./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product39.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_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/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 18ffa626b14f3a98f8946a4838c47fc7d91cbcd4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:55:21,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:21,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:21,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:21,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:21,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:21,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:21,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:21,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:21,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:21,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:21,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:21,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:21,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:21,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:21,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:21,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:21,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:21,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:21,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:21,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:21,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:21,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:21,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:21,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:21,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:21,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:21,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:21,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:21,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:21,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:21,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:21,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:21,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:21,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:21,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:21,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:21,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:21,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:21,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:21,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:21,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:55:21,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:21,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:21,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:21,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:21,534 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:21,534 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:55:21,534 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:55:21,535 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:55:21,535 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:55:21,535 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:55:21,535 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:55:21,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:21,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:55:21,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:55:21,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:21,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:55:21,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:21,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:55:21,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:55:21,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:55:21,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:55:21,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:55:21,542 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:55:21,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:21,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:55:21,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:21,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:21,543 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:55:21,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:21,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:21,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:21,544 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:55:21,546 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:55:21,546 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_3f524ee8-43b4-4665-b028-841fa46729aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ffa626b14f3a98f8946a4838c47fc7d91cbcd4 [2020-11-29 23:55:21,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:21,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:21,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:21,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:21,921 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:21,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2020-11-29 23:55:22,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/data/23ee9420e/8f483f0c0d4b4780937727f6e77db374/FLAGaf7bd806f [2020-11-29 23:55:22,548 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:22,549 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2020-11-29 23:55:22,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/data/23ee9420e/8f483f0c0d4b4780937727f6e77db374/FLAGaf7bd806f [2020-11-29 23:55:22,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/data/23ee9420e/8f483f0c0d4b4780937727f6e77db374 [2020-11-29 23:55:22,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:22,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:55:22,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:22,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:22,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:22,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:22" (1/1) ... [2020-11-29 23:55:22,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c10c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:22, skipping insertion in model container [2020-11-29 23:55:22,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:22" (1/1) ... [2020-11-29 23:55:22,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:22,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:23,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:23,387 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:23,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:23,514 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:23,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23 WrapperNode [2020-11-29 23:55:23,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:23,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:23,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:55:23,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:55:23,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:23,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:23,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:23,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:23,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... [2020-11-29 23:55:23,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:23,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:23,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:23,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:23,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/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 23:55:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:55:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:55:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:23,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:24,872 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:24,872 INFO L298 CfgBuilder]: Removed 180 assume(true) statements. [2020-11-29 23:55:24,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:24 BoogieIcfgContainer [2020-11-29 23:55:24,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:24,875 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:55:24,875 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:55:24,878 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:55:24,879 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:24,879 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:55:22" (1/3) ... [2020-11-29 23:55:24,881 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@529d53db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:24, skipping insertion in model container [2020-11-29 23:55:24,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:24,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:23" (2/3) ... [2020-11-29 23:55:24,881 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@529d53db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:55:24, skipping insertion in model container [2020-11-29 23:55:24,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:55:24,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:24" (3/3) ... [2020-11-29 23:55:24,883 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-11-29 23:55:24,926 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:55:24,926 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:55:24,926 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:55:24,926 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:24,926 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:24,926 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:55:24,927 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:24,927 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:55:24,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states. [2020-11-29 23:55:24,968 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2020-11-29 23:55:24,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:24,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:24,976 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:24,976 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:24,976 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:55:24,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states. [2020-11-29 23:55:24,983 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2020-11-29 23:55:24,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:24,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:24,984 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:24,984 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:24,989 INFO L794 eck$LassoCheckResult]: Stem: 88#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 12#L-1true havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 16#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 11#L84true main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 31#L384true assume 0 != main_~tmp~3; 79#L358true ~switchedOnBeforeTS~0 := 0; 24#L472true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 67#L493-1true [2020-11-29 23:55:24,990 INFO L796 eck$LassoCheckResult]: Loop: 67#L493-1true assume !false; 3#L409true assume test_~splverifierCounter~0 < 4; 96#L410true test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 98#L418true assume !(0 != test_~tmp~4); 99#L418-1true test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 26#L428true assume !(0 != test_~tmp___0~1); 30#L428-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 69#L438true assume 0 != test_~tmp___2~0; 51#L444-1true havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 114#L222true __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 66#L482true assume !(0 != ~pumpRunning~0); 41#L111true assume !(0 != ~systemActive~0); 103#L118true havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 47#L956true __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 65#L493true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 67#L493-1true [2020-11-29 23:55:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:24,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 23:55:25,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:25,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233553576] [2020-11-29 23:55:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:25,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:25,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:25,362 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -240260329, now seen corresponding path program 1 times [2020-11-29 23:55:25,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:25,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19672931] [2020-11-29 23:55:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:25,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:25,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:25,383 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1693764881, now seen corresponding path program 1 times [2020-11-29 23:55:25,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:25,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686570090] [2020-11-29 23:55:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:25,603 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 23:55:25,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686570090] [2020-11-29 23:55:25,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:25,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:55:25,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575519522] [2020-11-29 23:55:25,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:25,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:55:25,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:55:25,770 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 6 states. [2020-11-29 23:55:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:26,081 INFO L93 Difference]: Finished difference Result 289 states and 412 transitions. [2020-11-29 23:55:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:55:26,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 412 transitions. [2020-11-29 23:55:26,094 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 187 [2020-11-29 23:55:26,114 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 268 states and 391 transitions. [2020-11-29 23:55:26,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2020-11-29 23:55:26,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2020-11-29 23:55:26,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 391 transitions. [2020-11-29 23:55:26,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:26,124 INFO L691 BuchiCegarLoop]: Abstraction has 268 states and 391 transitions. [2020-11-29 23:55:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 391 transitions. [2020-11-29 23:55:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 161. [2020-11-29 23:55:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-29 23:55:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2020-11-29 23:55:26,187 INFO L714 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2020-11-29 23:55:26,187 INFO L594 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2020-11-29 23:55:26,187 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:55:26,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 161 states and 233 transitions. [2020-11-29 23:55:26,196 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2020-11-29 23:55:26,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:26,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:26,197 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:26,197 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:26,198 INFO L794 eck$LassoCheckResult]: Stem: 536#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 447#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 448#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 445#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 446#L384 assume 0 != main_~tmp~3; 483#L358 ~switchedOnBeforeTS~0 := 0; 469#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 456#L493-1 [2020-11-29 23:55:26,198 INFO L796 eck$LassoCheckResult]: Loop: 456#L493-1 assume !false; 429#L409 assume test_~splverifierCounter~0 < 4; 430#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 539#L418 assume !(0 != test_~tmp~4); 433#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 471#L428 assume !(0 != test_~tmp___0~1); 473#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 479#L438 assume 0 != test_~tmp___2~0; 504#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 509#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 531#L482 assume !(0 != ~pumpRunning~0); 495#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 486#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 487#L143-1 assume !(0 == ~pumpRunning~0); 478#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 505#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 506#L493 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 456#L493-1 [2020-11-29 23:55:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:26,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 23:55:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:26,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86728671] [2020-11-29 23:55:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:26,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:26,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:26,387 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1402231346, now seen corresponding path program 1 times [2020-11-29 23:55:26,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:26,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631681418] [2020-11-29 23:55:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:26,413 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 23:55:26,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631681418] [2020-11-29 23:55:26,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:26,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:55:26,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377004847] [2020-11-29 23:55:26,414 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:55:26,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:55:26,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:26,415 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. cyclomatic complexity: 75 Second operand 3 states. [2020-11-29 23:55:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:26,555 INFO L93 Difference]: Finished difference Result 208 states and 284 transitions. [2020-11-29 23:55:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:55:26,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 208 states and 284 transitions. [2020-11-29 23:55:26,562 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2020-11-29 23:55:26,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 208 states to 208 states and 284 transitions. [2020-11-29 23:55:26,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2020-11-29 23:55:26,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2020-11-29 23:55:26,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 284 transitions. [2020-11-29 23:55:26,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:26,566 INFO L691 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2020-11-29 23:55:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 284 transitions. [2020-11-29 23:55:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-11-29 23:55:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-11-29 23:55:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 284 transitions. [2020-11-29 23:55:26,584 INFO L714 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2020-11-29 23:55:26,584 INFO L594 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2020-11-29 23:55:26,584 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:55:26,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 208 states and 284 transitions. [2020-11-29 23:55:26,587 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2020-11-29 23:55:26,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:26,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:26,589 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:26,590 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:26,590 INFO L794 eck$LassoCheckResult]: Stem: 920#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 823#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 820#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 821#L384 assume 0 != main_~tmp~3; 860#L358 ~switchedOnBeforeTS~0 := 0; 846#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 847#L493-1 [2020-11-29 23:55:26,591 INFO L796 eck$LassoCheckResult]: Loop: 847#L493-1 assume !false; 804#L409 assume test_~splverifierCounter~0 < 4; 805#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 1005#L418 assume !(0 != test_~tmp~4); 1003#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 1002#L428 assume !(0 != test_~tmp___0~1); 996#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 915#L438 assume 0 != test_~tmp___2~0; 880#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 992#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 990#L482 assume !(0 != ~pumpRunning~0); 871#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 863#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 864#L143-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 894#L964-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 895#L969-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 869#L271-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 867#L271-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 868#L277-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 854#L147-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 856#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 989#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 987#L493 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 847#L493-1 [2020-11-29 23:55:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 23:55:26,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:26,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586975569] [2020-11-29 23:55:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:26,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:26,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:26,755 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:26,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2024417082, now seen corresponding path program 1 times [2020-11-29 23:55:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:26,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613929315] [2020-11-29 23:55:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:26,821 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 23:55:26,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613929315] [2020-11-29 23:55:26,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:26,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:26,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064504684] [2020-11-29 23:55:26,822 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:55:26,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:55:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:26,823 INFO L87 Difference]: Start difference. First operand 208 states and 284 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-29 23:55:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:27,158 INFO L93 Difference]: Finished difference Result 817 states and 1123 transitions. [2020-11-29 23:55:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:55:27,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 817 states and 1123 transitions. [2020-11-29 23:55:27,168 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 575 [2020-11-29 23:55:27,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 817 states to 817 states and 1123 transitions. [2020-11-29 23:55:27,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 817 [2020-11-29 23:55:27,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 817 [2020-11-29 23:55:27,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 817 states and 1123 transitions. [2020-11-29 23:55:27,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:55:27,182 INFO L691 BuchiCegarLoop]: Abstraction has 817 states and 1123 transitions. [2020-11-29 23:55:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states and 1123 transitions. [2020-11-29 23:55:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 406. [2020-11-29 23:55:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-11-29 23:55:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 546 transitions. [2020-11-29 23:55:27,214 INFO L714 BuchiCegarLoop]: Abstraction has 406 states and 546 transitions. [2020-11-29 23:55:27,214 INFO L594 BuchiCegarLoop]: Abstraction has 406 states and 546 transitions. [2020-11-29 23:55:27,214 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:55:27,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 406 states and 546 transitions. [2020-11-29 23:55:27,217 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 294 [2020-11-29 23:55:27,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:55:27,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:55:27,219 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:27,219 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:27,219 INFO L794 eck$LassoCheckResult]: Stem: 1973#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1866#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 1867#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1864#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 1865#L384 assume 0 != main_~tmp~3; 1904#L358 ~switchedOnBeforeTS~0 := 0; 1891#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1875#L493-1 [2020-11-29 23:55:27,220 INFO L796 eck$LassoCheckResult]: Loop: 1875#L493-1 assume !false; 1848#L409 assume test_~splverifierCounter~0 < 4; 1849#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 2221#L418 assume !(0 != test_~tmp~4); 2218#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 2217#L428 assume !(0 != test_~tmp___0~1); 2215#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2213#L438 assume 0 != test_~tmp___2~0; 2212#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 2188#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 2121#L482 assume !(0 != ~pumpRunning~0); 1915#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1907#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1908#L143-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1941#L964-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1942#L969-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1913#L271-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1911#L271-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1912#L277-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1898#L147-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1900#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1984#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 1960#L493 assume 2 != __utac_acc__Specification5_spec__3_~tmp~5;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 1961#L222-1 __utac_acc__Specification5_spec__3_#t~ret35 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret35;havoc __utac_acc__Specification5_spec__3_#t~ret35; 1874#L497 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1875#L493-1 [2020-11-29 23:55:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 23:55:27,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:27,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900401907] [2020-11-29 23:55:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,318 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash -155383307, now seen corresponding path program 1 times [2020-11-29 23:55:27,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:27,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251615802] [2020-11-29 23:55:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:27,345 INFO L82 PathProgramCache]: Analyzing trace with hash -218809489, now seen corresponding path program 1 times [2020-11-29 23:55:27,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:27,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994345357] [2020-11-29 23:55:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:55:27,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:55:27,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:55:27,640 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-29 23:55:27,805 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-29 23:56:43,081 WARN L193 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 23:57:43,595 WARN L193 SmtUtils]: Spent 1.01 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 23:57:44,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:57:44 BoogieIcfgContainer [2020-11-29 23:57:44,090 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:57:44,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:57:44,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:57:44,091 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:57:44,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:24" (3/4) ... [2020-11-29 23:57:44,098 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:57:44,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f524ee8-43b4-4665-b028-841fa46729aa/bin/uautomizer/witness.graphml [2020-11-29 23:57:44,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:57:44,219 INFO L168 Benchmark]: Toolchain (without parser) took 141347.91 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 57.1 MB in the beginning and 51.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,220 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 90.2 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:44,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.13 ms. Allocated memory is still 90.2 MB. Free memory was 56.9 MB in the beginning and 57.0 MB in the end (delta: -100.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.71 ms. Allocated memory is still 90.2 MB. Free memory was 57.0 MB in the beginning and 53.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,222 INFO L168 Benchmark]: Boogie Preprocessor took 42.98 ms. Allocated memory is still 90.2 MB. Free memory was 53.6 MB in the beginning and 50.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,222 INFO L168 Benchmark]: RCFGBuilder took 1230.22 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.8 MB in the beginning and 78.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,223 INFO L168 Benchmark]: BuchiAutomizer took 139214.87 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 78.1 MB in the beginning and 54.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,223 INFO L168 Benchmark]: Witness Printer took 127.62 ms. Allocated memory is still 136.3 MB. Free memory was 54.9 MB in the beginning and 51.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:44,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 90.2 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 640.13 ms. Allocated memory is still 90.2 MB. Free memory was 56.9 MB in the beginning and 57.0 MB in the end (delta: -100.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.71 ms. Allocated memory is still 90.2 MB. Free memory was 57.0 MB in the beginning and 53.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.98 ms. Allocated memory is still 90.2 MB. Free memory was 53.6 MB in the beginning and 50.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1230.22 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.8 MB in the beginning and 78.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 139214.87 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 78.1 MB in the beginning and 54.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. * Witness Printer took 127.62 ms. Allocated memory is still 136.3 MB. Free memory was 54.9 MB in the beginning and 51.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 406 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 139.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 138.0s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 518 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 406 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 598 SDtfs, 1507 SDslu, 1585 SDs, 0 SdLazy, 210 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 408]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=22873} State at position 1 is {NULL=0, NULL=0, NULL=22880, NULL=0, retValue_acc=1, NULL=22873, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49654700=0, NULL=22891, methaneLevelCritical=0, NULL=22884, retValue_acc=0, tmp=0, NULL=0, NULL=22892, NULL=0, tmp___1=0, NULL=0, NULL=22879, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4260e8c1=0, NULL=22878, waterLevel=1, NULL=22885, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48c0c6a9=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45bc3d2c=0, head=0, pumpRunning=0, NULL=22886, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78ac25fa=0, tmp=1, NULL=22888, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e2e22f9=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311e4b5b=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@272c6a8d=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fd26aaa=0, tmp___0=0, NULL=22889, NULL=22894, NULL=22875, tmp=0, head=0, NULL=0, NULL=22895, retValue_acc=0, NULL=22876, NULL=22887, NULL=22881, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=22883, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=22877, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=22893, NULL=22901, tmp___0=0, \result=0, NULL=22897, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d56e465=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65481d22=0, NULL=0, NULL=22882, NULL=22900, NULL=22899, retValue_acc=1, tmp___2=78, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=22874, NULL=0, NULL=0, NULL=22896, NULL=0, NULL=22898, NULL=22890, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L99] int pumpRunning = 0; [L100] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L466] int switchedOnBeforeTS ; [L684] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L881] int waterLevel = 1; [L882] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L471] switchedOnBeforeTS = 0 [L399] int splverifierCounter ; [L400] int tmp ; [L401] int tmp___0 ; [L402] int tmp___1 ; [L403] int tmp___2 ; [L406] splverifierCounter = 0 Loop: [L408] COND TRUE 1 [L410] COND TRUE splverifierCounter < 4 [L416] tmp = __VERIFIER_nondet_int() [L418] COND FALSE !(\read(tmp)) [L426] tmp___0 = __VERIFIER_nondet_int() [L428] COND FALSE !(\read(tmp___0)) [L436] tmp___2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp___2) [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L480] switchedOnBeforeTS = isPumpRunning() [L111] COND FALSE !(\read(pumpRunning)) [L118] COND TRUE \read(systemActive) [L166] int tmp ; [L169] COND FALSE !(\read(pumpRunning)) [L140] int tmp ; [L143] COND TRUE ! pumpRunning [L263] int retValue_acc ; [L264] int tmp ; [L265] int tmp___0 ; [L961] int retValue_acc ; [L964] COND TRUE waterLevel < 2 [L965] retValue_acc = 1 [L966] return (retValue_acc); [L269] tmp = isHighWaterSensorDry() [L271] COND TRUE \read(tmp) [L272] tmp___0 = 0 [L276] retValue_acc = tmp___0 [L277] return (retValue_acc); [L145] tmp = isHighWaterLevel() [L147] COND FALSE !(\read(tmp)) [L486] int tmp ; [L487] int tmp___0 ; [L952] int retValue_acc ; [L955] retValue_acc = waterLevel [L956] return (retValue_acc); [L491] tmp = getWaterLevel() [L493] COND TRUE tmp != 2 [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L495] tmp___0 = isPumpRunning() [L497] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...