./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product61.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 54addd62801479259ccbf9158d3d6aa338ff21ad ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:26:51,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:26:51,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:26:51,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:26:51,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:26:51,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:26:51,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:26:51,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:26:51,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:26:51,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:26:51,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:26:51,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:26:51,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:26:51,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:26:51,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:26:51,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:26:51,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:26:51,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:26:51,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:26:51,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:26:51,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:26:51,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:26:51,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:26:51,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:26:51,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:26:51,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:26:51,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:26:51,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:26:51,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:26:51,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:26:51,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:26:51,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:26:51,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:26:51,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:26:51,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:26:51,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:26:51,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:26:51,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:26:51,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:26:51,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:26:51,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:26:51,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:26:51,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:26:51,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:26:51,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:26:51,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:26:51,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:26:51,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:26:51,870 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:26:51,870 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:26:51,870 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:26:51,870 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:26:51,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:26:51,872 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:26:51,872 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:26:51,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:26:51,872 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:26:51,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:26:51,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:26:51,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:26:51,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:26:51,874 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:26:51,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:26:51,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:26:51,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:26:51,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:26:51,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:26:51,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:26:51,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:26:51,877 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:26:51,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54addd62801479259ccbf9158d3d6aa338ff21ad [2021-08-27 16:26:52,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:26:52,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:26:52,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:26:52,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:26:52,176 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:26:52,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2021-08-27 16:26:52,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ea2d5d9/86ade996fd464ec8bbf6982f5f870d29/FLAG3f74e600a [2021-08-27 16:26:52,674 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:26:52,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2021-08-27 16:26:52,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ea2d5d9/86ade996fd464ec8bbf6982f5f870d29/FLAG3f74e600a [2021-08-27 16:26:52,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ea2d5d9/86ade996fd464ec8bbf6982f5f870d29 [2021-08-27 16:26:52,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:26:52,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:26:52,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:52,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:26:52,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:26:52,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:52" (1/1) ... [2021-08-27 16:26:52,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74146f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:52, skipping insertion in model container [2021-08-27 16:26:52,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:52" (1/1) ... [2021-08-27 16:26:52,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:26:52,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:26:53,124 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c[18052,18065] [2021-08-27 16:26:53,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:53,141 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:26:53,208 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c[18052,18065] [2021-08-27 16:26:53,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:53,230 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:26:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53 WrapperNode [2021-08-27 16:26:53,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:53,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:53,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:26:53,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:26:53,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:53,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:26:53,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:26:53,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:26:53,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:26:53,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:26:53,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:26:53,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:26:53,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (1/1) ... [2021-08-27 16:26:53,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:26:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:26:53,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:26:53,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:26:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:26:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:26:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:26:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:26:54,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:26:54,371 INFO L299 CfgBuilder]: Removed 362 assume(true) statements. [2021-08-27 16:26:54,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:54 BoogieIcfgContainer [2021-08-27 16:26:54,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:26:54,373 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:26:54,374 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:26:54,376 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:26:54,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:54,376 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:26:52" (1/3) ... [2021-08-27 16:26:54,377 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12ad57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:54, skipping insertion in model container [2021-08-27 16:26:54,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:54,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:53" (2/3) ... [2021-08-27 16:26:54,377 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12ad57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:54, skipping insertion in model container [2021-08-27 16:26:54,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:54,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:54" (3/3) ... [2021-08-27 16:26:54,379 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2021-08-27 16:26:54,405 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:26:54,405 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:26:54,405 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:26:54,405 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:26:54,406 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:26:54,406 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:26:54,406 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:26:54,406 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:26:54,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:54,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-08-27 16:26:54,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:54,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:54,441 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:54,442 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:54,442 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:26:54,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:54,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2021-08-27 16:26:54,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:54,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:54,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:54,449 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:54,452 INFO L791 eck$LassoCheckResult]: Stem: 224#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 169#L-1true havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 15#L910true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 147#L918true main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 130#L1015true assume 0 != main_~tmp~11; 13#L991true ~switchedOnBeforeTS~0 := 0; 51#L842true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3#L863-1true [2021-08-27 16:26:54,453 INFO L793 eck$LassoCheckResult]: Loop: 3#L863-1true assume !false; 123#L57true assume test_~splverifierCounter~0 < 4; 167#L58true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 41#L66true assume !(0 != test_~tmp~0); 61#L66-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 67#L76true assume !(0 != test_~tmp___0~0); 222#L76-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 126#L86true assume 0 != test_~tmp___2~0; 186#L92-2true havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 79#L286true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 143#L852true assume !(0 != ~pumpRunning~0); 226#L132true assume !(0 != ~systemActive~0); 34#L139true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 21#L441true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 153#L863true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 3#L863-1true [2021-08-27 16:26:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:54,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:26:54,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:54,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756276087] [2021-08-27 16:26:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:54,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:54,587 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:54,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:54,740 INFO L82 PathProgramCache]: Analyzing trace with hash 100753900, now seen corresponding path program 1 times [2021-08-27 16:26:54,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:54,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194270690] [2021-08-27 16:26:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:54,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:54,748 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:54,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:54,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2034779110, now seen corresponding path program 1 times [2021-08-27 16:26:54,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:54,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017093262] [2021-08-27 16:26:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:54,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:54,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:54,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017093262] [2021-08-27 16:26:54,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017093262] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:54,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:26:54,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277489977] [2021-08-27 16:26:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:26:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:26:55,157 INFO L87 Difference]: Start difference. First operand has 231 states, 230 states have (on average 1.5) internal successors, (345), 230 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:55,316 INFO L93 Difference]: Finished difference Result 231 states and 334 transitions. [2021-08-27 16:26:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:26:55,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 334 transitions. [2021-08-27 16:26:55,325 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:26:55,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 224 states and 327 transitions. [2021-08-27 16:26:55,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-08-27 16:26:55,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-08-27 16:26:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 327 transitions. [2021-08-27 16:26:55,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:55,335 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-08-27 16:26:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 327 transitions. [2021-08-27 16:26:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-08-27 16:26:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 223 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 327 transitions. [2021-08-27 16:26:55,368 INFO L704 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-08-27 16:26:55,368 INFO L587 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2021-08-27 16:26:55,368 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:26:55,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 327 transitions. [2021-08-27 16:26:55,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:26:55,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:55,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:55,373 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:55,373 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:55,373 INFO L791 eck$LassoCheckResult]: Stem: 702#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 675#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 505#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 506#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 653#L1015 assume 0 != main_~tmp~11; 501#L991 ~switchedOnBeforeTS~0 := 0; 502#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 480#L863-1 [2021-08-27 16:26:55,374 INFO L793 eck$LassoCheckResult]: Loop: 480#L863-1 assume !false; 481#L57 assume test_~splverifierCounter~0 < 4; 648#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 547#L66 assume !(0 != test_~tmp~0); 549#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 577#L76 assume !(0 != test_~tmp___0~0); 589#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 649#L86 assume 0 != test_~tmp___2~0; 631#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 603#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 604#L852 assume !(0 != ~pumpRunning~0); 661#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 698#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 696#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 697#L164-3 assume !(0 == ~pumpRunning~0); 491#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 516#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 517#L863 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 480#L863-1 [2021-08-27 16:26:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:55,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:26:55,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:55,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890487309] [2021-08-27 16:26:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:55,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:55,440 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:55,488 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:55,492 INFO L82 PathProgramCache]: Analyzing trace with hash 245468073, now seen corresponding path program 1 times [2021-08-27 16:26:55,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:55,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104130260] [2021-08-27 16:26:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:55,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:55,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:55,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104130260] [2021-08-27 16:26:55,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104130260] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:55,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:55,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:55,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877981671] [2021-08-27 16:26:55,520 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:55,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:55,523 INFO L87 Difference]: Start difference. First operand 224 states and 327 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:55,656 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2021-08-27 16:26:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:55,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 314 transitions. [2021-08-27 16:26:55,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-08-27 16:26:55,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 314 transitions. [2021-08-27 16:26:55,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2021-08-27 16:26:55,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2021-08-27 16:26:55,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 314 transitions. [2021-08-27 16:26:55,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:55,661 INFO L681 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-08-27 16:26:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 314 transitions. [2021-08-27 16:26:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-08-27 16:26:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 228 states have (on average 1.3771929824561404) internal successors, (314), 227 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-08-27 16:26:55,666 INFO L704 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-08-27 16:26:55,666 INFO L587 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-08-27 16:26:55,667 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:26:55,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 314 transitions. [2021-08-27 16:26:55,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-08-27 16:26:55,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:55,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:55,668 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:55,668 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] [2021-08-27 16:26:55,669 INFO L791 eck$LassoCheckResult]: Stem: 1118#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1044#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 983#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 984#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 949#L1015 assume 0 != main_~tmp~11; 950#L991 ~switchedOnBeforeTS~0 := 0; 973#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 938#L863-1 [2021-08-27 16:26:55,669 INFO L793 eck$LassoCheckResult]: Loop: 938#L863-1 assume !false; 939#L57 assume test_~splverifierCounter~0 < 4; 1041#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1036#L66 assume !(0 != test_~tmp~0); 1038#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1073#L76 assume !(0 != test_~tmp___0~0); 1088#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 942#L86 assume 0 != test_~tmp___2~0; 944#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1078#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 978#L852 assume !(0 != ~pumpRunning~0); 979#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1109#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1107#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1108#L164-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1071#L449-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1072#L454-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1094#L335-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1101#L335-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 993#L341-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 994#L168-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 955#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 999#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1000#L863 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 938#L863-1 [2021-08-27 16:26:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:55,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:26:55,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:55,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107140024] [2021-08-27 16:26:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:55,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:55,708 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:55,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:55,748 INFO L82 PathProgramCache]: Analyzing trace with hash 804540373, now seen corresponding path program 1 times [2021-08-27 16:26:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:55,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305758548] [2021-08-27 16:26:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:55,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:55,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:55,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305758548] [2021-08-27 16:26:55,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305758548] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:55,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:55,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:26:55,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707712698] [2021-08-27 16:26:55,789 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:55,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:26:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:26:55,789 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 6.0) 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) [2021-08-27 16:26:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:55,996 INFO L93 Difference]: Finished difference Result 667 states and 901 transitions. [2021-08-27 16:26:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:55,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 667 states and 901 transitions. [2021-08-27 16:26:55,999 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 421 [2021-08-27 16:26:56,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 667 states to 667 states and 901 transitions. [2021-08-27 16:26:56,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 667 [2021-08-27 16:26:56,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 667 [2021-08-27 16:26:56,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 667 states and 901 transitions. [2021-08-27 16:26:56,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:56,005 INFO L681 BuchiCegarLoop]: Abstraction has 667 states and 901 transitions. [2021-08-27 16:26:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states and 901 transitions. [2021-08-27 16:26:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 449. [2021-08-27 16:26:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 449 states have (on average 1.3452115812917596) internal successors, (604), 448 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 604 transitions. [2021-08-27 16:26:56,015 INFO L704 BuchiCegarLoop]: Abstraction has 449 states and 604 transitions. [2021-08-27 16:26:56,015 INFO L587 BuchiCegarLoop]: Abstraction has 449 states and 604 transitions. [2021-08-27 16:26:56,015 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:26:56,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 449 states and 604 transitions. [2021-08-27 16:26:56,017 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 312 [2021-08-27 16:26:56,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:56,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:56,017 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:56,017 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] [2021-08-27 16:26:56,018 INFO L791 eck$LassoCheckResult]: Stem: 2035#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1960#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1894#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1895#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 1860#L1015 assume 0 != main_~tmp~11; 1861#L991 ~switchedOnBeforeTS~0 := 0; 1884#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1849#L863-1 [2021-08-27 16:26:56,018 INFO L793 eck$LassoCheckResult]: Loop: 1849#L863-1 assume !false; 1850#L57 assume test_~splverifierCounter~0 < 4; 2044#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 2285#L66 assume !(0 != test_~tmp~0); 2284#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 2283#L76 assume !(0 != test_~tmp___0~0); 2281#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 2280#L86 assume 0 != test_~tmp___2~0; 2278#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2266#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 2264#L852 assume !(0 != ~pumpRunning~0); 2262#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2026#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2024#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2025#L164-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1987#L449-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1988#L454-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 2011#L335-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2018#L335-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1905#L341-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1906#L168-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1866#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1911#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1912#L863 assume 2 != __utac_acc__Specification5_spec__3_~tmp~10;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1913#L286-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 1930#L867 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1849#L863-1 [2021-08-27 16:26:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:26:56,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:56,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311719576] [2021-08-27 16:26:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:56,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,034 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,053 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash 69177840, now seen corresponding path program 1 times [2021-08-27 16:26:56,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:56,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691249223] [2021-08-27 16:26:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:56,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,059 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:56,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:56,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1897033802, now seen corresponding path program 1 times [2021-08-27 16:26:56,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:56,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968990915] [2021-08-27 16:26:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:56,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,105 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:56,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:37,121 WARN L207 SmtUtils]: Spent 40.67 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:28:18,436 WARN L207 SmtUtils]: Spent 19.54 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:28:18,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:28:18 BoogieIcfgContainer [2021-08-27 16:28:18,547 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:28:18,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:28:18,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:28:18,548 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:28:18,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:54" (3/4) ... [2021-08-27 16:28:18,550 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:28:18,617 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:28:18,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:28:18,621 INFO L168 Benchmark]: Toolchain (without parser) took 85915.80 ms. Allocated memory was 52.4 MB in the beginning and 178.3 MB in the end (delta: 125.8 MB). Free memory was 28.3 MB in the beginning and 55.9 MB in the end (delta: -27.6 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,622 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:28:18,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.81 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.1 MB in the beginning and 46.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.61 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 40.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,633 INFO L168 Benchmark]: Boogie Preprocessor took 70.46 ms. Allocated memory is still 71.3 MB. Free memory was 40.6 MB in the beginning and 36.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,633 INFO L168 Benchmark]: RCFGBuilder took 994.64 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 36.6 MB in the beginning and 70.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,634 INFO L168 Benchmark]: BuchiAutomizer took 84174.00 ms. Allocated memory was 102.8 MB in the beginning and 178.3 MB in the end (delta: 75.5 MB). Free memory was 70.1 MB in the beginning and 59.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,634 INFO L168 Benchmark]: Witness Printer took 72.95 ms. Allocated memory is still 178.3 MB. Free memory was 59.0 MB in the beginning and 55.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:18,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.81 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.1 MB in the beginning and 46.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.61 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 40.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.46 ms. Allocated memory is still 71.3 MB. Free memory was 40.6 MB in the beginning and 36.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 994.64 ms. Allocated memory was 71.3 MB in the beginning and 102.8 MB in the end (delta: 31.5 MB). Free memory was 36.6 MB in the beginning and 70.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84174.00 ms. Allocated memory was 102.8 MB in the beginning and 178.3 MB in the end (delta: 75.5 MB). Free memory was 70.1 MB in the beginning and 59.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.95 ms. Allocated memory is still 178.3 MB. Free memory was 59.0 MB in the beginning and 55.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 449 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 83.4s. Construction of modules took 0.2s. 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 40.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 218 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 449 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 970 SDtfs, 2050 SDslu, 971 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 291.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=29396} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1df8b6e5=52, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1938495d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e594d35=0, NULL=29396, NULL=81710, NULL=0, retValue_acc=1, NULL=81695, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6148c681=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=55777, NULL=55771, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24f5b5a5=0, NULL=81711, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ad55b3a=0, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=81696, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dbe79d2=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=55773, NULL=0, \result=1, tmp=1, NULL=0, NULL=0, NULL=55776, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, NULL=81712, NULL=29397, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f831549=0, tmp=0, head=0, NULL=81702, NULL=0, NULL=0, NULL=0, NULL=81694, NULL=81693, tmp=0, NULL=0, NULL=55778, NULL=0, NULL=81709, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19af61d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a6ed7ac=0, NULL=81704, tmp___0=0, NULL=0, NULL=81706, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2049e0a2=0, tmp=0, switchedOnBeforeTS=0, NULL=81698, NULL=81703, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=81699, retValue_acc=0, \result=0, tmp___0=0, NULL=81701, NULL=0, NULL=55775, NULL=81697, NULL=0, NULL=81707, NULL=81700, tmp___2=52, splverifierCounter=0, NULL=0, NULL=29398, retValue_acc=0, NULL=81708, NULL=81705, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c5b33b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L366] int waterLevel = 1; [L367] int methaneLevelCritical = 0; [L638] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int switchedOnBeforeTS ; [L932] int cleanupTimeShifts = 4; [L1006] int retValue_acc ; [L1007] int tmp ; [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L1013] tmp = valid_product() [L1015] COND TRUE \read(tmp) [L841] switchedOnBeforeTS = 0 [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 Loop: [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L282] int retValue_acc ; [L285] retValue_acc = pumpRunning [L286] return (retValue_acc); [L850] switchedOnBeforeTS = isPumpRunning() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND TRUE \read(systemActive) [L213] int tmp ; [L216] COND FALSE !(\read(pumpRunning)) [L187] int tmp ; [L190] COND FALSE !(\read(pumpRunning)) [L161] int tmp ; [L164] COND TRUE ! pumpRunning [L327] int retValue_acc ; [L328] int tmp ; [L329] int tmp___0 ; [L446] int retValue_acc ; [L449] COND TRUE waterLevel < 2 [L450] retValue_acc = 1 [L451] return (retValue_acc); [L333] tmp = isHighWaterSensorDry() [L335] COND TRUE \read(tmp) [L336] tmp___0 = 0 [L340] retValue_acc = tmp___0 [L341] return (retValue_acc); [L166] tmp = isHighWaterLevel() [L168] COND FALSE !(\read(tmp)) [L856] int tmp ; [L857] int tmp___0 ; [L437] int retValue_acc ; [L440] retValue_acc = waterLevel [L441] return (retValue_acc); [L861] tmp = getWaterLevel() [L863] COND TRUE tmp != 2 [L282] int retValue_acc ; [L285] retValue_acc = pumpRunning [L286] return (retValue_acc); [L865] tmp___0 = isPumpRunning() [L867] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:28:18,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...