./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.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_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/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 99eb1f4611436659e2be1d9c659805af4afb51d1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:40:11,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:40:11,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:40:11,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:40:11,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:40:11,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:40:11,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:40:11,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:40:11,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:40:11,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:40:11,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:40:11,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:40:11,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:40:11,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:40:11,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:40:11,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:40:11,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:40:11,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:40:11,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:40:11,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:40:11,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:40:11,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:40:11,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:40:11,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:40:11,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:40:11,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:40:11,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:40:11,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:40:11,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:40:11,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:40:11,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:40:11,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:40:11,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:40:11,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:40:11,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:40:11,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:40:11,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:40:11,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:40:11,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:40:11,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:40:11,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:40:11,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:40:11,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:40:11,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:40:11,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:40:11,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:40:11,553 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:40:11,553 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:40:11,554 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:40:11,554 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:40:11,555 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:40:11,555 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:40:11,557 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:40:11,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:40:11,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:40:11,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:40:11,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:40:11,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:40:11,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:40:11,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:40:11,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:40:11,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:40:11,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:40:11,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:40:11,561 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:40:11,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:40:11,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:40:11,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:40:11,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:40:11,563 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:40:11,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:40:11,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:40:11,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:40:11,565 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:40:11,567 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:40:11,567 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_42afec1a-f055-41cb-b149-9fc0e4074d08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99eb1f4611436659e2be1d9c659805af4afb51d1 [2020-11-29 19:40:11,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:40:12,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:40:12,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:40:12,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:40:12,056 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:40:12,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2020-11-29 19:40:12,166 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/data/cfd613fd2/0249de335db04108bf5cac7a8a2a5eed/FLAGc45725d78 [2020-11-29 19:40:12,944 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:40:12,945 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2020-11-29 19:40:12,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/data/cfd613fd2/0249de335db04108bf5cac7a8a2a5eed/FLAGc45725d78 [2020-11-29 19:40:13,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/data/cfd613fd2/0249de335db04108bf5cac7a8a2a5eed [2020-11-29 19:40:13,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:40:13,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:40:13,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:40:13,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:40:13,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:40:13,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:40:13" (1/1) ... [2020-11-29 19:40:13,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c06939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:13, skipping insertion in model container [2020-11-29 19:40:13,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:40:13" (1/1) ... [2020-11-29 19:40:13,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:40:13,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:40:13,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:40:13,845 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:40:14,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:40:14,088 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:40:14,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14 WrapperNode [2020-11-29 19:40:14,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:40:14,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:40:14,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:40:14,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:40:14,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:40:14,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:40:14,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:40:14,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:40:14,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... [2020-11-29 19:40:14,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:40:14,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:40:14,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:40:14,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:40:14,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:40:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:40:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:40:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:40:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:40:16,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:40:16,257 INFO L298 CfgBuilder]: Removed 374 assume(true) statements. [2020-11-29 19:40:16,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:40:16 BoogieIcfgContainer [2020-11-29 19:40:16,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:40:16,261 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:40:16,261 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:40:16,266 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:40:16,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:40:16,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:40:13" (1/3) ... [2020-11-29 19:40:16,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53ac836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:40:16, skipping insertion in model container [2020-11-29 19:40:16,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:40:16,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:40:14" (2/3) ... [2020-11-29 19:40:16,270 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53ac836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:40:16, skipping insertion in model container [2020-11-29 19:40:16,271 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:40:16,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:40:16" (3/3) ... [2020-11-29 19:40:16,273 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2020-11-29 19:40:16,324 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:40:16,325 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:40:16,325 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:40:16,325 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:40:16,325 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:40:16,325 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:40:16,326 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:40:16,326 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:40:16,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states. [2020-11-29 19:40:16,394 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 155 [2020-11-29 19:40:16,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:40:16,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:40:16,406 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:16,406 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:16,406 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:40:16,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states. [2020-11-29 19:40:16,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 155 [2020-11-29 19:40:16,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:40:16,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:40:16,429 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:16,429 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:16,437 INFO L794 eck$LassoCheckResult]: Stem: 58#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);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~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);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);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 9#L-1true havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 70#L677true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 200#L685true main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 4#L632true assume 0 != main_~tmp~8; 85#L605true ~switchedOnBeforeTS~0 := 0; 122#L51true havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 151#L72-1true [2020-11-29 19:40:16,437 INFO L796 eck$LassoCheckResult]: Loop: 151#L72-1true assume !false; 144#L111true assume test_~splverifierCounter~0 < 4; 214#L112true test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 18#L120true assume !(0 != test_~tmp~1); 15#L120-1true test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 31#L130true assume !(0 != test_~tmp___0~1); 29#L130-1true test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 206#L140true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 79#L148-1true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 80#L341true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 152#L61true assume !(0 != ~pumpRunning~0); 47#L187true assume !(0 != ~systemActive~0); 139#L194true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __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~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 156#L518true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 153#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 151#L72-1true [2020-11-29 19:40:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 19:40:16,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:16,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359828483] [2020-11-29 19:40:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:16,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:16,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:17,072 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash 681690680, now seen corresponding path program 1 times [2020-11-29 19:40:17,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:17,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475852536] [2020-11-29 19:40:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:40:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:40:17,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475852536] [2020-11-29 19:40:17,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:40:17,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:40:17,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604511402] [2020-11-29 19:40:17,205 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:40:17,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:40:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:40:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:40:17,226 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2020-11-29 19:40:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:40:17,376 INFO L93 Difference]: Finished difference Result 459 states and 671 transitions. [2020-11-29 19:40:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:40:17,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 459 states and 671 transitions. [2020-11-29 19:40:17,424 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 302 [2020-11-29 19:40:17,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 459 states to 445 states and 656 transitions. [2020-11-29 19:40:17,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 445 [2020-11-29 19:40:17,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 445 [2020-11-29 19:40:17,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 656 transitions. [2020-11-29 19:40:17,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:40:17,462 INFO L691 BuchiCegarLoop]: Abstraction has 445 states and 656 transitions. [2020-11-29 19:40:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 656 transitions. [2020-11-29 19:40:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 443. [2020-11-29 19:40:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-11-29 19:40:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 653 transitions. [2020-11-29 19:40:17,550 INFO L714 BuchiCegarLoop]: Abstraction has 443 states and 653 transitions. [2020-11-29 19:40:17,550 INFO L594 BuchiCegarLoop]: Abstraction has 443 states and 653 transitions. [2020-11-29 19:40:17,551 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:40:17,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 443 states and 653 transitions. [2020-11-29 19:40:17,556 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 300 [2020-11-29 19:40:17,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:40:17,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:40:17,558 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:17,558 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:17,558 INFO L794 eck$LassoCheckResult]: Stem: 794#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);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~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);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);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 714#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 715#L677 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 809#L685 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 707#L632 assume 0 != main_~tmp~8; 708#L605 ~switchedOnBeforeTS~0 := 0; 829#L51 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 877#L72-1 [2020-11-29 19:40:17,559 INFO L796 eck$LassoCheckResult]: Loop: 877#L72-1 assume !false; 917#L111 assume test_~splverifierCounter~0 < 4; 966#L112 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 732#L120 assume !(0 != test_~tmp~1); 727#L120-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 728#L130 assume !(0 != test_~tmp___0~1); 750#L130-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 751#L140 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 956#L148-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 980#L341 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 918#L61 assume !(0 != ~pumpRunning~0); 779#L187 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 780#L271 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 1021#L245-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 734#L219-3 assume !(0 == ~pumpRunning~0); 706#L194 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __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~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 921#L518 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 922#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 877#L72-1 [2020-11-29 19:40:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 19:40:17,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:17,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638106027] [2020-11-29 19:40:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:17,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:17,724 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:17,766 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1785171477, now seen corresponding path program 1 times [2020-11-29 19:40:17,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:17,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181603946] [2020-11-29 19:40:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:40:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:40:17,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181603946] [2020-11-29 19:40:17,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:40:17,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:40:17,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472649428] [2020-11-29 19:40:17,811 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:40:17,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:40:17,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:40:17,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:40:17,813 INFO L87 Difference]: Start difference. First operand 443 states and 653 transitions. cyclomatic complexity: 213 Second operand 3 states. [2020-11-29 19:40:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:40:18,074 INFO L93 Difference]: Finished difference Result 452 states and 631 transitions. [2020-11-29 19:40:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:40:18,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 452 states and 631 transitions. [2020-11-29 19:40:18,082 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 315 [2020-11-29 19:40:18,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 452 states to 452 states and 631 transitions. [2020-11-29 19:40:18,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 452 [2020-11-29 19:40:18,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 452 [2020-11-29 19:40:18,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 452 states and 631 transitions. [2020-11-29 19:40:18,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:40:18,104 INFO L691 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2020-11-29 19:40:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states and 631 transitions. [2020-11-29 19:40:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2020-11-29 19:40:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-11-29 19:40:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 631 transitions. [2020-11-29 19:40:18,186 INFO L714 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2020-11-29 19:40:18,186 INFO L594 BuchiCegarLoop]: Abstraction has 452 states and 631 transitions. [2020-11-29 19:40:18,186 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:40:18,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 452 states and 631 transitions. [2020-11-29 19:40:18,191 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 315 [2020-11-29 19:40:18,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:40:18,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:40:18,192 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:18,193 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] [2020-11-29 19:40:18,194 INFO L794 eck$LassoCheckResult]: Stem: 1761#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);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~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);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);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1639#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 1640#L677 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1772#L685 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 1613#L632 assume 0 != main_~tmp~8; 1614#L605 ~switchedOnBeforeTS~0 := 0; 1632#L51 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1633#L72-1 [2020-11-29 19:40:18,195 INFO L796 eck$LassoCheckResult]: Loop: 1633#L72-1 assume !false; 2018#L111 assume test_~splverifierCounter~0 < 4; 1824#L112 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 1823#L120 assume !(0 != test_~tmp~1); 1821#L120-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 1820#L130 assume !(0 != test_~tmp___0~1); 1818#L130-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 1817#L140 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1781#L148-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1782#L341 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1693#L61 assume !(0 != ~pumpRunning~0); 1694#L187 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 1752#L271 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 1999#L245-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 2012#L219-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret35, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2011#L526-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2010#L531-3 isHighWaterLevel_#t~ret35 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret35;havoc isHighWaterLevel_#t~ret35; 2009#L390-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~2 := 0; 2008#L390-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2007#L396-3 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 2006#L223-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1976#L194 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __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~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 2021#L518 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 2019#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 1633#L72-1 [2020-11-29 19:40:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 19:40:18,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:18,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808495883] [2020-11-29 19:40:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:18,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:18,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:18,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:18,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1255643607, now seen corresponding path program 1 times [2020-11-29 19:40:18,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:18,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832459292] [2020-11-29 19:40:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:40:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:40:18,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832459292] [2020-11-29 19:40:18,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:40:18,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:40:18,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263903414] [2020-11-29 19:40:18,408 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:40:18,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:40:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:40:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:40:18,410 INFO L87 Difference]: Start difference. First operand 452 states and 631 transitions. cyclomatic complexity: 182 Second operand 5 states. [2020-11-29 19:40:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:40:18,756 INFO L93 Difference]: Finished difference Result 1322 states and 1805 transitions. [2020-11-29 19:40:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:40:18,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1322 states and 1805 transitions. [2020-11-29 19:40:18,776 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 851 [2020-11-29 19:40:18,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1322 states to 1322 states and 1805 transitions. [2020-11-29 19:40:18,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1322 [2020-11-29 19:40:18,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1322 [2020-11-29 19:40:18,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1805 transitions. [2020-11-29 19:40:18,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:40:18,800 INFO L691 BuchiCegarLoop]: Abstraction has 1322 states and 1805 transitions. [2020-11-29 19:40:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1805 transitions. [2020-11-29 19:40:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 897. [2020-11-29 19:40:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-11-29 19:40:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1221 transitions. [2020-11-29 19:40:18,844 INFO L714 BuchiCegarLoop]: Abstraction has 897 states and 1221 transitions. [2020-11-29 19:40:18,844 INFO L594 BuchiCegarLoop]: Abstraction has 897 states and 1221 transitions. [2020-11-29 19:40:18,844 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:40:18,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 897 states and 1221 transitions. [2020-11-29 19:40:18,854 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 630 [2020-11-29 19:40:18,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:40:18,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:40:18,858 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:40:18,858 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, 1] [2020-11-29 19:40:18,861 INFO L794 eck$LassoCheckResult]: Stem: 3561#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~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);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~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);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);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3429#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 3430#L677 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 3573#L685 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 3403#L632 assume 0 != main_~tmp~8; 3404#L605 ~switchedOnBeforeTS~0 := 0; 3422#L51 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3423#L72-1 [2020-11-29 19:40:18,861 INFO L796 eck$LassoCheckResult]: Loop: 3423#L72-1 assume !false; 3909#L111 assume test_~splverifierCounter~0 < 4; 3907#L112 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 3905#L120 assume !(0 != test_~tmp~1); 3440#L120-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 3441#L130 assume !(0 != test_~tmp___0~1); 3495#L130-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 3496#L140 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3587#L148-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 4279#L341 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 3486#L61 assume !(0 != ~pumpRunning~0); 3487#L187 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 3453#L271 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~3;havoc processEnvironment__wrappee__methaneQuery_~tmp~3; 3454#L245-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 3448#L219-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret35, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 3449#L526-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 3524#L531-3 isHighWaterLevel_#t~ret35 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret35;havoc isHighWaterLevel_#t~ret35; 3570#L390-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~2 := 0; 3590#L390-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 3559#L396-3 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 3520#L223-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 3409#L194 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __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~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 3463#L518 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 3488#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 3489#L341-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 3557#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 3423#L72-1 [2020-11-29 19:40:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 19:40:18,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:18,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158917219] [2020-11-29 19:40:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:18,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:19,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -212312782, now seen corresponding path program 1 times [2020-11-29 19:40:19,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962780943] [2020-11-29 19:40:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:19,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:19,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:40:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2116442872, now seen corresponding path program 1 times [2020-11-29 19:40:19,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:40:19,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753537438] [2020-11-29 19:40:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:40:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:19,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:40:19,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:40:19,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:40:19,466 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-11-29 19:40:19,603 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 19:42:02,686 WARN L193 SmtUtils]: Spent 1.72 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 19:43:05,755 WARN L193 SmtUtils]: Spent 1.05 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 19:43:06,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:43:06 BoogieIcfgContainer [2020-11-29 19:43:06,085 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:43:06,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:43:06,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:43:06,086 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:43:06,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:40:16" (3/4) ... [2020-11-29 19:43:06,090 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:43:06,180 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42afec1a-f055-41cb-b149-9fc0e4074d08/bin/uautomizer/witness.graphml [2020-11-29 19:43:06,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:43:06,182 INFO L168 Benchmark]: Toolchain (without parser) took 172969.51 ms. Allocated memory was 104.9 MB in the beginning and 176.2 MB in the end (delta: 71.3 MB). Free memory was 75.3 MB in the beginning and 95.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,183 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 79.7 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:43:06,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 886.56 ms. Allocated memory is still 104.9 MB. Free memory was 75.0 MB in the beginning and 69.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 148.07 ms. Allocated memory is still 104.9 MB. Free memory was 69.8 MB in the beginning and 64.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,184 INFO L168 Benchmark]: Boogie Preprocessor took 95.67 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 60.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,188 INFO L168 Benchmark]: RCFGBuilder took 1909.87 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 59.9 MB in the beginning and 87.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,190 INFO L168 Benchmark]: BuchiAutomizer took 169823.86 ms. Allocated memory was 144.7 MB in the beginning and 176.2 MB in the end (delta: 31.5 MB). Free memory was 87.9 MB in the beginning and 98.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,194 INFO L168 Benchmark]: Witness Printer took 94.87 ms. Allocated memory is still 176.2 MB. Free memory was 98.5 MB in the beginning and 95.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:06,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 79.7 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 886.56 ms. Allocated memory is still 104.9 MB. Free memory was 75.0 MB in the beginning and 69.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 148.07 ms. Allocated memory is still 104.9 MB. Free memory was 69.8 MB in the beginning and 64.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.67 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 60.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1909.87 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 59.9 MB in the beginning and 87.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 169823.86 ms. Allocated memory was 144.7 MB in the beginning and 176.2 MB in the end (delta: 31.5 MB). Free memory was 87.9 MB in the beginning and 98.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 16.1 GB. * Witness Printer took 94.87 ms. Allocated memory is still 176.2 MB. Free memory was 98.5 MB in the beginning and 95.4 MB in the end (delta: 3.1 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 5 locations. The remainder module has 897 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 169.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 168.4s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 427 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 897 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1002 SDtfs, 1421 SDslu, 1301 SDs, 0 SdLazy, 173 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 110]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=7398} State at position 1 is {NULL=0, NULL=0, NULL=7398, NULL=7413, NULL=7399, NULL=0, NULL=7416, NULL=0, methaneLevelCritical=0, NULL=7401, retValue_acc=1, NULL=0, retValue_acc=0, NULL=7414, NULL=0, tmp___1=0, NULL=0, NULL=7424, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@678f788a=0, cleanupTimeShifts=4, tmp=0, NULL=7400, waterLevel=1, NULL=0, NULL=0, NULL=7412, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, tmp=1, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=7417, tmp___0=0, NULL=7420, tmp=1, retValue_acc=1, NULL=7404, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a3cf071=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a7767d4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57d47e17=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d408ab2=0, head=0, tmp=0, NULL=0, NULL=0, NULL=7425, NULL=7418, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21371372=0, NULL=0, NULL=0, NULL=7411, retValue_acc=0, NULL=7408, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3dee7d67=0, tmp___0=0, NULL=0, NULL=0, NULL=7407, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bf4d53f=0, tmp=1, NULL=0, NULL=7426, NULL=7423, switchedOnBeforeTS=0, tmp=0, \result=0, NULL=0, systemActive=1, NULL=7410, \result=1, NULL=0, \result=0, NULL=7419, tmp___0=0, \result=0, NULL=7415, NULL=7403, NULL=7405, NULL=7422, tmp___2=66, splverifierCounter=0, NULL=0, NULL=7421, NULL=7406, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3725900a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2851f446=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ad4d559=0, NULL=7402, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=7409, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6daa7267=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L443] int waterLevel = 1; [L444] int methaneLevelCritical = 0; [L546] int cleanupTimeShifts = 4; [L859] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L623] int retValue_acc ; [L624] int tmp ; [L681] int retValue_acc ; [L684] retValue_acc = 1 [L685] return (retValue_acc); [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L101] int splverifierCounter ; [L102] int tmp ; [L103] int tmp___0 ; [L104] int tmp___1 ; [L105] int tmp___2 ; [L108] splverifierCounter = 0 Loop: [L110] COND TRUE 1 [L112] COND TRUE splverifierCounter < 4 [L118] tmp = __VERIFIER_nondet_int() [L120] COND FALSE !(\read(tmp)) [L128] tmp___0 = __VERIFIER_nondet_int() [L130] COND FALSE !(\read(tmp___0)) [L138] tmp___2 = __VERIFIER_nondet_int() [L140] COND TRUE \read(tmp___2) [L438] systemActive = 1 [L337] int retValue_acc ; [L340] retValue_acc = pumpRunning [L341] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L187] COND FALSE !(\read(pumpRunning)) [L194] COND TRUE \read(systemActive) [L268] int tmp ; [L271] COND FALSE !(\read(pumpRunning)) [L242] int tmp ; [L245] COND FALSE !(\read(pumpRunning)) [L216] int tmp ; [L219] COND TRUE ! pumpRunning [L382] int retValue_acc ; [L383] int tmp ; [L384] int tmp___0 ; [L523] int retValue_acc ; [L526] COND TRUE waterLevel < 2 [L527] retValue_acc = 1 [L528] return (retValue_acc); [L388] tmp = isHighWaterSensorDry() [L390] COND TRUE \read(tmp) [L391] tmp___0 = 0 [L395] retValue_acc = tmp___0 [L396] return (retValue_acc); [L221] tmp = isHighWaterLevel() [L223] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L514] int retValue_acc ; [L517] retValue_acc = waterLevel [L518] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L337] int retValue_acc ; [L340] retValue_acc = pumpRunning [L341] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...