./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product63.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_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/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 166d50f854e9d57ec06fdf30b85b3272203a25d5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:50:54,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:50:54,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:50:54,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:50:54,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:50:54,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:50:54,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:50:54,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:50:54,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:50:54,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:50:54,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:50:54,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:50:54,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:50:54,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:50:54,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:50:54,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:50:54,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:50:54,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:50:54,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:50:54,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:50:54,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:50:54,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:50:54,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:50:54,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:50:54,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:50:54,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:50:54,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:50:54,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:50:54,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:50:54,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:50:54,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:50:54,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:50:54,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:50:54,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:50:54,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:50:54,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:50:54,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:50:54,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:50:54,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:50:54,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:50:54,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:50:54,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:50:54,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:50:54,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:50:54,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:50:54,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:50:54,271 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:50:54,275 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:50:54,275 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:50:54,275 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:50:54,276 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:50:54,276 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:50:54,277 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:50:54,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:50:54,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:50:54,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:50:54,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:50:54,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:50:54,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:50:54,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:50:54,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:50:54,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:50:54,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:50:54,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:50:54,280 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:50:54,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:50:54,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:50:54,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:50:54,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:50:54,282 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:50:54,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:50:54,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:50:54,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:50:54,285 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:50:54,287 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:50:54,287 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_b6743348-1b33-4541-99ec-18d8f2daeba8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 166d50f854e9d57ec06fdf30b85b3272203a25d5 [2020-11-29 22:50:54,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:50:54,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:50:54,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:50:54,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:50:54,632 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:50:54,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2020-11-29 22:50:54,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/data/221c3095f/6db69176dcf249dab4dfaca6e6d6e7f8/FLAGf4fc9b6b1 [2020-11-29 22:50:55,367 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:50:55,367 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2020-11-29 22:50:55,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/data/221c3095f/6db69176dcf249dab4dfaca6e6d6e7f8/FLAGf4fc9b6b1 [2020-11-29 22:50:55,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/data/221c3095f/6db69176dcf249dab4dfaca6e6d6e7f8 [2020-11-29 22:50:55,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:50:55,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:50:55,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:50:55,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:50:55,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:50:55,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:50:55" (1/1) ... [2020-11-29 22:50:55,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b303583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:55, skipping insertion in model container [2020-11-29 22:50:55,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:50:55" (1/1) ... [2020-11-29 22:50:55,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:50:55,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:50:56,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:50:56,141 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:50:56,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:50:56,330 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:50:56,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56 WrapperNode [2020-11-29 22:50:56,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:50:56,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:50:56,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:50:56,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:50:56,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:50:56,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:50:56,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:50:56,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:50:56,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... [2020-11-29 22:50:56,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:50:56,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:50:56,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:50:56,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:50:56,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/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 22:50:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:50:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:50:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:50:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:50:58,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:50:58,035 INFO L298 CfgBuilder]: Removed 360 assume(true) statements. [2020-11-29 22:50:58,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:50:58 BoogieIcfgContainer [2020-11-29 22:50:58,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:50:58,038 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:50:58,039 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:50:58,042 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:50:58,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:50:58,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:50:55" (1/3) ... [2020-11-29 22:50:58,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@747f866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:50:58, skipping insertion in model container [2020-11-29 22:50:58,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:50:58,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:50:56" (2/3) ... [2020-11-29 22:50:58,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@747f866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:50:58, skipping insertion in model container [2020-11-29 22:50:58,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:50:58,045 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:50:58" (3/3) ... [2020-11-29 22:50:58,046 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2020-11-29 22:50:58,094 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:50:58,094 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:50:58,094 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:50:58,095 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:50:58,095 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:50:58,095 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:50:58,095 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:50:58,095 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:50:58,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-29 22:50:58,148 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-29 22:50:58,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:50:58,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:50:58,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:58,159 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:58,159 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:50:58,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-29 22:50:58,181 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-29 22:50:58,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:50:58,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:50:58,183 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:58,183 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:58,193 INFO L794 eck$LassoCheckResult]: Stem: 81#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 8#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 34#L653true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 54#L661true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 229#L134true assume 0 != main_~tmp~0; 165#L105true ~methAndRunningLastTime~0 := 0; 62#L165true havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 59#L176-1true [2020-11-29 22:50:58,193 INFO L796 eck$LassoCheckResult]: Loop: 59#L176-1true assume !false; 9#L318true assume test_~splverifierCounter~0 < 4; 115#L319true test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 221#L327true assume !(0 != test_~tmp~2); 224#L327-1true test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 143#L337true assume !(0 != test_~tmp___0~1); 144#L337-1true test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 57#L347true assume 0 != test_~tmp___2~0; 162#L353-1true assume !(0 != ~pumpRunning~0); 183#L383true assume !(0 != ~systemActive~0); 137#L390true havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 13#L246-5true __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 64#L176true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 59#L176-1true [2020-11-29 22:50:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:58,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 22:50:58,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:50:58,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873520572] [2020-11-29 22:50:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:50:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:58,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:58,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:58,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:50:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash 17744981, now seen corresponding path program 1 times [2020-11-29 22:50:58,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:50:58,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561665323] [2020-11-29 22:50:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:50:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:58,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:58,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:58,854 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:50:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 851041487, now seen corresponding path program 1 times [2020-11-29 22:50:58,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:50:58,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484077360] [2020-11-29 22:50:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:50:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:50:59,043 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 22:50:59,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484077360] [2020-11-29 22:50:59,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:50:59,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:50:59,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3357] [2020-11-29 22:50:59,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:50:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:50:59,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:50:59,163 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 6 states. [2020-11-29 22:50:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:50:59,555 INFO L93 Difference]: Finished difference Result 502 states and 733 transitions. [2020-11-29 22:50:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:50:59,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 502 states and 733 transitions. [2020-11-29 22:50:59,585 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 327 [2020-11-29 22:50:59,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 502 states to 481 states and 712 transitions. [2020-11-29 22:50:59,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2020-11-29 22:50:59,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2020-11-29 22:50:59,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 712 transitions. [2020-11-29 22:50:59,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:50:59,605 INFO L691 BuchiCegarLoop]: Abstraction has 481 states and 712 transitions. [2020-11-29 22:50:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 712 transitions. [2020-11-29 22:50:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 265. [2020-11-29 22:50:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-11-29 22:50:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 391 transitions. [2020-11-29 22:50:59,651 INFO L714 BuchiCegarLoop]: Abstraction has 265 states and 391 transitions. [2020-11-29 22:50:59,651 INFO L594 BuchiCegarLoop]: Abstraction has 265 states and 391 transitions. [2020-11-29 22:50:59,651 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:50:59,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 265 states and 391 transitions. [2020-11-29 22:50:59,654 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 180 [2020-11-29 22:50:59,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:50:59,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:50:59,655 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:59,656 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 22:50:59,656 INFO L794 eck$LassoCheckResult]: Stem: 881#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 761#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 762#L653 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 816#L661 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 841#L134 assume 0 != main_~tmp~0; 954#L105 ~methAndRunningLastTime~0 := 0; 852#L165 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 787#L176-1 [2020-11-29 22:50:59,656 INFO L796 eck$LassoCheckResult]: Loop: 787#L176-1 assume !false; 763#L318 assume test_~splverifierCounter~0 < 4; 764#L319 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 911#L327 assume !(0 != test_~tmp~2); 937#L327-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 933#L337 assume !(0 != test_~tmp___0~1); 935#L337-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 846#L347 assume 0 != test_~tmp___2~0; 848#L353-1 assume !(0 != ~pumpRunning~0); 861#L383 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 919#L467 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret25, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 920#L441-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 944#L415-3 assume !(0 == ~pumpRunning~0); 923#L390 havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 773#L246-5 __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 774#L176 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 787#L176-1 [2020-11-29 22:50:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:59,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 22:50:59,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:50:59,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528413538] [2020-11-29 22:50:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:50:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:59,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:50:59,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:50:59,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:50:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1227870025, now seen corresponding path program 1 times [2020-11-29 22:50:59,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:50:59,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258723432] [2020-11-29 22:50:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:50:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:50:59,819 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 22:50:59,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258723432] [2020-11-29 22:50:59,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:50:59,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:50:59,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771200214] [2020-11-29 22:50:59,820 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:50:59,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:50:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:50:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:50:59,822 INFO L87 Difference]: Start difference. First operand 265 states and 391 transitions. cyclomatic complexity: 129 Second operand 3 states. [2020-11-29 22:51:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:00,103 INFO L93 Difference]: Finished difference Result 262 states and 365 transitions. [2020-11-29 22:51:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:51:00,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 365 transitions. [2020-11-29 22:51:00,108 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 182 [2020-11-29 22:51:00,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 262 states and 365 transitions. [2020-11-29 22:51:00,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 262 [2020-11-29 22:51:00,111 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 262 [2020-11-29 22:51:00,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 262 states and 365 transitions. [2020-11-29 22:51:00,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:51:00,113 INFO L691 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2020-11-29 22:51:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states and 365 transitions. [2020-11-29 22:51:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-11-29 22:51:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 22:51:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2020-11-29 22:51:00,130 INFO L714 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2020-11-29 22:51:00,130 INFO L594 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2020-11-29 22:51:00,130 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:51:00,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 262 states and 365 transitions. [2020-11-29 22:51:00,146 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 182 [2020-11-29 22:51:00,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:51:00,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:51:00,147 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:00,148 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 22:51:00,149 INFO L794 eck$LassoCheckResult]: Stem: 1443#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1294#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1295#L653 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1360#L661 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1404#L134 assume 0 != main_~tmp~0; 1375#L105 ~methAndRunningLastTime~0 := 0; 1376#L165 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1417#L176-1 [2020-11-29 22:51:00,150 INFO L796 eck$LassoCheckResult]: Loop: 1417#L176-1 assume !false; 1522#L318 assume test_~splverifierCounter~0 < 4; 1523#L319 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 1473#L327 assume !(0 != test_~tmp~2); 1335#L327-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 1326#L337 assume !(0 != test_~tmp___0~1); 1328#L337-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 1329#L347 assume 0 != test_~tmp___2~0; 1368#L353-1 assume !(0 != ~pumpRunning~0); 1371#L383 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1407#L467 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret25, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1358#L441-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1359#L415-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret45, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 1422#L286-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 1423#L291-3 isHighWaterLevel_#t~ret45 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret45;havoc isHighWaterLevel_#t~ret45; 1427#L586-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1428#L586-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1396#L592-3 processEnvironment__wrappee__highWaterSensor_#t~ret24 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret24;havoc processEnvironment__wrappee__highWaterSensor_#t~ret24; 1372#L419-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1357#L390 havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 1306#L246-5 __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 1307#L176 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 1417#L176-1 [2020-11-29 22:51:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:00,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 22:51:00,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:00,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564122085] [2020-11-29 22:51:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1200754987, now seen corresponding path program 1 times [2020-11-29 22:51:00,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:00,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044139857] [2020-11-29 22:51:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:00,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2067939429, now seen corresponding path program 1 times [2020-11-29 22:51:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642715826] [2020-11-29 22:51:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:00,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:00,450 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:00,579 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-29 22:52:35,431 WARN L193 SmtUtils]: Spent 1.58 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 22:53:51,038 WARN L193 SmtUtils]: Spent 1.26 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 22:53:51,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:53:51 BoogieIcfgContainer [2020-11-29 22:53:51,452 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:53:51,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:53:51,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:53:51,453 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:53:51,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:50:58" (3/4) ... [2020-11-29 22:53:51,462 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:53:51,554 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6743348-1b33-4541-99ec-18d8f2daeba8/bin/uautomizer/witness.graphml [2020-11-29 22:53:51,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:53:51,563 INFO L168 Benchmark]: Toolchain (without parser) took 175896.63 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 54.4 MB in the beginning and 60.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,567 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 83.9 MB. Free memory was 41.8 MB in the beginning and 41.8 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:53:51,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 66.1 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.95 ms. Allocated memory is still 100.7 MB. Free memory was 66.1 MB in the beginning and 60.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,569 INFO L168 Benchmark]: Boogie Preprocessor took 111.22 ms. Allocated memory is still 100.7 MB. Free memory was 60.4 MB in the beginning and 56.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,570 INFO L168 Benchmark]: RCFGBuilder took 1473.92 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 61.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,570 INFO L168 Benchmark]: BuchiAutomizer took 173413.87 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 61.5 MB in the beginning and 63.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 82.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,571 INFO L168 Benchmark]: Witness Printer took 108.48 ms. Allocated memory is still 146.8 MB. Free memory was 63.8 MB in the beginning and 60.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:53:51,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 83.9 MB. Free memory was 41.8 MB in the beginning and 41.8 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 54.4 MB in the beginning and 66.1 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.95 ms. Allocated memory is still 100.7 MB. Free memory was 66.1 MB in the beginning and 60.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.22 ms. Allocated memory is still 100.7 MB. Free memory was 60.4 MB in the beginning and 56.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1473.92 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 61.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 173413.87 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 61.5 MB in the beginning and 63.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 82.2 MB. Max. memory is 16.1 GB. * Witness Printer took 108.48 ms. Allocated memory is still 146.8 MB. Free memory was 63.8 MB in the beginning and 60.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 262 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 173.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 172.3s. Construction of modules took 0.4s. 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, 216 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 265 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 573 SDtfs, 1478 SDslu, 1322 SDs, 0 SdLazy, 85 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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: 317]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3522} State at position 1 is {NULL=0, NULL=3522, NULL=3539, NULL=0, NULL=3540, NULL=3548, methaneLevelCritical=0, NULL=3530, retValue_acc=1, tmp=0, NULL=0, NULL=3531, NULL=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=3549, cleanupTimeShifts=4, NULL=3543, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@782ebce2=0, NULL=3529, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@343f8e97=0, waterLevel=1, NULL=0, NULL=0, NULL=3536, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c53f2a4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b92a73f=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1782b45=56, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=3527, NULL=0, tmp=1, NULL=0, NULL=3547, tmp___0=0, methAndRunningLastTime=0, NULL=3532, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e78fc30=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@391c8bcc=0, tmp=0, NULL=3534, NULL=3526, tmp=0, NULL=3524, retValue_acc=0, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@373adbc4=0, NULL=3541, tmp___0=0, NULL=0, NULL=0, NULL=3551, NULL=0, NULL=0, tmp=0, NULL=3533, NULL=0, systemActive=1, NULL=3545, NULL=0, \result=0, NULL=3525, \result=0, NULL=0, NULL=3546, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1791a09d=0, NULL=0, tmp___0=0, NULL=3538, NULL=3537, NULL=3523, tmp___2=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e1f7e0e=0, splverifierCounter=0, NULL=0, \result=0, NULL=3528, NULL=3550, NULL=3542, tmp=0, NULL=3535, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1429de6c=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L159] int methAndRunningLastTime ; [L203] int waterLevel = 1; [L204] int methaneLevelCritical = 0; [L376] int pumpRunning = 0; [L377] int systemActive = 1; [L835] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L125] int retValue_acc ; [L126] int tmp ; [L657] int retValue_acc ; [L660] retValue_acc = 1 [L661] return (retValue_acc); [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L164] methAndRunningLastTime = 0 [L308] int splverifierCounter ; [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L312] int tmp___2 ; [L315] splverifierCounter = 0 Loop: [L317] COND TRUE 1 [L319] COND TRUE splverifierCounter < 4 [L325] tmp = __VERIFIER_nondet_int() [L327] COND FALSE !(\read(tmp)) [L335] tmp___0 = __VERIFIER_nondet_int() [L337] COND FALSE !(\read(tmp___0)) [L345] tmp___2 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___2) [L383] COND FALSE !(\read(pumpRunning)) [L390] COND TRUE \read(systemActive) [L464] int tmp ; [L467] COND FALSE !(\read(pumpRunning)) [L438] int tmp ; [L441] COND FALSE !(\read(pumpRunning)) [L412] int tmp ; [L415] COND TRUE ! pumpRunning [L578] int retValue_acc ; [L579] int tmp ; [L580] int tmp___0 ; [L283] int retValue_acc ; [L286] COND TRUE waterLevel < 2 [L287] retValue_acc = 1 [L288] return (retValue_acc); [L584] tmp = isHighWaterSensorDry() [L586] COND TRUE \read(tmp) [L587] tmp___0 = 0 [L591] retValue_acc = tmp___0 [L592] return (retValue_acc); [L417] tmp = isHighWaterLevel() [L419] COND FALSE !(\read(tmp)) [L169] int tmp ; [L170] int tmp___0 ; [L242] int retValue_acc ; [L245] retValue_acc = methaneLevelCritical [L246] return (retValue_acc); [L174] tmp = isMethaneLevelCritical() [L176] COND FALSE !(\read(tmp)) [L192] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...