./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product63.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_product63.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 2e519ed25ecd119d6faecde1d069a0dace03b3e5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:59:10,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:59:10,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:59:10,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:59:10,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:59:10,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:59:10,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:59:10,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:59:10,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:59:10,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:59:10,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:59:10,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:59:10,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:59:10,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:59:10,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:59:10,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:59:10,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:59:10,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:59:10,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:59:10,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:59:10,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:59:10,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:59:10,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:59:10,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:59:10,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:59:10,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:59:10,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:59:10,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:59:10,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:59:10,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:59:10,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:59:10,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:59:10,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:59:10,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:59:10,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:59:10,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:59:10,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:59:10,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:59:10,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:59:10,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:59:10,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:59:10,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:59:10,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:59:10,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:59:10,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:59:10,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:59:10,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:59:10,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:59:10,467 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:59:10,467 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:59:10,467 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:59:10,467 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:59:10,468 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:59:10,468 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:59:10,469 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:59:10,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:59:10,469 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:59:10,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:59:10,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:59:10,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:59:10,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:59:10,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:59:10,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:59:10,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:59:10,471 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:59:10,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:59:10,471 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:59:10,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:59:10,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:59:10,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:59:10,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:59:10,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:59:10,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:59:10,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:59:10,474 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:59:10,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e519ed25ecd119d6faecde1d069a0dace03b3e5 [2021-08-27 15:59:10,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:59:10,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:59:10,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:59:10,821 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:59:10,821 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:59:10,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product63.cil.c [2021-08-27 15:59:10,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3329d835/17c8234f07ce470fb56f223c6bf51844/FLAG417a32574 [2021-08-27 15:59:11,332 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:59:11,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product63.cil.c [2021-08-27 15:59:11,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3329d835/17c8234f07ce470fb56f223c6bf51844/FLAG417a32574 [2021-08-27 15:59:11,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3329d835/17c8234f07ce470fb56f223c6bf51844 [2021-08-27 15:59:11,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:59:11,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:59:11,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:59:11,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:59:11,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:59:11,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:11" (1/1) ... [2021-08-27 15:59:11,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17296175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:11, skipping insertion in model container [2021-08-27 15:59:11,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:11" (1/1) ... [2021-08-27 15:59:11,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:59:11,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:59:11,955 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_product63.cil.c[5836,5849] [2021-08-27 15:59:12,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:59:12,082 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:59:12,102 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_product63.cil.c[5836,5849] [2021-08-27 15:59:12,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:59:12,169 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:59:12,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12 WrapperNode [2021-08-27 15:59:12,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:59:12,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:59:12,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:59:12,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:59:12,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:59:12,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:59:12,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:59:12,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:59:12,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:59:12,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:59:12,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:59:12,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:59:12,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (1/1) ... [2021-08-27 15:59:12,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:59:12,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:59:12,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:59:12,434 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 15:59:12,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:59:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:59:12,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:59:12,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:59:13,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:59:13,609 INFO L299 CfgBuilder]: Removed 352 assume(true) statements. [2021-08-27 15:59:13,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:13 BoogieIcfgContainer [2021-08-27 15:59:13,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:59:13,612 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:59:13,612 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:59:13,615 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:59:13,616 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:13,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:59:11" (1/3) ... [2021-08-27 15:59:13,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@755ce941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:59:13, skipping insertion in model container [2021-08-27 15:59:13,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:13,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:12" (2/3) ... [2021-08-27 15:59:13,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@755ce941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:59:13, skipping insertion in model container [2021-08-27 15:59:13,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:13,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:13" (3/3) ... [2021-08-27 15:59:13,619 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product63.cil.c [2021-08-27 15:59:13,655 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:59:13,668 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:59:13,669 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:59:13,669 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:59:13,669 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:59:13,669 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:59:13,669 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:59:13,670 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:59:13,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:13,755 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 15:59:13,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:13,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:13,789 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:13,789 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:13,789 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:59:13,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:13,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 15:59:13,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:13,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:13,823 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:13,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:13,827 INFO L791 eck$LassoCheckResult]: Stem: 218#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);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(21);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(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 166#L-1true havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 62#L1005true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 134#L1013true main_#t~ret69 := valid_product_#res;main_~tmp~10 := main_#t~ret69;havoc main_#t~ret69; 38#L839true assume 0 != main_~tmp~10; 51#L813true havoc test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 31#L861-1true [2021-08-27 15:59:13,828 INFO L793 eck$LassoCheckResult]: Loop: 31#L861-1true assume !false; 7#L323true assume test_~splverifierCounter~0 < 4; 27#L324true test_~tmp~6 := test_#t~nondet30;havoc test_#t~nondet30; 153#L332true assume !(0 != test_~tmp~6); 49#L332-1true test_~tmp___0~2 := test_#t~nondet31;havoc test_#t~nondet31; 46#L342true assume !(0 != test_~tmp___0~2); 12#L342-1true test_~tmp___2~0 := test_#t~nondet32;havoc test_#t~nondet32; 203#L352true assume 0 != test_~tmp___2~0; 173#L358-1true assume !(0 != ~pumpRunning~0); 80#L61true assume !(0 != ~systemActive~0); 225#L68true havoc __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_#t~ret71, __utac_acc__Specification1_spec__1_~tmp~11, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~11;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 91#L923-5true __utac_acc__Specification1_spec__1_#t~ret70 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~11 := __utac_acc__Specification1_spec__1_#t~ret70;havoc __utac_acc__Specification1_spec__1_#t~ret70; 158#L861true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~11); 31#L861-1true [2021-08-27 15:59:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:13,833 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:59:13,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:13,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96208812] [2021-08-27 15:59:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:13,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:14,070 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:14,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1666538037, now seen corresponding path program 1 times [2021-08-27 15:59:14,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:14,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958533172] [2021-08-27 15:59:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:14,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:14,238 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:14,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 47740901, now seen corresponding path program 1 times [2021-08-27 15:59:14,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:14,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280907455] [2021-08-27 15:59:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:14,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:59:14,403 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 15:59:14,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:59:14,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280907455] [2021-08-27 15:59:14,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280907455] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:59:14,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:59:14,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:59:14,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410961713] [2021-08-27 15:59:14,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:59:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:59:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:59:14,602 INFO L87 Difference]: Start difference. First operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:59:14,839 INFO L93 Difference]: Finished difference Result 492 states and 714 transitions. [2021-08-27 15:59:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:59:14,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 492 states and 714 transitions. [2021-08-27 15:59:14,852 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 321 [2021-08-27 15:59:14,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 492 states to 471 states and 693 transitions. [2021-08-27 15:59:14,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 471 [2021-08-27 15:59:14,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 471 [2021-08-27 15:59:14,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 693 transitions. [2021-08-27 15:59:14,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:59:14,865 INFO L681 BuchiCegarLoop]: Abstraction has 471 states and 693 transitions. [2021-08-27 15:59:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 693 transitions. [2021-08-27 15:59:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 258. [2021-08-27 15:59:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 258 states have (on average 1.4651162790697674) internal successors, (378), 257 states have internal predecessors, (378), 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 15:59:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 378 transitions. [2021-08-27 15:59:14,906 INFO L704 BuchiCegarLoop]: Abstraction has 258 states and 378 transitions. [2021-08-27 15:59:14,908 INFO L587 BuchiCegarLoop]: Abstraction has 258 states and 378 transitions. [2021-08-27 15:59:14,908 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:59:14,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 258 states and 378 transitions. [2021-08-27 15:59:14,910 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-08-27 15:59:14,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:14,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:14,915 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:14,915 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:14,915 INFO L791 eck$LassoCheckResult]: Stem: 951#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);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(21);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(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 934#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 832#L1005 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 833#L1013 main_#t~ret69 := valid_product_#res;main_~tmp~10 := main_#t~ret69;havoc main_#t~ret69; 794#L839 assume 0 != main_~tmp~10; 795#L813 havoc test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 784#L861-1 [2021-08-27 15:59:14,915 INFO L793 eck$LassoCheckResult]: Loop: 784#L861-1 assume !false; 743#L323 assume test_~splverifierCounter~0 < 4; 744#L324 test_~tmp~6 := test_#t~nondet30;havoc test_#t~nondet30; 777#L332 assume !(0 != test_~tmp~6); 816#L332-1 test_~tmp___0~2 := test_#t~nondet31;havoc test_#t~nondet31; 809#L342 assume !(0 != test_~tmp___0~2); 753#L342-1 test_~tmp___2~0 := test_#t~nondet32;havoc test_#t~nondet32; 754#L352 assume 0 != test_~tmp___2~0; 772#L358-1 assume !(0 != ~pumpRunning~0); 859#L61 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 844#L145 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 846#L119-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 875#L93-3 assume !(0 == ~pumpRunning~0); 812#L68 havoc __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_#t~ret71, __utac_acc__Specification1_spec__1_~tmp~11, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~11;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 873#L923-5 __utac_acc__Specification1_spec__1_#t~ret70 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~11 := __utac_acc__Specification1_spec__1_#t~ret70;havoc __utac_acc__Specification1_spec__1_#t~ret70; 874#L861 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~11); 784#L861-1 [2021-08-27 15:59:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:14,916 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:59:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:14,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703137317] [2021-08-27 15:59:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:14,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:14,956 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1439331007, now seen corresponding path program 1 times [2021-08-27 15:59:15,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:15,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684898572] [2021-08-27 15:59:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:15,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:59:15,038 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 15:59:15,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:59:15,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684898572] [2021-08-27 15:59:15,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684898572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:59:15,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:59:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:59:15,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807252573] [2021-08-27 15:59:15,045 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:59:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:59:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:59:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:59:15,046 INFO L87 Difference]: Start difference. First operand 258 states and 378 transitions. cyclomatic complexity: 123 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:59:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:59:15,218 INFO L93 Difference]: Finished difference Result 252 states and 346 transitions. [2021-08-27 15:59:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:59:15,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 252 states and 346 transitions. [2021-08-27 15:59:15,222 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-08-27 15:59:15,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 252 states to 252 states and 346 transitions. [2021-08-27 15:59:15,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 252 [2021-08-27 15:59:15,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 252 [2021-08-27 15:59:15,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 252 states and 346 transitions. [2021-08-27 15:59:15,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:59:15,226 INFO L681 BuchiCegarLoop]: Abstraction has 252 states and 346 transitions. [2021-08-27 15:59:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states and 346 transitions. [2021-08-27 15:59:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-08-27 15:59:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 252 states have (on average 1.373015873015873) internal successors, (346), 251 states have internal predecessors, (346), 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 15:59:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 346 transitions. [2021-08-27 15:59:15,235 INFO L704 BuchiCegarLoop]: Abstraction has 252 states and 346 transitions. [2021-08-27 15:59:15,235 INFO L587 BuchiCegarLoop]: Abstraction has 252 states and 346 transitions. [2021-08-27 15:59:15,235 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:59:15,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 252 states and 346 transitions. [2021-08-27 15:59:15,237 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 176 [2021-08-27 15:59:15,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:15,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:15,238 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:15,238 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:15,238 INFO L791 eck$LassoCheckResult]: Stem: 1427#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);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(21);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(21);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1350#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~7, main_~tmp~10;havoc main_~retValue_acc~7;havoc main_~tmp~10; 1351#L1005 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1364#L1013 main_#t~ret69 := valid_product_#res;main_~tmp~10 := main_#t~ret69;havoc main_#t~ret69; 1327#L839 assume 0 != main_~tmp~10; 1328#L813 havoc test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1306#L861-1 [2021-08-27 15:59:15,239 INFO L793 eck$LassoCheckResult]: Loop: 1306#L861-1 assume !false; 1254#L323 assume test_~splverifierCounter~0 < 4; 1255#L324 test_~tmp~6 := test_#t~nondet30;havoc test_#t~nondet30; 1488#L332 assume !(0 != test_~tmp~6); 1486#L332-1 test_~tmp___0~2 := test_#t~nondet31;havoc test_#t~nondet31; 1485#L342 assume !(0 != test_~tmp___0~2); 1483#L342-1 test_~tmp___2~0 := test_#t~nondet32;havoc test_#t~nondet32; 1481#L352 assume 0 != test_~tmp___2~0; 1365#L358-1 assume !(0 != ~pumpRunning~0); 1366#L61 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1373#L145 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1319#L119-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1320#L93-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret28, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~10;havoc isHighWaterSensorDry_~retValue_acc~10; 1291#L963-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~10 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~10; 1292#L968-3 isHighWaterLevel_#t~ret28 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret28;havoc isHighWaterLevel_#t~ret28; 1406#L264-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1412#L264-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1322#L270-3 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1323#L97-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1312#L68 havoc __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_#t~ret71, __utac_acc__Specification1_spec__1_~tmp~11, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~11;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 1408#L923-5 __utac_acc__Specification1_spec__1_#t~ret70 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~11 := __utac_acc__Specification1_spec__1_#t~ret70;havoc __utac_acc__Specification1_spec__1_#t~ret70; 1330#L861 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~11); 1306#L861-1 [2021-08-27 15:59:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:59:15,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:15,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362925100] [2021-08-27 15:59:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:15,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,268 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1579572237, now seen corresponding path program 1 times [2021-08-27 15:59:15,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:15,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61031477] [2021-08-27 15:59:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:15,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,307 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1462089933, now seen corresponding path program 1 times [2021-08-27 15:59:15,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:15,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712712178] [2021-08-27 15:59:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:15,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,336 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:15,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:55,761 WARN L207 SmtUtils]: Spent 40.01 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:00:40,648 WARN L207 SmtUtils]: Spent 21.18 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:00:40,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:00:40 BoogieIcfgContainer [2021-08-27 16:00:40,734 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:00:40,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:00:40,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:00:40,737 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:00:40,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:13" (3/4) ... [2021-08-27 16:00:40,740 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:00:40,829 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:00:40,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:00:40,834 INFO L168 Benchmark]: Toolchain (without parser) took 89121.42 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 36.8 MB in the beginning and 22.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 60.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,834 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:00:40,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.19 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 34.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.84 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 29.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,836 INFO L168 Benchmark]: Boogie Preprocessor took 97.22 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 51.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,836 INFO L168 Benchmark]: RCFGBuilder took 1246.74 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 51.9 MB in the beginning and 60.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,837 INFO L168 Benchmark]: BuchiAutomizer took 87122.69 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 60.1 MB in the beginning and 25.0 MB in the end (delta: 35.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,837 INFO L168 Benchmark]: Witness Printer took 96.91 ms. Allocated memory is still 104.9 MB. Free memory was 25.0 MB in the beginning and 22.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:40,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.19 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 34.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.84 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 29.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.22 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 51.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1246.74 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 51.9 MB in the beginning and 60.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87122.69 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 60.1 MB in the beginning and 25.0 MB in the end (delta: 35.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. * Witness Printer took 96.91 ms. Allocated memory is still 104.9 MB. Free memory was 25.0 MB in the beginning and 22.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 252 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 87.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.3s. Construction of modules took 0.2s. 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 39.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 213 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 258 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 550 SDtfs, 1444 SDslu, 1274 SDs, 0 SdLazy, 85 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 247.7ms 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: 322]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=5132, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27850fd6=0, NULL=5144, NULL=0, NULL=5138, retValue_acc=1, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1587be79=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=5119, NULL=0, cleanupTimeShifts=4, tmp=1, NULL=5123, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e0bc3e4=0, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6df0df70=0, \result=1, head=0, pumpRunning=0, NULL=5135, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cd224fa=61, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c2a6279=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58335c2e=0, NULL=5136, NULL=0, tmp=1, NULL=0, NULL=5140, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65d8140a=0, NULL=0, tmp___0=0, NULL=5142, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42b340ff=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47f2a879=0, NULL=5129, NULL=5137, NULL=5120, NULL=5126, NULL=0, NULL=0, NULL=5143, retValue_acc=0, NULL=5134, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=5127, tmp=0, tmp___0=0, NULL=5130, NULL=0, NULL=0, NULL=0, systemActive=1, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e2fab67=0, NULL=0, NULL=0, NULL=0, NULL=5131, \result=0, NULL=5128, NULL=5122, NULL=0, NULL=5141, NULL=0, NULL=0, NULL=5146, NULL=5125, tmp___2=61, retValue_acc=1, splverifierCounter=0, NULL=0, \result=0, NULL=5124, NULL=5145, NULL=5121, NULL=0, NULL=5133, NULL=5139} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L557] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L754] int cleanupTimeShifts = 4; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L1009] int retValue_acc ; [L1012] retValue_acc = 1 [L1013] return (retValue_acc); [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L313] int splverifierCounter ; [L314] int tmp ; [L315] int tmp___0 ; [L316] int tmp___1 ; [L317] int tmp___2 ; [L320] splverifierCounter = 0 Loop: [L322] COND TRUE 1 [L324] COND TRUE splverifierCounter < 4 [L330] tmp = __VERIFIER_nondet_int() [L332] COND FALSE !(\read(tmp)) [L340] tmp___0 = __VERIFIER_nondet_int() [L342] COND FALSE !(\read(tmp___0)) [L350] tmp___2 = __VERIFIER_nondet_int() [L352] COND TRUE \read(tmp___2) [L61] COND FALSE !(\read(pumpRunning)) [L68] COND TRUE \read(systemActive) [L142] int tmp ; [L145] COND FALSE !(\read(pumpRunning)) [L116] int tmp ; [L119] COND FALSE !(\read(pumpRunning)) [L90] int tmp ; [L93] COND TRUE ! pumpRunning [L256] int retValue_acc ; [L257] int tmp ; [L258] int tmp___0 ; [L960] int retValue_acc ; [L963] COND TRUE waterLevel < 2 [L964] retValue_acc = 1 [L965] return (retValue_acc); [L262] tmp = isHighWaterSensorDry() [L264] COND TRUE \read(tmp) [L265] tmp___0 = 0 [L269] retValue_acc = tmp___0 [L270] return (retValue_acc); [L95] tmp = isHighWaterLevel() [L97] COND FALSE !(\read(tmp)) [L854] int tmp ; [L855] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); [L859] tmp = isMethaneLevelCritical() [L861] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:00:40,916 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...