335] RET __utac_acc__Specification5_spec__2() [L337] COND FALSE !(\read(pumpRunning)) [L344] COND TRUE \read(systemActive) [L346] CALL processEnvironment() [L418] int tmp ; [L421] COND FALSE !(\read(pumpRunning)) [L436] CALL processEnvironment__wrappee__lowWaterSensor() [L392] int tmp ; [L395] COND FALSE !(\read(pumpRunning)) [L410] CALL processEnvironment__wrappee__highWaterSensor() [L366] int tmp ; [L369] COND TRUE ! pumpRunning [L371] CALL, EXPR isHighWaterLevel() [L515] int retValue_acc ; [L516] int tmp ; [L517] int tmp___0 ; [L521] CALL, EXPR isHighWaterSensorDry() [L189] int retValue_acc ; [L192] COND TRUE waterLevel < 2 [L193] retValue_acc = 1 [L194] return (retValue_acc); [L521] RET, EXPR isHighWaterSensorDry() [L521] tmp = isHighWaterSensorDry() [L523] COND TRUE \read(tmp) [L524] tmp___0 = 0 [L528] retValue_acc = tmp___0 [L529] return (retValue_acc); [L371] RET, EXPR isHighWaterLevel() [L371] tmp = isHighWaterLevel() [L373] COND FALSE !(\read(tmp)) [L379] FCALL processEnvironment__wrappee__base() [L410] RET processEnvironment__wrappee__highWaterSensor() [L436] RET processEnvironment__wrappee__lowWaterSensor() [L346] RET processEnvironment() [L352] CALL __utac_acc__Specification5_spec__3() [L73] int tmp ; [L74] int tmp___0 ; [L78] CALL, EXPR getWaterLevel() [L180] int retValue_acc ; [L183] retValue_acc = waterLevel [L184] return (retValue_acc); [L78] RET, EXPR getWaterLevel() [L78] tmp = getWaterLevel() [L80] COND TRUE tmp != 2 [L82] CALL, EXPR isPumpRunning() [L470] int retValue_acc ; [L473] retValue_acc = pumpRunning [L474] return (retValue_acc); [L82] RET, EXPR isPumpRunning() [L82] tmp___0 = isPumpRunning() [L84] COND FALSE !(\read(tmp___0)) [L352] RET __utac_acc__Specification5_spec__3() [L616] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 19:13:05,144 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)