./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product50.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 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:38:44,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:38:44,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:38:45,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:38:45,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:38:45,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:38:45,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:38:45,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:38:45,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:38:45,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:38:45,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:38:45,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:38:45,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:38:45,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:38:45,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:38:45,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:38:45,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:38:45,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:38:45,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:38:45,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:38:45,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:38:45,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:38:45,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:38:45,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:38:45,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:38:45,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:38:45,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:38:45,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:38:45,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:38:45,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:38:45,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:38:45,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:38:45,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:38:45,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:38:45,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:38:45,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:38:45,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:38:45,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:38:45,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:38:45,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:38:45,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:38:45,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:38:45,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:38:45,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:38:45,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:38:45,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:38:45,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:38:45,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:38:45,104 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:38:45,104 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:38:45,104 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:38:45,104 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:38:45,105 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:38:45,105 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:38:45,105 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:38:45,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:38:45,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:38:45,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:38:45,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:38:45,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:38:45,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:38:45,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:38:45,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:38:45,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:38:45,109 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:38:45,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 [2021-12-14 23:38:45,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:38:45,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:38:45,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:38:45,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:38:45,333 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:38:45,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-12-14 23:38:45,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d561f9c/2438138645804a05b985f717662c58c0/FLAG4775d04eb [2021-12-14 23:38:45,826 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:38:45,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-12-14 23:38:45,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d561f9c/2438138645804a05b985f717662c58c0/FLAG4775d04eb [2021-12-14 23:38:45,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d561f9c/2438138645804a05b985f717662c58c0 [2021-12-14 23:38:45,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:38:45,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:38:45,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:38:45,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:38:45,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:38:45,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:45" (1/1) ... [2021-12-14 23:38:45,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4343145a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:45, skipping insertion in model container [2021-12-14 23:38:45,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:38:45" (1/1) ... [2021-12-14 23:38:45,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:38:45,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:38:46,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2021-12-14 23:38:46,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:38:46,103 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:38:46,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2021-12-14 23:38:46,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:38:46,162 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:38:46,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46 WrapperNode [2021-12-14 23:38:46,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:38:46,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:38:46,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:38:46,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:38:46,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,203 INFO L137 Inliner]: procedures = 56, calls = 156, calls flagged for inlining = 53, calls inlined = 81, statements flattened = 635 [2021-12-14 23:38:46,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:38:46,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:38:46,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:38:46,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:38:46,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:38:46,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:38:46,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:38:46,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:38:46,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (1/1) ... [2021-12-14 23:38:46,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:38:46,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:38:46,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:38:46,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:38:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:38:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:38:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:38:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:38:46,371 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:38:46,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:38:46,645 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:38:46,650 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:38:46,650 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:38:46,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46 BoogieIcfgContainer [2021-12-14 23:38:46,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:38:46,653 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:38:46,653 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:38:46,655 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:38:46,655 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,656 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:38:45" (1/3) ... [2021-12-14 23:38:46,656 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76097f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:38:46, skipping insertion in model container [2021-12-14 23:38:46,656 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,656 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:38:46" (2/3) ... [2021-12-14 23:38:46,657 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76097f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:38:46, skipping insertion in model container [2021-12-14 23:38:46,657 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:38:46,657 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46" (3/3) ... [2021-12-14 23:38:46,658 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2021-12-14 23:38:46,684 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:38:46,685 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:38:46,685 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:38:46,685 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:38:46,685 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:38:46,685 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:38:46,685 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:38:46,685 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:38:46,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:46,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2021-12-14 23:38:46,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:46,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:46,736 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,737 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,737 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:38:46,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:46,743 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2021-12-14 23:38:46,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:46,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:46,744 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,744 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:46,748 INFO L791 eck$LassoCheckResult]: Stem: 155#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 50#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret35#1, main_~retValue_acc~7#1, main_~tmp~4#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 78#L687true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 159#L680true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 163#L695true main_#t~ret35#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret35#1;havoc main_#t~ret35#1; 149#L651true assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 53#L624true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 147#L720-2true [2021-12-14 23:38:46,748 INFO L793 eck$LassoCheckResult]: Loop: 147#L720-2true assume !false; 114#L721true assume test_~splverifierCounter~0#1 < 4; 89#L722true test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 81#L730true assume !(0 != test_~tmp~5#1); 77#L730-2true test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 65#L740true assume !(0 != test_~tmp___0~1#1); 42#L740-2true test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 138#L750true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet40#1;havoc test_#t~nondet40#1; 133#L758true assume 0 != test_~tmp___1~1#1; 9#L758-2true assume { :begin_inline_timeShift } true; 20#L786true assume !(0 != ~pumpRunning~0); 60#L786-2true assume !(0 != ~systemActive~0); 38#L793-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret27#1, __utac_acc__Specification3_spec__1_#t~ret28#1, __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_~tmp~3#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 95#L503true __utac_acc__Specification3_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~3#1 := __utac_acc__Specification3_spec__1_#t~ret27#1;havoc __utac_acc__Specification3_spec__1_#t~ret27#1; 111#L429true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3#1; 164#L435-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 29#L803true assume { :end_inline_timeShift } true; 147#L720-2true [2021-12-14 23:38:46,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-14 23:38:46,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:46,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62133169] [2021-12-14 23:38:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:46,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:46,850 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:46,907 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:46,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:46,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1925499188, now seen corresponding path program 1 times [2021-12-14 23:38:46,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037825750] [2021-12-14 23:38:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:46,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:46,932 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:46,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash 993817584, now seen corresponding path program 1 times [2021-12-14 23:38:46,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:46,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091514806] [2021-12-14 23:38:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:46,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091514806] [2021-12-14 23:38:47,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091514806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:38:47,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746064515] [2021-12-14 23:38:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:47,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:38:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:38:47,277 INFO L87 Difference]: Start difference. First operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:47,346 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2021-12-14 23:38:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:38:47,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 166 states and 218 transitions. [2021-12-14 23:38:47,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 105 [2021-12-14 23:38:47,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 166 states to 156 states and 208 transitions. [2021-12-14 23:38:47,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 156 [2021-12-14 23:38:47,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 156 [2021-12-14 23:38:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 208 transitions. [2021-12-14 23:38:47,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:47,358 INFO L681 BuchiCegarLoop]: Abstraction has 156 states and 208 transitions. [2021-12-14 23:38:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states and 208 transitions. [2021-12-14 23:38:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-12-14 23:38:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 155 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 208 transitions. [2021-12-14 23:38:47,381 INFO L704 BuchiCegarLoop]: Abstraction has 156 states and 208 transitions. [2021-12-14 23:38:47,381 INFO L587 BuchiCegarLoop]: Abstraction has 156 states and 208 transitions. [2021-12-14 23:38:47,381 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:38:47,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 208 transitions. [2021-12-14 23:38:47,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 105 [2021-12-14 23:38:47,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:47,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:47,382 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,382 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] [2021-12-14 23:38:47,383 INFO L791 eck$LassoCheckResult]: Stem: 507#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 435#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret35#1, main_~retValue_acc~7#1, main_~tmp~4#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 436#L687 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 464#L680 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 508#L695 main_#t~ret35#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret35#1;havoc main_#t~ret35#1; 504#L651 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 438#L624 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 398#L720-2 [2021-12-14 23:38:47,383 INFO L793 eck$LassoCheckResult]: Loop: 398#L720-2 assume !false; 488#L721 assume test_~splverifierCounter~0#1 < 4; 471#L722 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 465#L730 assume !(0 != test_~tmp~5#1); 387#L730-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 451#L740 assume !(0 != test_~tmp___0~1#1); 376#L740-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 423#L750 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 496#L980 assume { :end_inline_startSystem } true; 361#L758-2 assume { :begin_inline_timeShift } true; 362#L786 assume !(0 != ~pumpRunning~0); 382#L786-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 446#L844 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 416#L818-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 417#L810-3 assume { :end_inline_processEnvironment__wrappee__base } true; 400#L818-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 454#L844-1 assume { :end_inline_processEnvironment } true; 414#L793-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret27#1, __utac_acc__Specification3_spec__1_#t~ret28#1, __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_~tmp~3#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 415#L503 __utac_acc__Specification3_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~3#1 := __utac_acc__Specification3_spec__1_#t~ret27#1;havoc __utac_acc__Specification3_spec__1_#t~ret27#1; 477#L429 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3#1; 467#L435-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 397#L803 assume { :end_inline_timeShift } true; 398#L720-2 [2021-12-14 23:38:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-14 23:38:47,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170499129] [2021-12-14 23:38:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,394 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,405 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1808137926, now seen corresponding path program 1 times [2021-12-14 23:38:47,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753736288] [2021-12-14 23:38:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753736288] [2021-12-14 23:38:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753736288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:38:47,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200137133] [2021-12-14 23:38:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:47,419 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:38:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:38:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:38:47,420 INFO L87 Difference]: Start difference. First operand 156 states and 208 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:47,483 INFO L93 Difference]: Finished difference Result 218 states and 280 transitions. [2021-12-14 23:38:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:38:47,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 218 states and 280 transitions. [2021-12-14 23:38:47,486 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-12-14 23:38:47,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 218 states to 218 states and 280 transitions. [2021-12-14 23:38:47,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2021-12-14 23:38:47,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2021-12-14 23:38:47,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 280 transitions. [2021-12-14 23:38:47,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:47,491 INFO L681 BuchiCegarLoop]: Abstraction has 218 states and 280 transitions. [2021-12-14 23:38:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 280 transitions. [2021-12-14 23:38:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-12-14 23:38:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 218 states have (on average 1.2844036697247707) internal successors, (280), 217 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 280 transitions. [2021-12-14 23:38:47,498 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 280 transitions. [2021-12-14 23:38:47,498 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 280 transitions. [2021-12-14 23:38:47,498 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:38:47,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 280 transitions. [2021-12-14 23:38:47,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-12-14 23:38:47,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:47,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:47,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,499 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,500 INFO L791 eck$LassoCheckResult]: Stem: 894#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 810#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret35#1, main_~retValue_acc~7#1, main_~tmp~4#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 811#L687 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 842#L680 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 896#L695 main_#t~ret35#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret35#1;havoc main_#t~ret35#1; 890#L651 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 815#L624 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 775#L720-2 [2021-12-14 23:38:47,500 INFO L793 eck$LassoCheckResult]: Loop: 775#L720-2 assume !false; 868#L721 assume test_~splverifierCounter~0#1 < 4; 869#L722 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 916#L730 assume !(0 != test_~tmp~5#1); 914#L730-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 912#L740 assume !(0 != test_~tmp___0~1#1); 910#L740-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 909#L750 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 907#L980 assume { :end_inline_startSystem } true; 906#L758-2 assume { :begin_inline_timeShift } true; 760#L786 assume !(0 != ~pumpRunning~0); 761#L786-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 858#L844 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 793#L818-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret52#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 794#L543-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 881#L548-1 isHighWaterLevel_#t~ret52#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret52#1;havoc isHighWaterLevel_#t~ret52#1; 885#L946-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 863#L946-5 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 864#L952-1 processEnvironment__wrappee__highWaterSensor_#t~ret41#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret41#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1; 818#L822-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 776#L810-2 assume { :end_inline_processEnvironment__wrappee__base } true; 777#L818-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 834#L844-1 assume { :end_inline_processEnvironment } true; 949#L793-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret27#1, __utac_acc__Specification3_spec__1_#t~ret28#1, __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_~tmp~3#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 948#L503 __utac_acc__Specification3_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~3#1 := __utac_acc__Specification3_spec__1_#t~ret27#1;havoc __utac_acc__Specification3_spec__1_#t~ret27#1; 944#L429 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3#1; 897#L435-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 774#L803 assume { :end_inline_timeShift } true; 775#L720-2 [2021-12-14 23:38:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-14 23:38:47,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590047902] [2021-12-14 23:38:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,509 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,518 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 691165874, now seen corresponding path program 1 times [2021-12-14 23:38:47,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589722919] [2021-12-14 23:38:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,524 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,529 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash -559816074, now seen corresponding path program 1 times [2021-12-14 23:38:47,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943839693] [2021-12-14 23:38:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:38:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:38:47,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:38:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943839693] [2021-12-14 23:38:47,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943839693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:38:47,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:38:47,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 23:38:47,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160745069] [2021-12-14 23:38:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:38:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:38:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:38:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:38:47,768 INFO L87 Difference]: Start difference. First operand 218 states and 280 transitions. cyclomatic complexity: 64 Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:38:47,896 INFO L93 Difference]: Finished difference Result 789 states and 1010 transitions. [2021-12-14 23:38:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 23:38:47,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 789 states and 1010 transitions. [2021-12-14 23:38:47,901 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 589 [2021-12-14 23:38:47,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 789 states to 789 states and 1010 transitions. [2021-12-14 23:38:47,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 789 [2021-12-14 23:38:47,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 789 [2021-12-14 23:38:47,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 789 states and 1010 transitions. [2021-12-14 23:38:47,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:38:47,907 INFO L681 BuchiCegarLoop]: Abstraction has 789 states and 1010 transitions. [2021-12-14 23:38:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states and 1010 transitions. [2021-12-14 23:38:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 429. [2021-12-14 23:38:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 429 states have (on average 1.2703962703962703) internal successors, (545), 428 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:38:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 545 transitions. [2021-12-14 23:38:47,937 INFO L704 BuchiCegarLoop]: Abstraction has 429 states and 545 transitions. [2021-12-14 23:38:47,937 INFO L587 BuchiCegarLoop]: Abstraction has 429 states and 545 transitions. [2021-12-14 23:38:47,937 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:38:47,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 429 states and 545 transitions. [2021-12-14 23:38:47,939 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2021-12-14 23:38:47,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:38:47,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:38:47,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,939 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:38:47,940 INFO L791 eck$LassoCheckResult]: Stem: 1927#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);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);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1835#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret35#1, main_~retValue_acc~7#1, main_~tmp~4#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 1836#L687 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1868#L680 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 1929#L695 main_#t~ret35#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret35#1;havoc main_#t~ret35#1; 1922#L651 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 1840#L624 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1800#L720-2 [2021-12-14 23:38:47,940 INFO L793 eck$LassoCheckResult]: Loop: 1800#L720-2 assume !false; 1896#L721 assume test_~splverifierCounter~0#1 < 4; 1897#L722 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 2179#L730 assume !(0 != test_~tmp~5#1); 2177#L730-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 2176#L740 assume !(0 != test_~tmp___0~1#1); 2174#L740-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 2173#L750 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2156#L980 assume { :end_inline_startSystem } true; 2154#L758-2 assume { :begin_inline_timeShift } true; 2152#L786 assume !(0 != ~pumpRunning~0); 2148#L786-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 2138#L844 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 2136#L818-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret52#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 2134#L543-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 2132#L548-1 isHighWaterLevel_#t~ret52#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret52#1;havoc isHighWaterLevel_#t~ret52#1; 2130#L946-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 2128#L946-5 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 2126#L952-1 processEnvironment__wrappee__highWaterSensor_#t~ret41#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret41#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1; 2123#L822-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2124#L810-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1921#L818-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1860#L844-1 assume { :end_inline_processEnvironment } true; 1816#L793-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret27#1, __utac_acc__Specification3_spec__1_#t~ret28#1, __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_~tmp~3#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1817#L503 __utac_acc__Specification3_spec__1_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~3#1 := __utac_acc__Specification3_spec__1_#t~ret27#1;havoc __utac_acc__Specification3_spec__1_#t~ret27#1; 1880#L429 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~4#1;havoc getWaterLevel_~retValue_acc~4#1;getWaterLevel_~retValue_acc~4#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~4#1; 1893#L535 __utac_acc__Specification3_spec__1_#t~ret28#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret28#1;havoc __utac_acc__Specification3_spec__1_#t~ret28#1; 1905#L435 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 1871#L435-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1799#L803 assume { :end_inline_timeShift } true; 1800#L720-2 [2021-12-14 23:38:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-14 23:38:47,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861031224] [2021-12-14 23:38:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,964 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1508272411, now seen corresponding path program 1 times [2021-12-14 23:38:47,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140844711] [2021-12-14 23:38:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,988 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:47,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:38:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1111081559, now seen corresponding path program 1 times [2021-12-14 23:38:47,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:38:47,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438834445] [2021-12-14 23:38:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:38:47,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:38:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,008 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:38:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:38:48,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:38:50,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:38:50 BoogieIcfgContainer [2021-12-14 23:38:50,653 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:38:50,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:38:50,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:38:50,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:38:50,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:38:46" (3/4) ... [2021-12-14 23:38:50,656 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:38:50,720 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:38:50,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:38:50,721 INFO L158 Benchmark]: Toolchain (without parser) took 4859.18ms. Allocated memory was 83.9MB in the beginning and 178.3MB in the end (delta: 94.4MB). Free memory was 64.8MB in the beginning and 78.3MB in the end (delta: -13.5MB). Peak memory consumption was 79.2MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,721 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:38:50,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.76ms. Allocated memory is still 83.9MB. Free memory was 64.5MB in the beginning and 45.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.81ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 42.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,722 INFO L158 Benchmark]: Boogie Preprocessor took 22.65ms. Allocated memory is still 83.9MB. Free memory was 42.4MB in the beginning and 40.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,722 INFO L158 Benchmark]: RCFGBuilder took 424.63ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 40.0MB in the beginning and 84.3MB in the end (delta: -44.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,722 INFO L158 Benchmark]: BuchiAutomizer took 4000.63ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 84.3MB in the beginning and 81.4MB in the end (delta: 2.9MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,723 INFO L158 Benchmark]: Witness Printer took 66.95ms. Allocated memory is still 178.3MB. Free memory was 81.4MB in the beginning and 78.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:38:50,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.76ms. Allocated memory is still 83.9MB. Free memory was 64.5MB in the beginning and 45.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.81ms. Allocated memory is still 83.9MB. Free memory was 45.9MB in the beginning and 42.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.65ms. Allocated memory is still 83.9MB. Free memory was 42.4MB in the beginning and 40.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.63ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 40.0MB in the beginning and 84.3MB in the end (delta: -44.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4000.63ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 84.3MB in the beginning and 81.4MB in the end (delta: 2.9MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Witness Printer took 66.95ms. Allocated memory is still 178.3MB. Free memory was 81.4MB in the beginning and 78.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 429 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 360 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 429 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1783 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1783 mSDsluCounter, 1897 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1164 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 733 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 720]: 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, head=0, tmp___0=0, pumpRunning=0, NULL=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44e0a4c3=0, tmp=0, methaneLevelCritical=0, retValue_acc=1, tmp___0=1, \result=0, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dd818c0=0, retValue_acc=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1965f24a=0, \result=1, \result=1, retValue_acc=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@153609a8=29, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40cda597=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@684f59dc=0, tmp___2=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c1a0a66=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f3b3809=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1783e226=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c7532c=0, cleanupTimeShifts=4, \result=0, head=0, \result=1, tmp___1=0, NULL=0, retValue_acc=1, waterLevel=1, systemActive=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34da620d=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 720]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L563] int cleanupTimeShifts = 4; [L779] int pumpRunning = 0; [L780] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L647] FCALL select_helpers() [L648] FCALL select_features() [L649] CALL, EXPR valid_product() [L691] int retValue_acc ; [L694] retValue_acc = 1 [L695] return (retValue_acc); [L649] RET, EXPR valid_product() [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L653] FCALL setup() [L654] CALL runTest() [L633] CALL test() [L711] int splverifierCounter ; [L712] int tmp ; [L713] int tmp___0 ; [L714] int tmp___1 ; [L715] int tmp___2 ; [L718] splverifierCounter = 0 Loop: [L720] COND TRUE 1 [L722] COND TRUE splverifierCounter < 4 [L728] tmp = __VERIFIER_nondet_int() [L730] COND FALSE !(\read(tmp)) [L738] tmp___0 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___0)) [L748] tmp___2 = __VERIFIER_nondet_int() [L750] COND TRUE \read(tmp___2) [L752] CALL startSystem() [L979] systemActive = 1 [L752] RET startSystem() [L765] CALL timeShift() [L786] COND FALSE !(\read(pumpRunning)) [L793] COND TRUE \read(systemActive) [L795] CALL processEnvironment() [L841] int tmp ; [L844] COND FALSE !(\read(pumpRunning)) [L859] CALL processEnvironment__wrappee__highWaterSensor() [L815] int tmp ; [L818] COND TRUE ! pumpRunning [L820] CALL, EXPR isHighWaterLevel() [L938] int retValue_acc ; [L939] int tmp ; [L940] int tmp___0 ; [L944] CALL, EXPR isHighWaterSensorDry() [L540] int retValue_acc ; [L543] COND TRUE waterLevel < 2 [L544] retValue_acc = 1 [L545] return (retValue_acc); [L944] RET, EXPR isHighWaterSensorDry() [L944] tmp = isHighWaterSensorDry() [L946] COND TRUE \read(tmp) [L947] tmp___0 = 0 [L951] retValue_acc = tmp___0 [L952] return (retValue_acc); [L820] RET, EXPR isHighWaterLevel() [L820] tmp = isHighWaterLevel() [L822] COND FALSE !(\read(tmp)) [L828] FCALL processEnvironment__wrappee__base() [L859] RET processEnvironment__wrappee__highWaterSensor() [L795] RET processEnvironment() [L801] CALL __utac_acc__Specification3_spec__1() [L421] int tmp ; [L422] int tmp___0 ; [L423] int tmp___1 ; [L427] CALL, EXPR isMethaneLevelCritical() [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L427] RET, EXPR isMethaneLevelCritical() [L427] tmp = isMethaneLevelCritical() [L429] COND FALSE !(\read(tmp)) [L433] CALL, EXPR getWaterLevel() [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L433] RET, EXPR getWaterLevel() [L433] tmp___0 = getWaterLevel() [L435] COND FALSE !(tmp___0 == 2) [L801] RET __utac_acc__Specification3_spec__1() [L765] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:38:50,771 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)