./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer --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 f08060dbae3398b272b543e174171c518a83b9b7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 19:41:00,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:41:00,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:41:00,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:41:00,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:41:00,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:41:00,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:41:00,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:41:00,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:41:00,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:41:00,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:41:00,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:41:00,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:41:00,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:41:00,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:41:00,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:41:00,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:41:00,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:41:00,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:41:00,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:41:00,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:41:00,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:41:00,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:41:00,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:41:00,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:41:00,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:41:00,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:41:00,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:41:00,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:41:00,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:41:00,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:41:00,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:41:00,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:41:00,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:41:00,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:41:00,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:41:00,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:41:00,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:41:00,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:41:00,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:41:00,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:41:00,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:41:00,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:41:00,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:41:00,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:41:00,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:41:00,376 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:41:00,376 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:41:00,377 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:41:00,377 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:41:00,377 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:41:00,377 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:41:00,378 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:41:00,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:41:00,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:41:00,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:41:00,380 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:41:00,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:41:00,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:41:00,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:41:00,381 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:41:00,381 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:41:00,382 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:/tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f08060dbae3398b272b543e174171c518a83b9b7 [2020-11-29 19:41:00,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:41:00,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:41:00,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:41:00,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:41:00,729 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:41:00,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c [2020-11-29 19:41:00,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/data/b3d3de273/2cd643b602a4495a8f5ca1e5858b996b/FLAGbadc2ffd1 [2020-11-29 19:41:01,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:41:01,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c [2020-11-29 19:41:01,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/data/b3d3de273/2cd643b602a4495a8f5ca1e5858b996b/FLAGbadc2ffd1 [2020-11-29 19:41:01,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/data/b3d3de273/2cd643b602a4495a8f5ca1e5858b996b [2020-11-29 19:41:01,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:41:01,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:41:01,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:01,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:41:01,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:41:01,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:01" (1/1) ... [2020-11-29 19:41:01,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8ea2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:01, skipping insertion in model container [2020-11-29 19:41:01,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:01" (1/1) ... [2020-11-29 19:41:01,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:41:01,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:41:02,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:02,272 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:41:02,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:02,450 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:41:02,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02 WrapperNode [2020-11-29 19:41:02,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:02,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:02,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:41:02,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:41:02,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:02,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:41:02,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:41:02,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:41:02,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... [2020-11-29 19:41:02,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:41:02,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:41:02,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:41:02,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:41:02,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:41:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:41:02,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:41:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:41:04,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:41:04,407 INFO L298 CfgBuilder]: Removed 356 assume(true) statements. [2020-11-29 19:41:04,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:04 BoogieIcfgContainer [2020-11-29 19:41:04,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:41:04,410 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:41:04,410 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:41:04,413 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:41:04,414 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:04,414 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:41:01" (1/3) ... [2020-11-29 19:41:04,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50feac47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:41:04, skipping insertion in model container [2020-11-29 19:41:04,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:04,416 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:02" (2/3) ... [2020-11-29 19:41:04,416 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50feac47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:41:04, skipping insertion in model container [2020-11-29 19:41:04,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:04,416 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:04" (3/3) ... [2020-11-29 19:41:04,418 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-11-29 19:41:04,463 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:41:04,464 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:41:04,464 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:41:04,464 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:41:04,464 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:41:04,464 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:41:04,464 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:41:04,464 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:41:04,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states. [2020-11-29 19:41:04,520 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-29 19:41:04,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:04,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:04,530 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:04,530 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:04,531 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:41:04,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states. [2020-11-29 19:41:04,542 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-29 19:41:04,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:04,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:04,544 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:04,544 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:04,549 INFO L794 eck$LassoCheckResult]: Stem: 62#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 8#L-1true havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 202#L586true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 74#L594true main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 3#L175true assume 0 != main_~tmp~1; 25#L147true ~methAndRunningLastTime~0 := 0; 111#L51true havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 110#L62-1true [2020-11-29 19:41:04,549 INFO L796 eck$LassoCheckResult]: Loop: 110#L62-1true assume !false; 5#L610true assume test_~splverifierCounter~0 < 4; 61#L611true test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 200#L619true assume !(0 != test_~tmp~5); 203#L619-1true test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 134#L629true assume !(0 != test_~tmp___0~1); 114#L629-1true test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 60#L639true assume 0 != test_~tmp___2~0; 146#L645-2true assume !(0 != ~pumpRunning~0); 83#L781true assume !(0 != ~systemActive~0); 148#L788true havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 218#L712-5true __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 112#L62true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 110#L62-1true [2020-11-29 19:41:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:04,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 19:41:04,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:04,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577997225] [2020-11-29 19:41:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:04,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:05,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:05,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash 9156236, now seen corresponding path program 1 times [2020-11-29 19:41:05,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:05,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128514028] [2020-11-29 19:41:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:05,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:05,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:05,130 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:05,135 INFO L82 PathProgramCache]: Analyzing trace with hash 842452742, now seen corresponding path program 1 times [2020-11-29 19:41:05,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:05,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282017034] [2020-11-29 19:41:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:05,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282017034] [2020-11-29 19:41:05,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:05,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:41:05,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603256833] [2020-11-29 19:41:05,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:41:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:41:05,489 INFO L87 Difference]: Start difference. First operand 229 states. Second operand 6 states. [2020-11-29 19:41:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:05,762 INFO L93 Difference]: Finished difference Result 226 states and 329 transitions. [2020-11-29 19:41:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:41:05,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 329 transitions. [2020-11-29 19:41:05,774 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2020-11-29 19:41:05,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 219 states and 322 transitions. [2020-11-29 19:41:05,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2020-11-29 19:41:05,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2020-11-29 19:41:05,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 322 transitions. [2020-11-29 19:41:05,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:41:05,791 INFO L691 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2020-11-29 19:41:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 322 transitions. [2020-11-29 19:41:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-11-29 19:41:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-11-29 19:41:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2020-11-29 19:41:05,834 INFO L714 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2020-11-29 19:41:05,834 INFO L594 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2020-11-29 19:41:05,834 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:41:05,834 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 322 transitions. [2020-11-29 19:41:05,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2020-11-29 19:41:05,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:05,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:05,839 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:05,839 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:05,839 INFO L794 eck$LassoCheckResult]: Stem: 564#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 483#L-1 havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 484#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 585#L594 main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 473#L175 assume 0 != main_~tmp~1; 474#L147 ~methAndRunningLastTime~0 := 0; 509#L51 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 569#L62-1 [2020-11-29 19:41:05,840 INFO L796 eck$LassoCheckResult]: Loop: 569#L62-1 assume !false; 477#L610 assume test_~splverifierCounter~0 < 4; 478#L611 test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 563#L619 assume !(0 != test_~tmp~5); 494#L619-1 test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 653#L629 assume !(0 != test_~tmp___0~1); 572#L629-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 560#L639 assume 0 != test_~tmp___2~0; 562#L645-2 assume !(0 != ~pumpRunning~0); 546#L781 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 599#L865 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 669#L839-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 533#L813-3 assume !(0 == ~pumpRunning~0); 525#L788 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 665#L712-5 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 629#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 569#L62-1 [2020-11-29 19:41:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 19:41:05,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:05,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464186139] [2020-11-29 19:41:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:05,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:05,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:05,943 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1236370743, now seen corresponding path program 1 times [2020-11-29 19:41:05,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:05,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277804473] [2020-11-29 19:41:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:05,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277804473] [2020-11-29 19:41:05,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:05,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:41:05,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724443659] [2020-11-29 19:41:05,961 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:41:05,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:05,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:05,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:05,962 INFO L87 Difference]: Start difference. First operand 219 states and 322 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-11-29 19:41:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:06,203 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2020-11-29 19:41:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:06,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 218 states and 304 transitions. [2020-11-29 19:41:06,207 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2020-11-29 19:41:06,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 218 states to 218 states and 304 transitions. [2020-11-29 19:41:06,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2020-11-29 19:41:06,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2020-11-29 19:41:06,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 304 transitions. [2020-11-29 19:41:06,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:41:06,213 INFO L691 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2020-11-29 19:41:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 304 transitions. [2020-11-29 19:41:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-29 19:41:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 19:41:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 304 transitions. [2020-11-29 19:41:06,231 INFO L714 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2020-11-29 19:41:06,231 INFO L594 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2020-11-29 19:41:06,231 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:41:06,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 304 transitions. [2020-11-29 19:41:06,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2020-11-29 19:41:06,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:06,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:06,238 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:41:06,240 INFO L853 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] [2020-11-29 19:41:06,240 INFO L794 eck$LassoCheckResult]: Stem: 1056#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 941#L-1 havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 942#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1074#L594 main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 916#L175 assume 0 != main_~tmp~1; 917#L147 ~methAndRunningLastTime~0 := 0; 935#L51 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 934#L62-1 [2020-11-29 19:41:06,242 INFO L796 eck$LassoCheckResult]: Loop: 934#L62-1 assume !false; 927#L610 assume test_~splverifierCounter~0 < 4; 928#L611 test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 1053#L619 assume !(0 != test_~tmp~5); 963#L619-1 test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 982#L629 assume !(0 != test_~tmp___0~1); 943#L629-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 944#L639 assume 0 != test_~tmp___2~0; 1005#L645-2 assume !(0 != ~pumpRunning~0); 1006#L781 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 1035#L865 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 1036#L839-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1013#L813-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1014#L752-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1033#L757-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 964#L984-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 925#L984-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 926#L990-3 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 1064#L817-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1007#L788 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1015#L712-5 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 936#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 934#L62-1 [2020-11-29 19:41:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:06,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 19:41:06,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:06,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677423549] [2020-11-29 19:41:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,386 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:06,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2082517259, now seen corresponding path program 1 times [2020-11-29 19:41:06,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:06,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914943630] [2020-11-29 19:41:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:06,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1345265595, now seen corresponding path program 1 times [2020-11-29 19:41:06,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:06,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444643711] [2020-11-29 19:41:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:06,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:06,531 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:06,741 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-29 19:41:06,873 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-11-29 19:42:31,051 WARN L193 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 19:43:28,357 WARN L193 SmtUtils]: Spent 57.27 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 19:43:28,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:43:28 BoogieIcfgContainer [2020-11-29 19:43:28,553 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:43:28,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:43:28,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:43:28,554 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:43:28,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:04" (3/4) ... [2020-11-29 19:43:28,570 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:43:28,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4bb5d2c8-16fb-4e41-8f62-7f583f8c9680/bin/uautomizer/witness.graphml [2020-11-29 19:43:28,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:43:28,626 INFO L168 Benchmark]: Toolchain (without parser) took 146890.21 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 91.5 MB in the beginning and 76.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,632 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:43:28,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.28 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 86.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.83 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 80.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,633 INFO L168 Benchmark]: Boogie Preprocessor took 83.65 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 76.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,634 INFO L168 Benchmark]: RCFGBuilder took 1744.62 ms. Allocated memory is still 119.5 MB. Free memory was 76.6 MB in the beginning and 72.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,634 INFO L168 Benchmark]: BuchiAutomizer took 144142.92 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 72.0 MB in the beginning and 79.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 77.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,635 INFO L168 Benchmark]: Witness Printer took 71.30 ms. Allocated memory is still 157.3 MB. Free memory was 79.2 MB in the beginning and 76.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:28,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 44.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.28 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 86.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 125.83 ms. Allocated memory is still 119.5 MB. Free memory was 86.5 MB in the beginning and 80.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.65 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 76.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1744.62 ms. Allocated memory is still 119.5 MB. Free memory was 76.6 MB in the beginning and 72.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 144142.92 ms. Allocated memory was 119.5 MB in the beginning and 157.3 MB in the end (delta: 37.7 MB). Free memory was 72.0 MB in the beginning and 79.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 77.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.30 ms. Allocated memory is still 157.3 MB. Free memory was 79.2 MB in the beginning and 76.2 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 218 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 144.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 143.3s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 219 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 1470 SDslu, 83 SDs, 0 SdLazy, 50 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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: 609]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=27186} State at position 1 is {NULL=0, NULL=27208, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ee8a17=0, NULL=27186, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@551c4847=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f748e0f=60, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dde741a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14a3dcf5=0, NULL=0, methaneLevelCritical=0, NULL=27198, tmp=0, NULL=0, NULL=27188, NULL=27211, tmp___1=0, NULL=27195, NULL=0, NULL=27190, cleanupTimeShifts=4, NULL=27209, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@85fbdea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@365335ef=0, waterLevel=1, NULL=0, NULL=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2af6eff9=0, head=0, pumpRunning=0, retValue_acc=1, NULL=27205, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d59cbd1=0, NULL=27206, tmp=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=27187, tmp___0=0, methAndRunningLastTime=0, NULL=27213, NULL=27200, head=0, NULL=0, NULL=27207, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33b7f3a=0, NULL=0, NULL=0, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b46d6f6=0, tmp=0, retValue_acc=0, NULL=0, NULL=27197, NULL=27203, NULL=27196, tmp___0=0, NULL=0, NULL=27214, NULL=27202, NULL=0, NULL=0, NULL=27194, NULL=27191, tmp=0, NULL=27210, NULL=0, NULL=0, systemActive=1, NULL=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=27193, \result=0, NULL=27201, NULL=0, retValue_acc=1, tmp___0=0, NULL=27192, tmp___2=60, tmp=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=27189, NULL=27212, tmp=0, NULL=27199, NULL=27204} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int methAndRunningLastTime ; [L84] int cleanupTimeShifts = 4; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L669] int waterLevel = 1; [L670] int methaneLevelCritical = 0; [L774] int pumpRunning = 0; [L775] int systemActive = 1; [L166] int retValue_acc ; [L167] int tmp ; [L590] int retValue_acc ; [L593] retValue_acc = 1 [L594] return (retValue_acc); [L173] tmp = valid_product() [L175] COND TRUE \read(tmp) [L50] methAndRunningLastTime = 0 [L600] int splverifierCounter ; [L601] int tmp ; [L602] int tmp___0 ; [L603] int tmp___1 ; [L604] int tmp___2 ; [L607] splverifierCounter = 0 Loop: [L609] COND TRUE 1 [L611] COND TRUE splverifierCounter < 4 [L617] tmp = __VERIFIER_nondet_int() [L619] COND FALSE !(\read(tmp)) [L627] tmp___0 = __VERIFIER_nondet_int() [L629] COND FALSE !(\read(tmp___0)) [L637] tmp___2 = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp___2) [L781] COND FALSE !(\read(pumpRunning)) [L788] COND TRUE \read(systemActive) [L862] int tmp ; [L865] COND FALSE !(\read(pumpRunning)) [L836] int tmp ; [L839] COND FALSE !(\read(pumpRunning)) [L810] int tmp ; [L813] COND TRUE ! pumpRunning [L976] int retValue_acc ; [L977] int tmp ; [L978] int tmp___0 ; [L749] int retValue_acc ; [L752] COND TRUE waterLevel < 2 [L753] retValue_acc = 1 [L754] return (retValue_acc); [L982] tmp = isHighWaterSensorDry() [L984] COND TRUE \read(tmp) [L985] tmp___0 = 0 [L989] retValue_acc = tmp___0 [L990] return (retValue_acc); [L815] tmp = isHighWaterLevel() [L817] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L708] int retValue_acc ; [L711] retValue_acc = methaneLevelCritical [L712] return (retValue_acc); [L60] tmp = isMethaneLevelCritical() [L62] COND FALSE !(\read(tmp)) [L78] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...