./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product41.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_spec4_product41.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 12f35b53fa21b1b526c5ccefe7a49d52db3501fafceaddf16f789eadd54f272a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:11:59,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:11:59,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:11:59,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:11:59,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:11:59,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:11:59,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:11:59,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:11:59,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:11:59,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:11:59,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:11:59,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:11:59,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:11:59,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:11:59,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:11:59,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:11:59,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:11:59,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:11:59,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:11:59,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:11:59,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:11:59,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:11:59,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:11:59,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:11:59,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:11:59,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:11:59,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:11:59,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:11:59,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:11:59,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:11:59,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:11:59,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:11:59,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:11:59,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:11:59,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:11:59,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:11:59,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:11:59,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:11:59,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:11:59,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:11:59,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:11:59,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:11:59,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:11:59,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:11:59,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:11:59,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:11:59,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:11:59,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:11:59,311 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:11:59,311 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:11:59,311 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:11:59,312 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:11:59,312 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:11:59,312 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:11:59,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:11:59,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:11:59,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:11:59,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:11:59,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:11:59,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:11:59,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:11:59,315 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:11:59,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:11:59,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:11:59,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:11:59,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:11:59,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:11:59,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:11:59,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:11:59,317 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:11:59,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12f35b53fa21b1b526c5ccefe7a49d52db3501fafceaddf16f789eadd54f272a [2021-12-19 19:11:59,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:11:59,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:11:59,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:11:59,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:11:59,589 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:11:59,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-12-19 19:11:59,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636c75195/13bc9a94cb9e4b13a113ecb59f7f8375/FLAGd429cca78 [2021-12-19 19:12:00,031 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:12:00,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-12-19 19:12:00,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636c75195/13bc9a94cb9e4b13a113ecb59f7f8375/FLAGd429cca78 [2021-12-19 19:12:00,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636c75195/13bc9a94cb9e4b13a113ecb59f7f8375 [2021-12-19 19:12:00,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:12:00,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:12:00,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:12:00,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:12:00,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:12:00,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3729acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00, skipping insertion in model container [2021-12-19 19:12:00,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:12:00,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:12:00,574 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_spec4_product41.cil.c[4000,4013] [2021-12-19 19:12:00,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:12:00,623 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:12:00,637 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_spec4_product41.cil.c[4000,4013] [2021-12-19 19:12:00,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:12:00,677 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:12:00,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00 WrapperNode [2021-12-19 19:12:00,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:12:00,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:12:00,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:12:00,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:12:00,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,713 INFO L137 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 48, calls inlined = 56, statements flattened = 452 [2021-12-19 19:12:00,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:12:00,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:12:00,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:12:00,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:12:00,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:12:00,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:12:00,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:12:00,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:12:00,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (1/1) ... [2021-12-19 19:12:00,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:12:00,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:12:00,769 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 19:12:00,812 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 19:12:00,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:12:00,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:12:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:12:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:12:00,875 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:12:00,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:12:01,103 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:12:01,108 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:12:01,108 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 19:12:01,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:12:01 BoogieIcfgContainer [2021-12-19 19:12:01,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:12:01,110 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:12:01,110 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:12:01,112 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:12:01,113 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:12:01,113 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:12:00" (1/3) ... [2021-12-19 19:12:01,114 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c994aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:12:01, skipping insertion in model container [2021-12-19 19:12:01,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:12:01,114 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:12:00" (2/3) ... [2021-12-19 19:12:01,114 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c994aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:12:01, skipping insertion in model container [2021-12-19 19:12:01,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:12:01,115 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:12:01" (3/3) ... [2021-12-19 19:12:01,115 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2021-12-19 19:12:01,153 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:12:01,153 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:12:01,154 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:12:01,154 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:12:01,154 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:12:01,154 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:12:01,154 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:12:01,154 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:12:01,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 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 19:12:01,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-19 19:12:01,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:01,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:01,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,198 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:12:01,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 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 19:12:01,209 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-19 19:12:01,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:01,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:01,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,217 INFO L791 eck$LassoCheckResult]: Stem: 106#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(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 36#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret51#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 100#L204true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 70#L197true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 68#L212true main_#t~ret51#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret51#1;havoc main_#t~ret51#1; 75#L914true assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 64#L891true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet35#1, test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 57#L604-2true [2021-12-19 19:12:01,218 INFO L793 eck$LassoCheckResult]: Loop: 57#L604-2true assume !false; 54#L605true assume test_~splverifierCounter~0#1 < 4; 17#L606true test_~tmp~4#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 34#L614true assume !(0 != test_~tmp~4#1); 37#L614-2true test_~tmp___0~1#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 39#L624true assume !(0 != test_~tmp___0~1#1); 10#L624-2true test_~tmp___2~0#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 86#L634true assume 0 != test_~tmp___2~0#1; 26#L640-2true assume { :begin_inline_timeShift } true; 102#L669true assume !(0 != ~pumpRunning~0); 43#L669-2true assume !(0 != ~systemActive~0); 4#L676-1true assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret9#1, __utac_acc__Specification4_spec__1_#t~ret10#1, __utac_acc__Specification4_spec__1_~tmp~0#1, __utac_acc__Specification4_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification4_spec__1_~tmp~0#1;havoc __utac_acc__Specification4_spec__1_~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; 111#L132true __utac_acc__Specification4_spec__1_#t~ret9#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~0#1 := __utac_acc__Specification4_spec__1_#t~ret9#1;havoc __utac_acc__Specification4_spec__1_#t~ret9#1; 13#L161true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0#1); 66#L161-1true assume { :end_inline___utac_acc__Specification4_spec__1 } true; 60#L686true assume { :end_inline_timeShift } true; 57#L604-2true [2021-12-19 19:12:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-19 19:12:01,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685099338] [2021-12-19 19:12:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash -325967420, now seen corresponding path program 1 times [2021-12-19 19:12:01,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281337176] [2021-12-19 19:12:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,423 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,429 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1029451656, now seen corresponding path program 1 times [2021-12-19 19:12:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470954186] [2021-12-19 19:12:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:12:01,564 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 19:12:01,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:12:01,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470954186] [2021-12-19 19:12:01,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470954186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:12:01,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:12:01,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:12:01,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159289153] [2021-12-19 19:12:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:12:01,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:12:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 19:12:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 19:12:01,702 INFO L87 Difference]: Start difference. First operand has 117 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:12:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:12:01,760 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2021-12-19 19:12:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:12:01,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 145 transitions. [2021-12-19 19:12:01,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 70 [2021-12-19 19:12:01,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 104 states and 135 transitions. [2021-12-19 19:12:01,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-12-19 19:12:01,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-12-19 19:12:01,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 135 transitions. [2021-12-19 19:12:01,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:12:01,776 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-12-19 19:12:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 135 transitions. [2021-12-19 19:12:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-19 19:12:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 103 states have internal predecessors, (135), 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 19:12:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2021-12-19 19:12:01,798 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-12-19 19:12:01,798 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-12-19 19:12:01,798 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:12:01,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 135 transitions. [2021-12-19 19:12:01,800 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 70 [2021-12-19 19:12:01,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:01,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:01,801 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,801 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 19:12:01,801 INFO L791 eck$LassoCheckResult]: Stem: 351#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(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret51#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 300#L204 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 336#L197 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 332#L212 main_#t~ret51#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret51#1;havoc main_#t~ret51#1; 333#L914 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 327#L891 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet35#1, test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 322#L604-2 [2021-12-19 19:12:01,801 INFO L793 eck$LassoCheckResult]: Loop: 322#L604-2 assume !false; 319#L605 assume test_~splverifierCounter~0#1 < 4; 271#L606 test_~tmp~4#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 272#L614 assume !(0 != test_~tmp~4#1); 298#L614-2 test_~tmp___0~1#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 301#L624 assume !(0 != test_~tmp___0~1#1); 254#L624-2 test_~tmp___2~0#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 262#L634 assume 0 != test_~tmp___2~0#1; 287#L640-2 assume { :begin_inline_timeShift } true; 288#L669 assume !(0 != ~pumpRunning~0); 275#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 307#L701 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 260#L693-1 assume { :end_inline_processEnvironment__wrappee__base } true; 261#L701-1 assume { :end_inline_processEnvironment } true; 249#L676-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret9#1, __utac_acc__Specification4_spec__1_#t~ret10#1, __utac_acc__Specification4_spec__1_~tmp~0#1, __utac_acc__Specification4_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification4_spec__1_~tmp~0#1;havoc __utac_acc__Specification4_spec__1_~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; 250#L132 __utac_acc__Specification4_spec__1_#t~ret9#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~0#1 := __utac_acc__Specification4_spec__1_#t~ret9#1;havoc __utac_acc__Specification4_spec__1_#t~ret9#1; 267#L161 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0#1); 266#L161-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 326#L686 assume { :end_inline_timeShift } true; 322#L604-2 [2021-12-19 19:12:01,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-19 19:12:01,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200651170] [2021-12-19 19:12:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,826 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,837 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1621750243, now seen corresponding path program 1 times [2021-12-19 19:12:01,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233658478] [2021-12-19 19:12:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:12:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:12:01,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:12:01,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233658478] [2021-12-19 19:12:01,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233658478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:12:01,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:12:01,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:12:01,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029261874] [2021-12-19 19:12:01,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:12:01,850 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:12:01,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:12:01,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:12:01,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:12:01,851 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19:12:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:12:01,884 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2021-12-19 19:12:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:12:01,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 200 transitions. [2021-12-19 19:12:01,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 112 [2021-12-19 19:12:01,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 200 transitions. [2021-12-19 19:12:01,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-12-19 19:12:01,891 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-12-19 19:12:01,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 200 transitions. [2021-12-19 19:12:01,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:12:01,895 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 200 transitions. [2021-12-19 19:12:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 200 transitions. [2021-12-19 19:12:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-12-19 19:12:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 159 states have (on average 1.2578616352201257) internal successors, (200), 158 states have internal predecessors, (200), 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 19:12:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 200 transitions. [2021-12-19 19:12:01,907 INFO L704 BuchiCegarLoop]: Abstraction has 159 states and 200 transitions. [2021-12-19 19:12:01,907 INFO L587 BuchiCegarLoop]: Abstraction has 159 states and 200 transitions. [2021-12-19 19:12:01,907 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:12:01,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 200 transitions. [2021-12-19 19:12:01,908 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 112 [2021-12-19 19:12:01,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:01,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:01,909 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:01,909 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 19:12:01,910 INFO L791 eck$LassoCheckResult]: Stem: 632#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(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 569#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret51#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 570#L204 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 612#L197 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 608#L212 main_#t~ret51#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret51#1;havoc main_#t~ret51#1; 609#L914 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 601#L891 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet35#1, test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 602#L604-2 [2021-12-19 19:12:01,910 INFO L793 eck$LassoCheckResult]: Loop: 602#L604-2 assume !false; 650#L605 assume test_~splverifierCounter~0#1 < 4; 649#L606 test_~tmp~4#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 647#L614 assume !(0 != test_~tmp~4#1); 645#L614-2 test_~tmp___0~1#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 643#L624 assume !(0 != test_~tmp___0~1#1); 641#L624-2 test_~tmp___2~0#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 640#L634 assume 0 != test_~tmp___2~0#1; 638#L640-2 assume { :begin_inline_timeShift } true; 630#L669 assume !(0 != ~pumpRunning~0); 579#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 580#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret50#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 583#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 584#L145 isHighWaterLevel_#t~ret50#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret50#1;havoc isHighWaterLevel_#t~ret50#1; 592#L821 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~2#1 := 0; 605#L821-2 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 606#L827 processEnvironment_#t~ret39#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret39#1;havoc processEnvironment_#t~ret39#1; 628#L705 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 629#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 547#L701-1 assume { :end_inline_processEnvironment } true; 518#L676-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret9#1, __utac_acc__Specification4_spec__1_#t~ret10#1, __utac_acc__Specification4_spec__1_~tmp~0#1, __utac_acc__Specification4_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification4_spec__1_~tmp~0#1;havoc __utac_acc__Specification4_spec__1_~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; 519#L132 __utac_acc__Specification4_spec__1_#t~ret9#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~0#1 := __utac_acc__Specification4_spec__1_#t~ret9#1;havoc __utac_acc__Specification4_spec__1_#t~ret9#1; 535#L161 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0#1); 534#L161-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 607#L686 assume { :end_inline_timeShift } true; 602#L604-2 [2021-12-19 19:12:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-19 19:12:01,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749083887] [2021-12-19 19:12:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,919 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:01,930 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash 105530797, now seen corresponding path program 1 times [2021-12-19 19:12:01,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191538485] [2021-12-19 19:12:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:01,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:12:01,954 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 19:12:01,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:12:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191538485] [2021-12-19 19:12:01,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191538485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:12:01,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:12:01,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:12:01,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668927319] [2021-12-19 19:12:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:12:01,955 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:12:01,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:12:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:12:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:12:01,956 INFO L87 Difference]: Start difference. First operand 159 states and 200 transitions. cyclomatic complexity: 43 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 19:12:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:12:02,004 INFO L93 Difference]: Finished difference Result 451 states and 562 transitions. [2021-12-19 19:12:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:12:02,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 451 states and 562 transitions. [2021-12-19 19:12:02,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 328 [2021-12-19 19:12:02,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 451 states to 451 states and 562 transitions. [2021-12-19 19:12:02,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 451 [2021-12-19 19:12:02,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 451 [2021-12-19 19:12:02,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 451 states and 562 transitions. [2021-12-19 19:12:02,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:12:02,012 INFO L681 BuchiCegarLoop]: Abstraction has 451 states and 562 transitions. [2021-12-19 19:12:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states and 562 transitions. [2021-12-19 19:12:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 165. [2021-12-19 19:12:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 1.2484848484848485) internal successors, (206), 164 states have internal predecessors, (206), 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 19:12:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 206 transitions. [2021-12-19 19:12:02,025 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 206 transitions. [2021-12-19 19:12:02,025 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 206 transitions. [2021-12-19 19:12:02,026 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:12:02,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 206 transitions. [2021-12-19 19:12:02,027 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 116 [2021-12-19 19:12:02,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:02,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:02,028 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:02,028 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 19:12:02,028 INFO L791 eck$LassoCheckResult]: Stem: 1256#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(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1188#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret51#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 1189#L204 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1236#L197 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 1232#L212 main_#t~ret51#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret51#1;havoc main_#t~ret51#1; 1233#L914 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 1226#L891 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet35#1, test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1227#L604-2 [2021-12-19 19:12:02,028 INFO L793 eck$LassoCheckResult]: Loop: 1227#L604-2 assume !false; 1264#L605 assume test_~splverifierCounter~0#1 < 4; 1159#L606 test_~tmp~4#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 1160#L614 assume !(0 != test_~tmp~4#1); 1186#L614-2 test_~tmp___0~1#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 1191#L624 assume !(0 != test_~tmp___0~1#1); 1143#L624-2 test_~tmp___2~0#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 1151#L634 assume 0 != test_~tmp___2~0#1; 1174#L640-2 assume { :begin_inline_timeShift } true; 1175#L669 assume !(0 != ~pumpRunning~0); 1198#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 1199#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret50#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1206#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1207#L145 isHighWaterLevel_#t~ret50#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret50#1;havoc isHighWaterLevel_#t~ret50#1; 1258#L821 assume !(0 != isHighWaterLevel_~tmp~7#1);isHighWaterLevel_~tmp___0~2#1 := 1; 1230#L821-2 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 1231#L827 processEnvironment_#t~ret39#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret39#1;havoc processEnvironment_#t~ret39#1; 1252#L705 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1253#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 1166#L701-1 assume { :end_inline_processEnvironment } true; 1138#L676-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret9#1, __utac_acc__Specification4_spec__1_#t~ret10#1, __utac_acc__Specification4_spec__1_~tmp~0#1, __utac_acc__Specification4_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification4_spec__1_~tmp~0#1;havoc __utac_acc__Specification4_spec__1_~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; 1139#L132 __utac_acc__Specification4_spec__1_#t~ret9#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~0#1 := __utac_acc__Specification4_spec__1_#t~ret9#1;havoc __utac_acc__Specification4_spec__1_#t~ret9#1; 1259#L161 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0#1); 1266#L161-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 1265#L686 assume { :end_inline_timeShift } true; 1227#L604-2 [2021-12-19 19:12:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-19 19:12:02,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:02,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733430849] [2021-12-19 19:12:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:02,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,045 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 806595375, now seen corresponding path program 1 times [2021-12-19 19:12:02,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:02,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218946401] [2021-12-19 19:12:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:02,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:12:02,101 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 19:12:02,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:12:02,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218946401] [2021-12-19 19:12:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218946401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:12:02,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:12:02,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:12:02,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66731198] [2021-12-19 19:12:02,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:12:02,108 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:12:02,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:12:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:12:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:12:02,109 INFO L87 Difference]: Start difference. First operand 165 states and 206 transitions. cyclomatic complexity: 43 Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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 19:12:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:12:02,166 INFO L93 Difference]: Finished difference Result 363 states and 452 transitions. [2021-12-19 19:12:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:12:02,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 363 states and 452 transitions. [2021-12-19 19:12:02,170 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 264 [2021-12-19 19:12:02,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 363 states to 363 states and 452 transitions. [2021-12-19 19:12:02,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 363 [2021-12-19 19:12:02,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 363 [2021-12-19 19:12:02,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 363 states and 452 transitions. [2021-12-19 19:12:02,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:12:02,172 INFO L681 BuchiCegarLoop]: Abstraction has 363 states and 452 transitions. [2021-12-19 19:12:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states and 452 transitions. [2021-12-19 19:12:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 174. [2021-12-19 19:12:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.235632183908046) internal successors, (215), 173 states have internal predecessors, (215), 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 19:12:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2021-12-19 19:12:02,179 INFO L704 BuchiCegarLoop]: Abstraction has 174 states and 215 transitions. [2021-12-19 19:12:02,179 INFO L587 BuchiCegarLoop]: Abstraction has 174 states and 215 transitions. [2021-12-19 19:12:02,179 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 19:12:02,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 215 transitions. [2021-12-19 19:12:02,180 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-12-19 19:12:02,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:12:02,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:12:02,181 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:12:02,181 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 19:12:02,181 INFO L791 eck$LassoCheckResult]: Stem: 1801#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(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1733#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret51#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 1734#L204 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1780#L197 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 1775#L212 main_#t~ret51#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret51#1;havoc main_#t~ret51#1; 1776#L914 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 1770#L891 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet35#1, test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1768#L604-2 [2021-12-19 19:12:02,182 INFO L793 eck$LassoCheckResult]: Loop: 1768#L604-2 assume !false; 1760#L605 assume test_~splverifierCounter~0#1 < 4; 1701#L606 test_~tmp~4#1 := test_#t~nondet35#1;havoc test_#t~nondet35#1; 1702#L614 assume !(0 != test_~tmp~4#1); 1844#L614-2 test_~tmp___0~1#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 1737#L624 assume !(0 != test_~tmp___0~1#1); 1685#L624-2 test_~tmp___2~0#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 1693#L634 assume 0 != test_~tmp___2~0#1; 1716#L640-2 assume { :begin_inline_timeShift } true; 1717#L669 assume !(0 != ~pumpRunning~0); 1798#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~5#1;havoc processEnvironment_~tmp~5#1; 1805#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret50#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1750#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1752#L145 isHighWaterLevel_#t~ret50#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret50#1;havoc isHighWaterLevel_#t~ret50#1; 1759#L821 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~2#1 := 0; 1773#L821-2 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 1774#L827 processEnvironment_#t~ret39#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~5#1 := processEnvironment_#t~ret39#1;havoc processEnvironment_#t~ret39#1; 1809#L705 assume !(0 != processEnvironment_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1804#L693 assume { :end_inline_processEnvironment__wrappee__base } true; 1708#L701-1 assume { :end_inline_processEnvironment } true; 1680#L676-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret9#1, __utac_acc__Specification4_spec__1_#t~ret10#1, __utac_acc__Specification4_spec__1_~tmp~0#1, __utac_acc__Specification4_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification4_spec__1_~tmp~0#1;havoc __utac_acc__Specification4_spec__1_~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; 1681#L132 __utac_acc__Specification4_spec__1_#t~ret9#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~0#1 := __utac_acc__Specification4_spec__1_#t~ret9#1;havoc __utac_acc__Specification4_spec__1_#t~ret9#1; 1697#L161 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0#1); 1696#L161-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 1767#L686 assume { :end_inline_timeShift } true; 1768#L604-2 [2021-12-19 19:12:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2021-12-19 19:12:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:02,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772481406] [2021-12-19 19:12:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:02,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,193 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 692336811, now seen corresponding path program 1 times [2021-12-19 19:12:02,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038297612] [2021-12-19 19:12:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:02,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,216 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:12:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash -558667929, now seen corresponding path program 1 times [2021-12-19 19:12:02,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:12:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759825818] [2021-12-19 19:12:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:12:02,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:12:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,236 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:12:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:12:02,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:12:04,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:12:04 BoogieIcfgContainer [2021-12-19 19:12:04,411 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:12:04,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:12:04,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:12:04,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:12:04,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:12:01" (3/4) ... [2021-12-19 19:12:04,427 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 19:12:04,500 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 19:12:04,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:12:04,501 INFO L158 Benchmark]: Toolchain (without parser) took 4089.44ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 109.9MB in the beginning and 138.4MB in the end (delta: -28.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,505 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:12:04,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.16ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.63ms. Allocated memory is still 140.5MB. Free memory was 108.4MB in the beginning and 105.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,509 INFO L158 Benchmark]: Boogie Preprocessor took 17.71ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,518 INFO L158 Benchmark]: RCFGBuilder took 377.37ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 85.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,519 INFO L158 Benchmark]: BuchiAutomizer took 3300.62ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 84.6MB in the beginning and 141.5MB in the end (delta: -56.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,519 INFO L158 Benchmark]: Witness Printer took 88.75ms. Allocated memory is still 205.5MB. Free memory was 141.5MB in the beginning and 138.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:12:04,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.16ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.63ms. Allocated memory is still 140.5MB. Free memory was 108.4MB in the beginning and 105.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.71ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.37ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 85.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 3300.62ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 84.6MB in the beginning and 141.5MB in the end (delta: -56.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Witness Printer took 88.75ms. Allocated memory is still 205.5MB. Free memory was 141.5MB in the beginning and 138.4MB in the end (delta: 3.1MB). 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 174 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 174 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1387 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1387 mSDsluCounter, 1595 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 721 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 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: 604]: 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, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66ba8106=0, head=0, tmp___0=0, pumpRunning=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47908e7f=0, tmp___0=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ff94064=0, retValue_acc=1, methaneLevelCritical=0, retValue_acc=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d11c585=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2eafe4c2=29, \result=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ecbbe1=0, \result=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64b7bb4f=0, tmp=1, tmp=1, tmp___2=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a3221c8=0, cleanupTimeShifts=4, \result=0, tmp=0, head=0, \result=1, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, retValue_acc=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f30c1bf=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 604]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L395] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L662] int pumpRunning = 0; [L663] int systemActive = 1; [L832] int cleanupTimeShifts = 4; [L905] int retValue_acc ; [L906] int tmp ; [L910] FCALL select_helpers() [L911] FCALL select_features() [L912] CALL, EXPR valid_product() [L208] int retValue_acc ; [L211] retValue_acc = 1 [L212] return (retValue_acc); [L912] RET, EXPR valid_product() [L912] tmp = valid_product() [L914] COND TRUE \read(tmp) [L916] FCALL setup() [L917] CALL runTest() [L899] CALL test() [L595] int splverifierCounter ; [L596] int tmp ; [L597] int tmp___0 ; [L598] int tmp___1 ; [L599] int tmp___2 ; [L602] splverifierCounter = 0 Loop: [L604] COND TRUE 1 [L606] COND TRUE splverifierCounter < 4 [L612] tmp = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp)) [L622] tmp___0 = __VERIFIER_nondet_int() [L624] COND FALSE !(\read(tmp___0)) [L632] tmp___2 = __VERIFIER_nondet_int() [L634] COND TRUE \read(tmp___2) [L647] CALL timeShift() [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L813] int retValue_acc ; [L814] int tmp ; [L815] int tmp___0 ; [L819] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L819] RET, EXPR isHighWaterSensorDry() [L819] tmp = isHighWaterSensorDry() [L821] COND TRUE \read(tmp) [L822] tmp___0 = 0 [L826] retValue_acc = tmp___0 [L827] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L711] FCALL processEnvironment__wrappee__base() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification4_spec__1() [L154] int tmp ; [L155] int tmp___0 ; [L159] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L159] RET, EXPR getWaterLevel() [L159] tmp = getWaterLevel() [L161] COND FALSE !(tmp == 0) [L684] RET __utac_acc__Specification4_spec__1() [L647] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 19:12:04,565 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)