./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product59.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 118c87a61fbb1df2cb9a671e761c9c9d71205fb6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:58:50,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:58:50,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:58:50,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:58:50,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:58:50,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:58:50,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:58:50,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:58:50,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:58:50,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:58:50,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:58:50,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:58:50,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:58:50,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:58:50,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:58:50,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:58:50,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:58:50,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:58:50,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:58:50,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:58:50,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:58:50,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:58:50,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:58:50,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:58:50,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:58:50,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:58:50,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:58:50,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:58:50,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:58:50,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:58:50,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:58:50,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:58:50,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:58:50,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:58:50,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:58:50,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:58:50,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:58:50,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:58:50,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:58:50,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:58:50,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:58:50,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:58:50,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:58:50,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:58:50,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:58:50,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:58:50,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:58:50,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:58:50,552 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:58:50,552 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:58:50,552 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:58:50,552 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:58:50,553 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:58:50,553 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:58:50,553 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:58:50,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:58:50,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:58:50,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:58:50,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:58:50,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:58:50,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:58:50,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:58:50,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:58:50,557 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:58:50,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 118c87a61fbb1df2cb9a671e761c9c9d71205fb6 [2021-08-27 15:58:50,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:58:50,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:58:50,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:58:50,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:58:50,857 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:58:50,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2021-08-27 15:58:50,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d522c15/82c2d3735ff54f9eb5d8e1b214afd927/FLAGfc5a3f852 [2021-08-27 15:58:51,344 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:58:51,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2021-08-27 15:58:51,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d522c15/82c2d3735ff54f9eb5d8e1b214afd927/FLAGfc5a3f852 [2021-08-27 15:58:51,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d522c15/82c2d3735ff54f9eb5d8e1b214afd927 [2021-08-27 15:58:51,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:58:51,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:58:51,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:51,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:58:51,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:58:51,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:51" (1/1) ... [2021-08-27 15:58:51,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fb31b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:51, skipping insertion in model container [2021-08-27 15:58:51,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:51" (1/1) ... [2021-08-27 15:58:51,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:58:51,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:58:51,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3321,3334] [2021-08-27 15:58:52,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:52,015 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:58:52,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3321,3334] [2021-08-27 15:58:52,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:52,078 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:58:52,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52 WrapperNode [2021-08-27 15:58:52,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:52,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:52,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:58:52,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:58:52,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:52,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:58:52,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:58:52,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:58:52,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:58:52,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:58:52,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:58:52,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:58:52,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (1/1) ... [2021-08-27 15:58:52,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:58:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:58:52,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:58:52,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:58:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:58:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:58:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:58:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:58:53,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:58:53,033 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-27 15:58:53,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:53 BoogieIcfgContainer [2021-08-27 15:58:53,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:58:53,035 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:58:53,035 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:58:53,037 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:58:53,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:53,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:58:51" (1/3) ... [2021-08-27 15:58:53,039 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@738a05ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:53, skipping insertion in model container [2021-08-27 15:58:53,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:53,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:52" (2/3) ... [2021-08-27 15:58:53,039 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@738a05ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:53, skipping insertion in model container [2021-08-27 15:58:53,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:53,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:53" (3/3) ... [2021-08-27 15:58:53,041 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2021-08-27 15:58:53,082 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:58:53,082 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:58:53,082 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:58:53,082 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:58:53,083 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:58:53,083 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:58:53,083 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:58:53,083 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:58:53,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:53,142 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 15:58:53,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:53,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:53,150 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:53,150 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:53,150 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:58:53,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:53,166 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 15:58:53,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:53,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:53,169 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:53,169 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:53,178 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 47#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 30#L884true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 116#L892true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 114#L979true assume 0 != main_~tmp~10; 66#L956true havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 20#L163-1true [2021-08-27 15:58:53,178 INFO L793 eck$LassoCheckResult]: Loop: 20#L163-1true assume !false; 104#L204true assume test_~splverifierCounter~0 < 4; 79#L205true test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 130#L213true assume !(0 != test_~tmp~1); 119#L213-1true test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 69#L223true assume !(0 != test_~tmp___0~1); 5#L223-1true test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 68#L233true assume 0 != test_~tmp___2~0; 24#L239-1true assume !(0 != ~pumpRunning~0); 12#L270true assume !(0 != ~systemActive~0); 133#L277true havoc __utac_acc__Specification1_spec__1_#t~ret17, __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 96#L93-2true __utac_acc__Specification1_spec__1_#t~ret17 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret17;havoc __utac_acc__Specification1_spec__1_#t~ret17; 58#L163true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 20#L163-1true [2021-08-27 15:58:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:58:53,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:53,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989930703] [2021-08-27 15:58:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:53,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:53,429 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:53,572 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:53,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1670509173, now seen corresponding path program 1 times [2021-08-27 15:58:53,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:53,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104397346] [2021-08-27 15:58:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:53,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:53,591 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:53,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash 43769765, now seen corresponding path program 1 times [2021-08-27 15:58:53,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:53,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872265470] [2021-08-27 15:58:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:53,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:58:53,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:53,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872265470] [2021-08-27 15:58:53,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872265470] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:53,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:53,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:58:53,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928800459] [2021-08-27 15:58:53,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:58:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:58:53,883 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:54,076 INFO L93 Difference]: Finished difference Result 312 states and 444 transitions. [2021-08-27 15:58:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:58:54,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 312 states and 444 transitions. [2021-08-27 15:58:54,083 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 201 [2021-08-27 15:58:54,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 312 states to 291 states and 423 transitions. [2021-08-27 15:58:54,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 291 [2021-08-27 15:58:54,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 291 [2021-08-27 15:58:54,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 291 states and 423 transitions. [2021-08-27 15:58:54,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:54,104 INFO L681 BuchiCegarLoop]: Abstraction has 291 states and 423 transitions. [2021-08-27 15:58:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states and 423 transitions. [2021-08-27 15:58:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 168. [2021-08-27 15:58:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.4464285714285714) internal successors, (243), 167 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2021-08-27 15:58:54,150 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 243 transitions. [2021-08-27 15:58:54,151 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 243 transitions. [2021-08-27 15:58:54,151 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:58:54,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 243 transitions. [2021-08-27 15:58:54,155 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 116 [2021-08-27 15:58:54,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:54,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:54,156 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:54,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:54,157 INFO L791 eck$LassoCheckResult]: Stem: 590#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 542#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 514#L884 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 515#L892 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 588#L979 assume 0 != main_~tmp~10; 563#L956 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 496#L163-1 [2021-08-27 15:58:54,157 INFO L793 eck$LassoCheckResult]: Loop: 496#L163-1 assume !false; 497#L204 assume test_~splverifierCounter~0 < 4; 570#L205 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 571#L213 assume !(0 != test_~tmp~1); 589#L213-1 test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 565#L223 assume !(0 != test_~tmp___0~1); 466#L223-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 467#L233 assume 0 != test_~tmp___2~0; 503#L239-1 assume !(0 != ~pumpRunning~0); 477#L270 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 478#L328 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret23, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 499#L302-1 assume !(0 == ~pumpRunning~0); 501#L277 havoc __utac_acc__Specification1_spec__1_#t~ret17, __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 579#L93-2 __utac_acc__Specification1_spec__1_#t~ret17 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret17;havoc __utac_acc__Specification1_spec__1_#t~ret17; 551#L163 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 496#L163-1 [2021-08-27 15:58:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:58:54,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588561771] [2021-08-27 15:58:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:54,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,211 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1972735892, now seen corresponding path program 1 times [2021-08-27 15:58:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:54,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171538826] [2021-08-27 15:58:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:54,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:58:54,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:54,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171538826] [2021-08-27 15:58:54,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171538826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:54,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:54,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:54,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897421084] [2021-08-27 15:58:54,297 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:54,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:54,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:54,298 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:54,370 INFO L93 Difference]: Finished difference Result 207 states and 283 transitions. [2021-08-27 15:58:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:54,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 283 transitions. [2021-08-27 15:58:54,374 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-08-27 15:58:54,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 207 states and 283 transitions. [2021-08-27 15:58:54,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-08-27 15:58:54,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-08-27 15:58:54,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 283 transitions. [2021-08-27 15:58:54,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:54,379 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-08-27 15:58:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 283 transitions. [2021-08-27 15:58:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-08-27 15:58:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 207 states have (on average 1.3671497584541064) internal successors, (283), 206 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2021-08-27 15:58:54,386 INFO L704 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-08-27 15:58:54,386 INFO L587 BuchiCegarLoop]: Abstraction has 207 states and 283 transitions. [2021-08-27 15:58:54,386 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:58:54,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 283 transitions. [2021-08-27 15:58:54,387 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-08-27 15:58:54,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:54,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:54,388 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:54,388 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] [2021-08-27 15:58:54,388 INFO L791 eck$LassoCheckResult]: Stem: 982#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 922#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 892#L884 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 893#L892 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 978#L979 assume 0 != main_~tmp~10; 947#L956 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 876#L163-1 [2021-08-27 15:58:54,388 INFO L793 eck$LassoCheckResult]: Loop: 876#L163-1 assume !false; 877#L204 assume test_~splverifierCounter~0 < 4; 957#L205 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 958#L213 assume !(0 != test_~tmp~1); 1042#L213-1 test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 1040#L223 assume !(0 != test_~tmp___0~1); 1037#L223-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 949#L233 assume 0 != test_~tmp___2~0; 882#L239-1 assume !(0 != ~pumpRunning~0); 859#L270 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 860#L328 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret23, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 879#L302-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret43, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 880#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 913#L138-1 isHighWaterLevel_#t~ret43 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret43;havoc isHighWaterLevel_#t~ret43; 852#L448-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~2 := 0; 853#L448-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 935#L454-1 processEnvironment__wrappee__highWaterSensor_#t~ret23 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret23;havoc processEnvironment__wrappee__highWaterSensor_#t~ret23; 936#L306-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 905#L277 havoc __utac_acc__Specification1_spec__1_#t~ret17, __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 966#L93-2 __utac_acc__Specification1_spec__1_#t~ret17 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret17;havoc __utac_acc__Specification1_spec__1_#t~ret17; 933#L163 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 876#L163-1 [2021-08-27 15:58:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:58:54,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:54,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371862196] [2021-08-27 15:58:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:54,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,415 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1765215488, now seen corresponding path program 1 times [2021-08-27 15:58:54,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:54,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827302279] [2021-08-27 15:58:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:54,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,449 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,470 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1309144294, now seen corresponding path program 1 times [2021-08-27 15:58:54,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:54,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618296608] [2021-08-27 15:58:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:54,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,495 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:54,526 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:31,776 WARN L207 SmtUtils]: Spent 37.03 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:00:11,056 WARN L207 SmtUtils]: Spent 18.87 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:00:11,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:00:11 BoogieIcfgContainer [2021-08-27 16:00:11,151 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:00:11,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:00:11,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:00:11,152 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:00:11,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:53" (3/4) ... [2021-08-27 16:00:11,154 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:00:11,211 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:00:11,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:00:11,212 INFO L168 Benchmark]: Toolchain (without parser) took 79526.74 ms. Allocated memory was 58.7 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Free memory was 36.5 MB in the beginning and 59.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,213 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:00:11,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.13 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.8 MB in the end (delta: 477.0 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.29 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 31.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,214 INFO L168 Benchmark]: Boogie Preprocessor took 56.93 ms. Allocated memory is still 58.7 MB. Free memory was 31.8 MB in the beginning and 28.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,214 INFO L168 Benchmark]: RCFGBuilder took 821.84 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 34.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,215 INFO L168 Benchmark]: BuchiAutomizer took 78116.11 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 34.4 MB in the beginning and 62.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,215 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 109.1 MB. Free memory was 62.8 MB in the beginning and 59.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:11,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.13 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.8 MB in the end (delta: 477.0 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.29 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 31.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.93 ms. Allocated memory is still 58.7 MB. Free memory was 31.8 MB in the beginning and 28.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 821.84 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 34.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 78116.11 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 34.4 MB in the beginning and 62.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 109.1 MB. Free memory was 62.8 MB in the beginning and 59.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 6 locations. The remainder module has 207 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 78.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 77.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 41.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 123 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 207 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 358 SDtfs, 1039 SDslu, 797 SDs, 0 SdLazy, 69 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 203]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=18154} State at position 1 is {NULL=0, NULL=0, NULL=18162, NULL=0, NULL=18154, NULL=0, NULL=18169, retValue_acc=1, NULL=18158, methaneLevelCritical=0, NULL=0, NULL=18164, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=18177, cleanupTimeShifts=4, tmp=0, NULL=18179, NULL=18175, tmp=1, waterLevel=1, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64633625=0, \result=1, head=0, pumpRunning=0, NULL=18160, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44a21247=0, tmp=0, \result=1, NULL=0, NULL=0, NULL=18157, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=18181, tmp___0=0, NULL=18167, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17c01364=0, NULL=18165, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30000f79=56, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24af4d35=0, NULL=0, NULL=18180, retValue_acc=0, NULL=0, NULL=18176, NULL=18178, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@646e491d=0, NULL=18171, NULL=18161, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51697a90=0, tmp___0=0, NULL=18182, NULL=18174, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@217678b2=0, NULL=0, systemActive=1, NULL=0, NULL=0, NULL=18163, \result=0, NULL=0, NULL=18156, retValue_acc=0, \result=0, NULL=18172, NULL=0, NULL=18168, NULL=18159, tmp___2=56, splverifierCounter=0, NULL=0, \result=0, NULL=18155, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f56a=0, NULL=18173, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55cfd6fd=0, NULL=18166, NULL=18170} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L263] int pumpRunning = 0; [L264] int systemActive = 1; [L662] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L897] int cleanupTimeShifts = 4; [L970] int retValue_acc ; [L971] int tmp ; [L888] int retValue_acc ; [L891] retValue_acc = 1 [L892] return (retValue_acc); [L977] tmp = valid_product() [L979] COND TRUE \read(tmp) [L194] int splverifierCounter ; [L195] int tmp ; [L196] int tmp___0 ; [L197] int tmp___1 ; [L198] int tmp___2 ; [L201] splverifierCounter = 0 Loop: [L203] COND TRUE 1 [L205] COND TRUE splverifierCounter < 4 [L211] tmp = __VERIFIER_nondet_int() [L213] COND FALSE !(\read(tmp)) [L221] tmp___0 = __VERIFIER_nondet_int() [L223] COND FALSE !(\read(tmp___0)) [L231] tmp___2 = __VERIFIER_nondet_int() [L233] COND TRUE \read(tmp___2) [L270] COND FALSE !(\read(pumpRunning)) [L277] COND TRUE \read(systemActive) [L325] int tmp ; [L328] COND FALSE !(\read(pumpRunning)) [L299] int tmp ; [L302] COND TRUE ! pumpRunning [L440] int retValue_acc ; [L441] int tmp ; [L442] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L446] tmp = isHighWaterSensorDry() [L448] COND TRUE \read(tmp) [L449] tmp___0 = 0 [L453] retValue_acc = tmp___0 [L454] return (retValue_acc); [L304] tmp = isHighWaterLevel() [L306] COND FALSE !(\read(tmp)) [L156] int tmp ; [L157] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L161] tmp = isMethaneLevelCritical() [L163] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:00:11,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...