./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_productSimulator.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 0d8bfdcffbfa2f8ea1896cdcb99e5a5238344d77 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:37:19,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:37:19,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:37:19,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:37:19,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:37:19,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:37:19,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:37:20,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:37:20,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:37:20,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:37:20,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:37:20,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:37:20,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:37:20,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:37:20,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:37:20,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:37:20,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:37:20,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:37:20,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:37:20,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:37:20,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:37:20,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:37:20,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:37:20,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:37:20,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:37:20,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:37:20,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:37:20,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:37:20,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:37:20,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:37:20,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:37:20,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:37:20,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:37:20,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:37:20,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:37:20,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:37:20,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:37:20,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:37:20,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:37:20,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:37:20,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:37:20,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:37:20,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:37:20,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:37:20,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:37:20,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:37:20,099 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:37:20,099 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:37:20,099 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:37:20,099 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:37:20,099 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:37:20,100 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:37:20,100 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:37:20,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:37:20,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:37:20,101 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:37:20,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:37:20,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:37:20,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:37:20,103 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:37:20,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:37:20,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:37:20,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:37:20,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:37:20,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:37:20,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:37:20,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:37:20,105 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:37:20,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8bfdcffbfa2f8ea1896cdcb99e5a5238344d77 [2021-07-06 20:37:20,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:37:20,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:37:20,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:37:20,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:37:20,416 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:37:20,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c [2021-07-06 20:37:20,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed65e9eaa/26c4c4274d21405c8d4716a91442e7b0/FLAG852e040a6 [2021-07-06 20:37:21,008 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:37:21,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c [2021-07-06 20:37:21,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed65e9eaa/26c4c4274d21405c8d4716a91442e7b0/FLAG852e040a6 [2021-07-06 20:37:21,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed65e9eaa/26c4c4274d21405c8d4716a91442e7b0 [2021-07-06 20:37:21,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:37:21,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:37:21,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:37:21,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:37:21,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:37:21,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:21,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b491e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21, skipping insertion in model container [2021-07-06 20:37:21,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:21,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:37:21,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:37:21,688 WARN L224 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_productSimulator.cil.c[5400,5413] [2021-07-06 20:37:21,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:37:21,791 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:37:21,832 WARN L224 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_productSimulator.cil.c[5400,5413] [2021-07-06 20:37:21,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:37:21,937 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:37:21,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21 WrapperNode [2021-07-06 20:37:21,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:37:21,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:37:21,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:37:21,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:37:21,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:21,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:37:22,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:37:22,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:37:22,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:37:22,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:37:22,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:37:22,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:37:22,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:37:22,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (1/1) ... [2021-07-06 20:37:22,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:37:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:37:22,250 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) [2021-07-06 20:37:22,261 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 [2021-07-06 20:37:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:37:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:37:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:37:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:37:23,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:37:23,657 INFO L299 CfgBuilder]: Removed 914 assume(true) statements. [2021-07-06 20:37:23,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:37:23 BoogieIcfgContainer [2021-07-06 20:37:23,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:37:23,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:37:23,677 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:37:23,680 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:37:23,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:37:23,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:37:21" (1/3) ... [2021-07-06 20:37:23,681 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2380121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:37:23, skipping insertion in model container [2021-07-06 20:37:23,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:37:23,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:37:21" (2/3) ... [2021-07-06 20:37:23,682 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2380121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:37:23, skipping insertion in model container [2021-07-06 20:37:23,682 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:37:23,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:37:23" (3/3) ... [2021-07-06 20:37:23,683 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2021-07-06 20:37:23,715 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:37:23,715 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:37:23,715 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:37:23,715 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:37:23,715 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:37:23,716 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:37:23,716 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:37:23,716 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:37:23,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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) [2021-07-06 20:37:23,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 311 [2021-07-06 20:37:23,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:37:23,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:37:23,778 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:23,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:23,779 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:37:23,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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) [2021-07-06 20:37:23,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 311 [2021-07-06 20:37:23,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:37:23,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:37:23,791 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:23,791 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:23,799 INFO L791 eck$LassoCheckResult]: Stem: 303#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 240#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 298#L297true havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 451#L272true select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 449#L272-1true select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 466#L272-2true select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 464#L272-3true select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 461#L272-4true select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 458#L272-5true select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 194#L289true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 463#L305true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 278#L251true assume 0 != main_~tmp~0; 218#L222true ~switchedOnBeforeTS~0 := 0; 455#L1109true havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 371#L1130-1true [2021-07-06 20:37:23,804 INFO L793 eck$LassoCheckResult]: Loop: 371#L1130-1true assume !false; 18#L698true assume test_~splverifierCounter~0 < 4; 77#L699true test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 200#L707true assume !(0 != test_~tmp~4); 202#L707-1true test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 123#L717true assume !(0 != test_~tmp___0~0); 127#L717-1true test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 287#L727true assume !(0 != test_~tmp___2~0);test_~tmp___1~0 := test_#t~nondet63;havoc test_#t~nondet63; 120#L739true assume !(0 != test_~tmp___1~0); 124#L739-1true havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 354#L1001true __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 387#L1119true assume !(0 != ~pumpRunning~0); 442#L779true assume !(0 != ~systemActive~0); 11#L786true havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 141#L133true __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 389#L1130true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~11); 371#L1130-1true [2021-07-06 20:37:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:23,809 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 1 times [2021-07-06 20:37:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:23,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913743699] [2021-07-06 20:37:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:23,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,064 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,163 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:24,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:24,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1119275952, now seen corresponding path program 1 times [2021-07-06 20:37:24,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:24,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607088420] [2021-07-06 20:37:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:24,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,226 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,235 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:24,238 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:24,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1727853441, now seen corresponding path program 1 times [2021-07-06 20:37:24,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:24,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335588119] [2021-07-06 20:37:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:24,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:37:24,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:24,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:24,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:24,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:24,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:37:24,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:37:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:37:24,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:37:24,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335588119] [2021-07-06 20:37:24,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335588119] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:37:24,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:37:24,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 20:37:24,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307966665] [2021-07-06 20:37:24,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:24,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-07-06 20:37:24,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:37:24,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 20:37:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-06 20:37:24,481 INFO L87 Difference]: Start difference. First operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-07-06 20:37:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:37:24,838 INFO L93 Difference]: Finished difference Result 1460 states and 2253 transitions. [2021-07-06 20:37:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 20:37:24,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1460 states and 2253 transitions. [2021-07-06 20:37:24,851 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 966 [2021-07-06 20:37:24,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1460 states to 1432 states and 2225 transitions. [2021-07-06 20:37:24,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1432 [2021-07-06 20:37:24,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1432 [2021-07-06 20:37:24,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1432 states and 2225 transitions. [2021-07-06 20:37:24,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:37:24,872 INFO L681 BuchiCegarLoop]: Abstraction has 1432 states and 2225 transitions. [2021-07-06 20:37:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states and 2225 transitions. [2021-07-06 20:37:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 520. [2021-07-06 20:37:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 520 states have (on average 1.5384615384615385) internal successors, (800), 519 states have internal predecessors, (800), 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) [2021-07-06 20:37:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 800 transitions. [2021-07-06 20:37:24,921 INFO L704 BuchiCegarLoop]: Abstraction has 520 states and 800 transitions. [2021-07-06 20:37:24,921 INFO L587 BuchiCegarLoop]: Abstraction has 520 states and 800 transitions. [2021-07-06 20:37:24,921 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:37:24,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 520 states and 800 transitions. [2021-07-06 20:37:24,924 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 348 [2021-07-06 20:37:24,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:37:24,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:37:24,925 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:24,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:24,926 INFO L791 eck$LassoCheckResult]: Stem: 2353#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 2269#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 2270#L297 havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2347#L272 select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2422#L272-1 select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2423#L272-2 select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2426#L272-3 select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2425#L272-4 select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2424#L272-5 select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 2228#L289 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 2229#L305 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 2320#L251 assume 0 != main_~tmp~0; 2251#L222 ~switchedOnBeforeTS~0 := 0; 2252#L1109 havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2180#L1130-1 [2021-07-06 20:37:24,926 INFO L793 eck$LassoCheckResult]: Loop: 2180#L1130-1 assume !false; 1979#L698 assume test_~splverifierCounter~0 < 4; 1980#L699 test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 2060#L707 assume !(0 != test_~tmp~4); 2237#L707-1 test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 2121#L717 assume !(0 != test_~tmp___0~0); 2122#L717-1 test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 2127#L727 assume !(0 != test_~tmp___2~0);test_~tmp___1~0 := test_#t~nondet63;havoc test_#t~nondet63; 2116#L739 assume !(0 != test_~tmp___1~0); 2118#L739-1 havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 2124#L1001 __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 2404#L1119 assume !(0 != ~pumpRunning~0); 2323#L779 assume 0 != ~systemActive~0; 2421#L922 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0); 2295#L879-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0); 2296#L836-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0); 1970#L786 havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1971#L133 __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 2146#L1130 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~11); 2180#L1130-1 [2021-07-06 20:37:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:24,927 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 2 times [2021-07-06 20:37:24,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:24,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130523595] [2021-07-06 20:37:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:24,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,960 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:24,990 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1823094131, now seen corresponding path program 1 times [2021-07-06 20:37:25,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:25,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069878792] [2021-07-06 20:37:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:25,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,010 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,012 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,015 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 748075748, now seen corresponding path program 1 times [2021-07-06 20:37:25,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:25,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672656024] [2021-07-06 20:37:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:25,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:37:25,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:25,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:25,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:25,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:25,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:25,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:37:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:37:25,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:37:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672656024] [2021-07-06 20:37:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672656024] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:37:25,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:37:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:37:25,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998676426] [2021-07-06 20:37:25,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:25,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-07-06 20:37:25,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:37:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:37:25,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:37:25,175 INFO L87 Difference]: Start difference. First operand 520 states and 800 transitions. cyclomatic complexity: 283 Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-07-06 20:37:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:37:25,531 INFO L93 Difference]: Finished difference Result 1767 states and 2691 transitions. [2021-07-06 20:37:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:37:25,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1767 states and 2691 transitions. [2021-07-06 20:37:25,543 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 690 [2021-07-06 20:37:25,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1767 states to 1767 states and 2691 transitions. [2021-07-06 20:37:25,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1767 [2021-07-06 20:37:25,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1767 [2021-07-06 20:37:25,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1767 states and 2691 transitions. [2021-07-06 20:37:25,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:37:25,560 INFO L681 BuchiCegarLoop]: Abstraction has 1767 states and 2691 transitions. [2021-07-06 20:37:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states and 2691 transitions. [2021-07-06 20:37:25,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1026. [2021-07-06 20:37:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1026 states have (on average 1.5058479532163742) internal successors, (1545), 1025 states have internal predecessors, (1545), 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) [2021-07-06 20:37:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1545 transitions. [2021-07-06 20:37:25,590 INFO L704 BuchiCegarLoop]: Abstraction has 1026 states and 1545 transitions. [2021-07-06 20:37:25,591 INFO L587 BuchiCegarLoop]: Abstraction has 1026 states and 1545 transitions. [2021-07-06 20:37:25,591 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:37:25,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1026 states and 1545 transitions. [2021-07-06 20:37:25,595 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 690 [2021-07-06 20:37:25,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:37:25,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:37:25,597 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:25,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:37:25,597 INFO L791 eck$LassoCheckResult]: Stem: 4675#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 4584#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 4585#L297 havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4668#L272 select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4780#L272-1 select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4781#L272-2 select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4786#L272-3 select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4785#L272-4 select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4784#L272-5 select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 4537#L289 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 4538#L305 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 4640#L251 assume 0 != main_~tmp~0; 4563#L222 ~switchedOnBeforeTS~0 := 0; 4564#L1109 havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4783#L1130-1 [2021-07-06 20:37:25,597 INFO L793 eck$LassoCheckResult]: Loop: 4783#L1130-1 assume !false; 4985#L698 assume test_~splverifierCounter~0 < 4; 4984#L699 test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 4983#L707 assume !(0 != test_~tmp~4); 4982#L707-1 test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 4981#L717 assume !(0 != test_~tmp___0~0); 4979#L717-1 test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 4977#L727 assume !(0 != test_~tmp___2~0);test_~tmp___1~0 := test_#t~nondet63;havoc test_#t~nondet63; 4976#L739 assume !(0 != test_~tmp___1~0); 4963#L739-1 havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 5177#L1001 __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 5174#L1119 assume !(0 != ~pumpRunning~0); 5172#L779 assume 0 != ~systemActive~0; 4958#L922 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0); 5167#L879-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0); 5164#L836-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0); 4992#L786 havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 4991#L133 __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 4990#L1130 assume 2 != __utac_acc__Specification5_spec__3_~tmp~11;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 4989#L1001-1 __utac_acc__Specification5_spec__3_#t~ret89 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret89;havoc __utac_acc__Specification5_spec__3_#t~ret89; 4988#L1134 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 4783#L1130-1 [2021-07-06 20:37:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 3 times [2021-07-06 20:37:25,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:25,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743362022] [2021-07-06 20:37:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:25,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,665 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,708 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,716 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash -353190610, now seen corresponding path program 1 times [2021-07-06 20:37:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:25,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028321016] [2021-07-06 20:37:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:25,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,721 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,723 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:37:25,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1641261663, now seen corresponding path program 1 times [2021-07-06 20:37:25,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:37:25,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187452622] [2021-07-06 20:37:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:37:25,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:37:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,752 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:37:25,775 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:37:25,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:37:25,895 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-07-06 20:37:25,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:37:25,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-07-06 20:38:12,269 WARN L205 SmtUtils]: Spent 46.29 s on a formula simplification. DAG size of input: 557 DAG size of output: 499 [2021-07-06 20:38:12,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:38:12,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2145 [2021-07-06 20:38:32,855 WARN L205 SmtUtils]: Spent 20.49 s on a formula simplification that was a NOOP. DAG size: 446 [2021-07-06 20:38:32,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:38:32 BoogieIcfgContainer [2021-07-06 20:38:32,969 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:38:32,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:38:32,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:38:32,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:38:32,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:37:23" (3/4) ... [2021-07-06 20:38:32,972 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:38:33,023 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:38:33,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:38:33,024 INFO L168 Benchmark]: Toolchain (without parser) took 71550.84 ms. Allocated memory was 65.0 MB in the beginning and 174.1 MB in the end (delta: 109.1 MB). Free memory was 44.4 MB in the beginning and 112.9 MB in the end (delta: -68.5 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,024 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.1 MB in the end (delta: 51.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:38:33,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.61 ms. Allocated memory is still 65.0 MB. Free memory was 44.3 MB in the beginning and 37.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.01 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 56.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,025 INFO L168 Benchmark]: Boogie Preprocessor took 115.98 ms. Allocated memory is still 79.7 MB. Free memory was 56.9 MB in the beginning and 49.8 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,026 INFO L168 Benchmark]: RCFGBuilder took 1453.76 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 40.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,026 INFO L168 Benchmark]: BuchiAutomizer took 69307.72 ms. Allocated memory was 100.7 MB in the beginning and 174.1 MB in the end (delta: 73.4 MB). Free memory was 40.8 MB in the beginning and 116.1 MB in the end (delta: -75.3 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,026 INFO L168 Benchmark]: Witness Printer took 53.84 ms. Allocated memory is still 174.1 MB. Free memory was 116.1 MB in the beginning and 112.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:38:33,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.1 MB in the end (delta: 51.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.61 ms. Allocated memory is still 65.0 MB. Free memory was 44.3 MB in the beginning and 37.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 149.01 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 56.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.98 ms. Allocated memory is still 79.7 MB. Free memory was 56.9 MB in the beginning and 49.8 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1453.76 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 49.5 MB in the beginning and 40.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 69307.72 ms. Allocated memory was 100.7 MB in the beginning and 174.1 MB in the end (delta: 73.4 MB). Free memory was 40.8 MB in the beginning and 116.1 MB in the end (delta: -75.3 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. * Witness Printer took 53.84 ms. Allocated memory is still 174.1 MB. Free memory was 116.1 MB in the beginning and 112.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 1026 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 69.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 68.2s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 68.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1653 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 1026 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2084 SDtfs, 7638 SDslu, 7998 SDs, 0 SdLazy, 371 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 400.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 697]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=15088} State at position 1 is {NULL=0, NULL=15115, NULL=15104, NULL=0, NULL=15113, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ab50c3d=0, NULL=15088, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cb01016=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e373aa8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@317550c0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@176bb39f=0, methaneLevelCritical=0, NULL=15092, NULL=0, tmp=0, tmp___1=0, NULL=0, cleanupTimeShifts=4, retValue_acc=0, NULL=15109, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@245adf4b=0, NULL=15097, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3046261f=0, waterLevel=1, __SELECTED_FEATURE_methaneAlarm=0, NULL=0, NULL=15114, tmp___0=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=15100, NULL=15098, NULL=0, tmp=1, NULL=0, NULL=0, NULL=0, NULL=0, __SELECTED_FEATURE_stopCommand=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fd742e8=0, NULL=15106, head=0, NULL=15112, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36595cc7=0, choice=29, NULL=0, \result=29, __SELECTED_FEATURE_base=1, retValue_acc=0, NULL=0, NULL=0, NULL=15107, NULL=15102, NULL=0, NULL=15095, NULL=0, __GUIDSL_ROOT_PRODUCTION=1, NULL=15103, NULL=0, NULL=0, switchedOnBeforeTS=0, \result=0, NULL=15090, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10a37f85=0, NULL=0, NULL=15101, NULL=15111, NULL=0, NULL=15108, __SELECTED_FEATURE_lowWaterSensor=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=15089, \result=0, retValue_acc=29, NULL=15105, tmp___0=0, NULL=0, __SELECTED_FEATURE_highWaterSensor=0, NULL=15116, retValue_acc=1, __SELECTED_FEATURE_methaneQuery=0, NULL=15096, tmp___2=0, splverifierCounter=0, NULL=0, NULL=15091, NULL=15099, NULL=15093, __SELECTED_FEATURE_startCommand=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39f04734=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67bc9e40=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@484def84=0, NULL=15110, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c09238=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d9f3bb2=0, NULL=15094, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int __SELECTED_FEATURE_base ; [L43] int __SELECTED_FEATURE_highWaterSensor ; [L44] int __SELECTED_FEATURE_lowWaterSensor ; [L45] int __SELECTED_FEATURE_methaneQuery ; [L46] int __SELECTED_FEATURE_methaneAlarm ; [L47] int __SELECTED_FEATURE_stopCommand ; [L48] int __SELECTED_FEATURE_startCommand ; [L49] int __GUIDSL_ROOT_PRODUCTION ; [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L161] int cleanupTimeShifts = 4; [L488] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L767] int pumpRunning = 0; [L768] int systemActive = 1; [L1103] int switchedOnBeforeTS ; [L242] int retValue_acc ; [L243] int tmp ; [L296] __GUIDSL_ROOT_PRODUCTION = 1 [L281] __SELECTED_FEATURE_base = 1 [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L282] __SELECTED_FEATURE_highWaterSensor = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L283] __SELECTED_FEATURE_lowWaterSensor = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L284] __SELECTED_FEATURE_methaneQuery = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L285] __SELECTED_FEATURE_methaneAlarm = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L286] __SELECTED_FEATURE_stopCommand = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L287] __SELECTED_FEATURE_startCommand = select_one() [L301] int retValue_acc ; [L304] retValue_acc = __SELECTED_FEATURE_base [L305] return (retValue_acc); [L249] tmp = valid_product() [L251] COND TRUE \read(tmp) [L1108] switchedOnBeforeTS = 0 [L688] int splverifierCounter ; [L689] int tmp ; [L690] int tmp___0 ; [L691] int tmp___1 ; [L692] int tmp___2 ; [L695] splverifierCounter = 0 Loop: [L697] COND TRUE 1 [L699] COND TRUE splverifierCounter < 4 [L705] tmp = __VERIFIER_nondet_int() [L707] COND FALSE !(\read(tmp)) [L715] tmp___0 = __VERIFIER_nondet_int() [L717] COND FALSE !(\read(tmp___0)) [L725] tmp___2 = __VERIFIER_nondet_int() [L727] COND FALSE !(\read(tmp___2)) [L737] tmp___1 = __VERIFIER_nondet_int() [L739] COND FALSE !(\read(tmp___1)) [L997] int retValue_acc ; [L1000] retValue_acc = pumpRunning [L1001] return (retValue_acc); [L1117] switchedOnBeforeTS = isPumpRunning() [L779] COND FALSE !(\read(pumpRunning)) [L786] COND TRUE \read(systemActive) [L922] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L879] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L836] COND FALSE !(\read(__SELECTED_FEATURE_highWaterSensor)) [L1123] int tmp ; [L1124] int tmp___0 ; [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L1128] tmp = getWaterLevel() [L1130] COND TRUE tmp != 2 [L997] int retValue_acc ; [L1000] retValue_acc = pumpRunning [L1001] return (retValue_acc); [L1132] tmp___0 = isPumpRunning() [L1134] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:38:33,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...