./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product37.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_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/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 cf3a2246a69bfa51c25534a65289619c12c7abe9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:18:10,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:18:10,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:18:10,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:18:10,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:18:10,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:18:10,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:18:10,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:18:10,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:18:10,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:18:10,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:18:10,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:18:10,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:18:10,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:18:10,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:18:10,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:18:10,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:18:10,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:18:10,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:18:10,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:18:10,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:18:10,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:18:10,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:18:10,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:18:10,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:18:10,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:18:10,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:18:10,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:18:10,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:18:10,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:18:10,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:18:10,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:18:10,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:18:10,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:18:10,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:18:10,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:18:10,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:18:10,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:18:10,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:18:10,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:18:10,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:18:10,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:18:10,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:18:10,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:18:10,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:18:10,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:18:10,264 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:18:10,264 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:18:10,264 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:18:10,265 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:18:10,265 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:18:10,265 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:18:10,265 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:18:10,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:18:10,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:18:10,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:18:10,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:18:10,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:18:10,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:18:10,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:18:10,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:18:10,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:18:10,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:18:10,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:18:10,268 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:18:10,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:18:10,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:18:10,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:18:10,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:18:10,269 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:18:10,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:18:10,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:18:10,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:18:10,270 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:18:10,271 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:18:10,271 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_6d43c772-ecbf-4c35-9c68-23232e8b261a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf3a2246a69bfa51c25534a65289619c12c7abe9 [2020-11-29 22:18:10,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:18:10,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:18:10,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:18:10,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:18:10,635 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:18:10,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2020-11-29 22:18:10,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/data/b8c240a78/f782d9343a9d4e5fa7d03e0b6f62718a/FLAG05d0340d9 [2020-11-29 22:18:11,218 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:18:11,219 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/sv-benchmarks/c/product-lines/minepump_spec5_product37.cil.c [2020-11-29 22:18:11,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/data/b8c240a78/f782d9343a9d4e5fa7d03e0b6f62718a/FLAG05d0340d9 [2020-11-29 22:18:11,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/data/b8c240a78/f782d9343a9d4e5fa7d03e0b6f62718a [2020-11-29 22:18:11,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:18:11,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:18:11,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:18:11,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:18:11,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:18:11,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:18:11" (1/1) ... [2020-11-29 22:18:11,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d5694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:11, skipping insertion in model container [2020-11-29 22:18:11,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:18:11" (1/1) ... [2020-11-29 22:18:11,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:18:11,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:18:11,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:18:11,955 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:18:12,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:18:12,066 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:18:12,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12 WrapperNode [2020-11-29 22:18:12,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:18:12,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:18:12,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:18:12,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:18:12,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:18:12,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:18:12,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:18:12,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:18:12,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... [2020-11-29 22:18:12,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:18:12,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:18:12,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:18:12,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:18:12,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/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 22:18:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:18:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:18:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:18:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:18:13,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:18:13,369 INFO L298 CfgBuilder]: Removed 176 assume(true) statements. [2020-11-29 22:18:13,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:13 BoogieIcfgContainer [2020-11-29 22:18:13,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:18:13,376 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:18:13,377 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:18:13,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:18:13,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:18:13,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:18:11" (1/3) ... [2020-11-29 22:18:13,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51552bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:18:13, skipping insertion in model container [2020-11-29 22:18:13,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:18:13,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:12" (2/3) ... [2020-11-29 22:18:13,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51552bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:18:13, skipping insertion in model container [2020-11-29 22:18:13,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:18:13,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:13" (3/3) ... [2020-11-29 22:18:13,387 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-11-29 22:18:13,438 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:18:13,439 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:18:13,439 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:18:13,439 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:18:13,439 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:18:13,440 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:18:13,440 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:18:13,440 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:18:13,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states. [2020-11-29 22:18:13,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2020-11-29 22:18:13,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:18:13,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:18:13,496 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:13,496 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:13,496 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:18:13,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states. [2020-11-29 22:18:13,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2020-11-29 22:18:13,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:18:13,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:18:13,505 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:13,505 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:13,511 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 16#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 45#L576true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 47#L584true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 91#L283true assume 0 != main_~tmp~1; 17#L255true ~switchedOnBeforeTS~0 := 0; 108#L151true havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 29#L172-1true [2020-11-29 22:18:13,511 INFO L796 eck$LassoCheckResult]: Loop: 29#L172-1true assume !false; 117#L500true assume test_~splverifierCounter~0 < 4; 72#L501true test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 78#L509true assume !(0 != test_~tmp~5); 81#L509-1true test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 20#L519true assume !(0 != test_~tmp___0~2); 22#L519-1true test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 50#L529true assume 0 != test_~tmp___2~0; 37#L535-2true havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 93#L429true __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 30#L161true assume !(0 != ~pumpRunning~0); 18#L318true assume !(0 != ~systemActive~0); 67#L325true havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 58#L124true __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 31#L172true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 29#L172-1true [2020-11-29 22:18:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:13,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 22:18:13,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:13,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689622095] [2020-11-29 22:18:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:13,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:13,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:14,042 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:14,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash 95890030, now seen corresponding path program 1 times [2020-11-29 22:18:14,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:14,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343202448] [2020-11-29 22:18:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:14,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:14,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:14,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:14,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2029915240, now seen corresponding path program 1 times [2020-11-29 22:18:14,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:14,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927771419] [2020-11-29 22:18:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:14,211 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 22:18:14,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927771419] [2020-11-29 22:18:14,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:14,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:18:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175320926] [2020-11-29 22:18:14,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:18:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:18:14,400 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 6 states. [2020-11-29 22:18:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:14,650 INFO L93 Difference]: Finished difference Result 117 states and 166 transitions. [2020-11-29 22:18:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:18:14,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 166 transitions. [2020-11-29 22:18:14,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2020-11-29 22:18:14,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 110 states and 159 transitions. [2020-11-29 22:18:14,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2020-11-29 22:18:14,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2020-11-29 22:18:14,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 159 transitions. [2020-11-29 22:18:14,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:18:14,668 INFO L691 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2020-11-29 22:18:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 159 transitions. [2020-11-29 22:18:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-29 22:18:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-29 22:18:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 159 transitions. [2020-11-29 22:18:14,705 INFO L714 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2020-11-29 22:18:14,705 INFO L594 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2020-11-29 22:18:14,705 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:18:14,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 159 transitions. [2020-11-29 22:18:14,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2020-11-29 22:18:14,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:18:14,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:18:14,709 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:14,710 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:14,710 INFO L794 eck$LassoCheckResult]: Stem: 337#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 281#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 282#L576 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 318#L584 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 321#L283 assume 0 != main_~tmp~1; 283#L255 ~switchedOnBeforeTS~0 := 0; 284#L151 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 298#L172-1 [2020-11-29 22:18:14,710 INFO L796 eck$LassoCheckResult]: Loop: 298#L172-1 assume !false; 299#L500 assume test_~splverifierCounter~0 < 4; 334#L501 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 335#L509 assume !(0 != test_~tmp~5); 314#L509-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 287#L519 assume !(0 != test_~tmp___0~2); 289#L519-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 291#L529 assume 0 != test_~tmp___2~0; 309#L535-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 311#L429 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 300#L161 assume !(0 != ~pumpRunning~0); 285#L318 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 259#L376 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 260#L350-1 assume !(0 == ~pumpRunning~0); 265#L325 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 330#L124 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 302#L172 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 298#L172-1 [2020-11-29 22:18:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:14,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 22:18:14,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:14,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280801805] [2020-11-29 22:18:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:14,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:14,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:14,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:14,871 INFO L82 PathProgramCache]: Analyzing trace with hash -484283835, now seen corresponding path program 1 times [2020-11-29 22:18:14,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:14,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764662863] [2020-11-29 22:18:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:14,904 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 22:18:14,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764662863] [2020-11-29 22:18:14,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:14,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:18:14,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256210677] [2020-11-29 22:18:14,906 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:18:14,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:14,907 INFO L87 Difference]: Start difference. First operand 110 states and 159 transitions. cyclomatic complexity: 51 Second operand 3 states. [2020-11-29 22:18:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:15,038 INFO L93 Difference]: Finished difference Result 159 states and 218 transitions. [2020-11-29 22:18:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:15,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 218 transitions. [2020-11-29 22:18:15,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2020-11-29 22:18:15,046 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 218 transitions. [2020-11-29 22:18:15,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2020-11-29 22:18:15,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2020-11-29 22:18:15,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 218 transitions. [2020-11-29 22:18:15,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:18:15,048 INFO L691 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2020-11-29 22:18:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 218 transitions. [2020-11-29 22:18:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-11-29 22:18:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-29 22:18:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2020-11-29 22:18:15,059 INFO L714 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2020-11-29 22:18:15,059 INFO L594 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2020-11-29 22:18:15,059 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:18:15,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 218 transitions. [2020-11-29 22:18:15,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2020-11-29 22:18:15,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:18:15,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:18:15,062 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:15,063 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, 1] [2020-11-29 22:18:15,063 INFO L794 eck$LassoCheckResult]: Stem: 616#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 555#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 556#L576 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 591#L584 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 594#L283 assume 0 != main_~tmp~1; 557#L255 ~switchedOnBeforeTS~0 := 0; 558#L151 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 573#L172-1 [2020-11-29 22:18:15,063 INFO L796 eck$LassoCheckResult]: Loop: 573#L172-1 assume !false; 574#L500 assume test_~splverifierCounter~0 < 4; 613#L501 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 614#L509 assume !(0 != test_~tmp~5); 588#L509-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 561#L519 assume !(0 != test_~tmp___0~2); 563#L519-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 565#L529 assume 0 != test_~tmp___2~0; 583#L535-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 585#L429 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 575#L161 assume !(0 != ~pumpRunning~0); 559#L318 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 534#L376 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 535#L350-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 595#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 623#L137-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 635#L478-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 644#L478-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 628#L484-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 545#L354-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 537#L325 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 606#L124 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 576#L172 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 573#L172-1 [2020-11-29 22:18:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 22:18:15,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:15,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029096082] [2020-11-29 22:18:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:15,216 INFO L82 PathProgramCache]: Analyzing trace with hash 459590417, now seen corresponding path program 1 times [2020-11-29 22:18:15,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:15,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996124595] [2020-11-29 22:18:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:15,265 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 22:18:15,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996124595] [2020-11-29 22:18:15,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:15,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:18:15,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92380708] [2020-11-29 22:18:15,266 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:18:15,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:18:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:18:15,267 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. cyclomatic complexity: 61 Second operand 5 states. [2020-11-29 22:18:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:15,523 INFO L93 Difference]: Finished difference Result 437 states and 587 transitions. [2020-11-29 22:18:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:18:15,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 587 transitions. [2020-11-29 22:18:15,529 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 283 [2020-11-29 22:18:15,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 437 states and 587 transitions. [2020-11-29 22:18:15,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 437 [2020-11-29 22:18:15,544 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 437 [2020-11-29 22:18:15,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 587 transitions. [2020-11-29 22:18:15,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:18:15,549 INFO L691 BuchiCegarLoop]: Abstraction has 437 states and 587 transitions. [2020-11-29 22:18:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 587 transitions. [2020-11-29 22:18:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 311. [2020-11-29 22:18:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-11-29 22:18:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 415 transitions. [2020-11-29 22:18:15,581 INFO L714 BuchiCegarLoop]: Abstraction has 311 states and 415 transitions. [2020-11-29 22:18:15,582 INFO L594 BuchiCegarLoop]: Abstraction has 311 states and 415 transitions. [2020-11-29 22:18:15,589 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:18:15,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 311 states and 415 transitions. [2020-11-29 22:18:15,592 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 220 [2020-11-29 22:18:15,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:18:15,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:18:15,595 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:15,595 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, 1, 1, 1] [2020-11-29 22:18:15,595 INFO L794 eck$LassoCheckResult]: Stem: 1230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1167#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~3, main_~tmp~1;havoc main_~retValue_acc~3;havoc main_~tmp~1; 1168#L576 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1205#L584 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 1208#L283 assume 0 != main_~tmp~1; 1169#L255 ~switchedOnBeforeTS~0 := 0; 1170#L151 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1187#L172-1 [2020-11-29 22:18:15,597 INFO L796 eck$LassoCheckResult]: Loop: 1187#L172-1 assume !false; 1188#L500 assume test_~splverifierCounter~0 < 4; 1226#L501 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 1227#L509 assume !(0 != test_~tmp~5); 1232#L509-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 1173#L519 assume !(0 != test_~tmp___0~2); 1175#L519-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 1178#L529 assume 0 != test_~tmp___2~0; 1197#L535-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1199#L429 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 1189#L161 assume !(0 != ~pumpRunning~0); 1171#L318 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1146#L376 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1147#L350-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1209#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1237#L137-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 1416#L478-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1415#L478-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1414#L484-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1157#L354-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1149#L325 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1412#L124 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 1411#L172 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1249#L429-1 __utac_acc__Specification5_spec__3_#t~ret19 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret19;havoc __utac_acc__Specification5_spec__3_#t~ret19; 1223#L176 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1187#L172-1 [2020-11-29 22:18:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 22:18:15,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:15,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136524958] [2020-11-29 22:18:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,694 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:15,696 INFO L82 PathProgramCache]: Analyzing trace with hash -715255060, now seen corresponding path program 1 times [2020-11-29 22:18:15,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:15,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419912130] [2020-11-29 22:18:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,740 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash -778681242, now seen corresponding path program 1 times [2020-11-29 22:18:15,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:15,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208919982] [2020-11-29 22:18:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:18:15,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:18:15,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:18:16,003 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-29 22:19:34,505 WARN L193 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 22:20:28,512 WARN L193 SmtUtils]: Spent 53.99 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 22:20:28,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:20:28 BoogieIcfgContainer [2020-11-29 22:20:28,873 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:20:28,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:20:28,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:20:28,878 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:20:28,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:13" (3/4) ... [2020-11-29 22:20:28,882 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:20:28,952 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d43c772-ecbf-4c35-9c68-23232e8b261a/bin/uautomizer/witness.graphml [2020-11-29 22:20:28,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:20:28,956 INFO L168 Benchmark]: Toolchain (without parser) took 137409.40 ms. Allocated memory was 79.7 MB in the beginning and 167.8 MB in the end (delta: 88.1 MB). Free memory was 58.0 MB in the beginning and 69.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 75.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,956 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 79.7 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:20:28,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.10 ms. Allocated memory is still 79.7 MB. Free memory was 57.8 MB in the beginning and 46.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.83 ms. Allocated memory is still 79.7 MB. Free memory was 46.1 MB in the beginning and 42.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,958 INFO L168 Benchmark]: Boogie Preprocessor took 42.63 ms. Allocated memory is still 79.7 MB. Free memory was 42.5 MB in the beginning and 40.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,958 INFO L168 Benchmark]: RCFGBuilder took 1142.73 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 39.8 MB in the beginning and 58.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,959 INFO L168 Benchmark]: BuchiAutomizer took 135497.18 ms. Allocated memory was 102.8 MB in the beginning and 167.8 MB in the end (delta: 65.0 MB). Free memory was 58.4 MB in the beginning and 71.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 87.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,959 INFO L168 Benchmark]: Witness Printer took 80.36 ms. Allocated memory is still 167.8 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:28,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 79.7 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.10 ms. Allocated memory is still 79.7 MB. Free memory was 57.8 MB in the beginning and 46.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.83 ms. Allocated memory is still 79.7 MB. Free memory was 46.1 MB in the beginning and 42.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.63 ms. Allocated memory is still 79.7 MB. Free memory was 42.5 MB in the beginning and 40.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1142.73 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 39.8 MB in the beginning and 58.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 135497.18 ms. Allocated memory was 102.8 MB in the beginning and 167.8 MB in the end (delta: 65.0 MB). Free memory was 58.4 MB in the beginning and 71.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 87.8 MB. Max. memory is 16.1 GB. * Witness Printer took 80.36 ms. Allocated memory is still 167.8 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 311 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 135.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 134.5s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 126 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 311 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 1109 SDslu, 567 SDs, 0 SdLazy, 127 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 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: 499]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=10581} State at position 1 is {NULL=0, NULL=0, NULL=10609, NULL=10581, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6012d721=0, NULL=10585, NULL=10603, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44d87947=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ba6e72d=0, tmp=0, NULL=0, NULL=10583, NULL=10594, NULL=0, tmp___1=0, NULL=10593, retValue_acc=0, NULL=0, NULL=10590, cleanupTimeShifts=4, NULL=10605, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75936411=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f4a118d=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@696bf37b=0, waterLevel=1, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=10584, tmp=1, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=10588, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=10586, NULL=10604, tmp=0, head=0, NULL=10596, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@222bedd4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12937e23=0, retValue_acc=0, NULL=10607, NULL=10597, tmp___0=0, NULL=0, NULL=0, NULL=10598, NULL=0, tmp=1, NULL=0, NULL=0, switchedOnBeforeTS=0, NULL=10592, NULL=10591, tmp=0, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=10587, \result=1, NULL=0, NULL=10595, \result=0, NULL=0, NULL=10608, tmp___0=0, \result=0, NULL=10602, NULL=0, NULL=10600, NULL=10582, retValue_acc=1, NULL=10606, tmp___2=64, splverifierCounter=0, NULL=0, NULL=10599, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f706bf=0, NULL=10601, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63ab2e71=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75f252d6=0, NULL=10589, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L145] int switchedOnBeforeTS ; [L194] int cleanupTimeShifts = 4; [L308] int pumpRunning = 0; [L309] int systemActive = 1; [L758] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L274] int retValue_acc ; [L275] int tmp ; [L580] int retValue_acc ; [L583] retValue_acc = 1 [L584] return (retValue_acc); [L281] tmp = valid_product() [L283] COND TRUE \read(tmp) [L150] switchedOnBeforeTS = 0 [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 Loop: [L499] COND TRUE 1 [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L159] switchedOnBeforeTS = isPumpRunning() [L318] COND FALSE !(\read(pumpRunning)) [L325] COND TRUE \read(systemActive) [L373] int tmp ; [L376] COND FALSE !(\read(pumpRunning)) [L347] int tmp ; [L350] COND TRUE ! pumpRunning [L470] int retValue_acc ; [L471] int tmp ; [L472] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L476] tmp = isHighWaterSensorDry() [L478] COND TRUE \read(tmp) [L479] tmp___0 = 0 [L483] retValue_acc = tmp___0 [L484] return (retValue_acc); [L352] tmp = isHighWaterLevel() [L354] COND FALSE !(\read(tmp)) [L165] int tmp ; [L166] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L170] tmp = getWaterLevel() [L172] COND TRUE tmp != 2 [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L174] tmp___0 = isPumpRunning() [L176] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...