./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product59.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_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/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 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:50:28,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:50:28,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:50:28,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:50:28,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:50:28,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:50:28,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:50:28,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:50:28,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:50:28,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:50:28,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:50:28,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:50:28,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:50:28,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:50:28,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:50:28,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:50:28,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:50:28,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:50:28,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:50:28,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:50:28,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:50:28,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:50:28,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:50:28,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:50:28,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:50:28,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:50:28,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:50:28,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:50:28,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:50:28,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:50:28,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:50:28,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:50:28,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:50:28,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:50:28,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:50:28,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:50:28,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:50:28,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:50:28,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:50:28,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:50:28,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:50:28,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:50:28,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:50:28,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:50:28,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:50:28,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:50:28,925 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:50:28,926 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:50:28,926 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:50:28,926 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:50:28,927 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:50:28,927 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:50:28,927 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:50:28,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:50:28,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:50:28,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:50:28,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:50:28,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:50:28,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:50:28,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:50:28,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:50:28,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:50:28,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:50:28,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:50:28,931 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:50:28,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:50:28,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:50:28,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:50:28,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:50:28,933 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:50:28,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:50:28,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:50:28,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:50:28,934 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:50:28,936 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:50:28,936 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_8f478929-d692-442e-8c72-9e627a791503/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 [2020-11-30 00:50:29,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:50:29,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:50:29,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:50:29,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:50:29,310 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:50:29,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2020-11-30 00:50:29,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/data/7566e75eb/34792627475541c9b4ab8f8556203900/FLAG2b559513d [2020-11-30 00:50:30,176 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:50:30,176 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2020-11-30 00:50:30,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/data/7566e75eb/34792627475541c9b4ab8f8556203900/FLAG2b559513d [2020-11-30 00:50:30,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/data/7566e75eb/34792627475541c9b4ab8f8556203900 [2020-11-30 00:50:30,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:50:30,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:50:30,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:50:30,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:50:30,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:50:30,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:50:30" (1/1) ... [2020-11-30 00:50:30,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bd5a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:30, skipping insertion in model container [2020-11-30 00:50:30,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:50:30" (1/1) ... [2020-11-30 00:50:30,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:50:30,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:50:31,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:50:31,062 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:50:31,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:50:31,221 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:50:31,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31 WrapperNode [2020-11-30 00:50:31,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:50:31,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:50:31,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:50:31,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:50:31,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:50:31,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:50:31,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:50:31,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:50:31,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... [2020-11-30 00:50:31,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:50:31,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:50:31,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:50:31,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:50:31,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/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 [2020-11-30 00:50:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:50:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:50:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:50:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:50:33,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:50:33,048 INFO L298 CfgBuilder]: Removed 208 assume(true) statements. [2020-11-30 00:50:33,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:33 BoogieIcfgContainer [2020-11-30 00:50:33,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:50:33,053 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:50:33,053 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:50:33,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:50:33,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:50:33,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:50:30" (1/3) ... [2020-11-30 00:50:33,061 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1605bcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:50:33, skipping insertion in model container [2020-11-30 00:50:33,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:50:33,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:50:31" (2/3) ... [2020-11-30 00:50:33,062 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1605bcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:50:33, skipping insertion in model container [2020-11-30 00:50:33,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:50:33,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:33" (3/3) ... [2020-11-30 00:50:33,064 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2020-11-30 00:50:33,128 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:50:33,129 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:50:33,129 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:50:33,129 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:50:33,129 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:50:33,130 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:50:33,130 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:50:33,130 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:50:33,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states. [2020-11-30 00:50:33,202 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2020-11-30 00:50:33,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:50:33,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:50:33,212 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:50:33,212 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:33,213 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:50:33,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states. [2020-11-30 00:50:33,224 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2020-11-30 00:50:33,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:50:33,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:50:33,226 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:50:33,226 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:33,237 INFO L794 eck$LassoCheckResult]: Stem: 109#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 5#L-1true havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 3#L643true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 19#L651true main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 25#L607true assume 0 != main_~tmp~3; 126#L580true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 22#L673-1true [2020-11-30 00:50:33,247 INFO L796 eck$LassoCheckResult]: Loop: 22#L673-1true assume !false; 100#L713true assume test_~splverifierCounter~0 < 4; 47#L714true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 57#L722true assume !(0 != test_~tmp~5); 63#L722-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 110#L732true assume !(0 != test_~tmp___0~1); 112#L732-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 13#L742true assume 0 != test_~tmp___2~0; 136#L748-1true assume !(0 != ~pumpRunning~0); 4#L778true assume !(0 != ~systemActive~0); 89#L785true havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 119#L459-2true __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 67#L667true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 22#L673-1true [2020-11-30 00:50:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:33,257 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:50:33,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:33,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958109364] [2020-11-30 00:50:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:33,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:33,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:34,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:34,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1670509186, now seen corresponding path program 1 times [2020-11-30 00:50:34,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:34,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853076128] [2020-11-30 00:50:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:34,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:34,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:34,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash 43769752, now seen corresponding path program 1 times [2020-11-30 00:50:34,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:34,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114797909] [2020-11-30 00:50:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:34,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114797909] [2020-11-30 00:50:34,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:34,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:50:34,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818142256] [2020-11-30 00:50:34,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:34,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:50:34,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:50:34,475 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 6 states. [2020-11-30 00:50:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:34,888 INFO L93 Difference]: Finished difference Result 330 states and 471 transitions. [2020-11-30 00:50:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:50:34,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 471 transitions. [2020-11-30 00:50:34,918 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 213 [2020-11-30 00:50:34,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 309 states and 450 transitions. [2020-11-30 00:50:34,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 309 [2020-11-30 00:50:34,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 309 [2020-11-30 00:50:34,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 309 states and 450 transitions. [2020-11-30 00:50:34,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:50:34,962 INFO L691 BuchiCegarLoop]: Abstraction has 309 states and 450 transitions. [2020-11-30 00:50:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states and 450 transitions. [2020-11-30 00:50:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 180. [2020-11-30 00:50:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-30 00:50:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 261 transitions. [2020-11-30 00:50:35,039 INFO L714 BuchiCegarLoop]: Abstraction has 180 states and 261 transitions. [2020-11-30 00:50:35,040 INFO L594 BuchiCegarLoop]: Abstraction has 180 states and 261 transitions. [2020-11-30 00:50:35,040 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:50:35,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 180 states and 261 transitions. [2020-11-30 00:50:35,044 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 124 [2020-11-30 00:50:35,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:50:35,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:50:35,046 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:50:35,046 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:50:35,047 INFO L794 eck$LassoCheckResult]: Stem: 613#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 495#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 491#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 492#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 519#L607 assume 0 != main_~tmp~3; 526#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 517#L673-1 [2020-11-30 00:50:35,047 INFO L796 eck$LassoCheckResult]: Loop: 517#L673-1 assume !false; 521#L713 assume test_~splverifierCounter~0 < 4; 556#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 557#L722 assume !(0 != test_~tmp~5); 576#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 583#L732 assume !(0 != test_~tmp___0~1); 612#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 506#L742 assume 0 != test_~tmp___2~0; 507#L748-1 assume !(0 != ~pumpRunning~0); 493#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 494#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 559#L810-1 assume !(0 == ~pumpRunning~0); 561#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 605#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 589#L667 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 517#L673-1 [2020-11-30 00:50:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:50:35,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:35,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175207663] [2020-11-30 00:50:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1972735879, now seen corresponding path program 1 times [2020-11-30 00:50:35,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:35,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113821245] [2020-11-30 00:50:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:35,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113821245] [2020-11-30 00:50:35,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:35,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:50:35,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701444077] [2020-11-30 00:50:35,297 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:50:35,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:35,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:50:35,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:50:35,298 INFO L87 Difference]: Start difference. First operand 180 states and 261 transitions. cyclomatic complexity: 84 Second operand 3 states. [2020-11-30 00:50:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:35,490 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2020-11-30 00:50:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:50:35,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 310 transitions. [2020-11-30 00:50:35,496 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2020-11-30 00:50:35,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 310 transitions. [2020-11-30 00:50:35,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2020-11-30 00:50:35,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2020-11-30 00:50:35,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 310 transitions. [2020-11-30 00:50:35,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:50:35,508 INFO L691 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-30 00:50:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 310 transitions. [2020-11-30 00:50:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2020-11-30 00:50:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-30 00:50:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 310 transitions. [2020-11-30 00:50:35,542 INFO L714 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-30 00:50:35,542 INFO L594 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2020-11-30 00:50:35,543 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:50:35,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 310 transitions. [2020-11-30 00:50:35,548 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2020-11-30 00:50:35,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:50:35,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:50:35,551 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:50:35,552 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] [2020-11-30 00:50:35,553 INFO L794 eck$LassoCheckResult]: Stem: 1038#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 906#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 902#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 903#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 931#L607 assume 0 != main_~tmp~3; 939#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1046#L673-1 [2020-11-30 00:50:35,554 INFO L796 eck$LassoCheckResult]: Loop: 1046#L673-1 assume !false; 1120#L713 assume test_~splverifierCounter~0 < 4; 1119#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 991#L722 assume !(0 != test_~tmp~5); 993#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 999#L732 assume !(0 != test_~tmp___0~1); 1036#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1040#L742 assume 0 != test_~tmp___2~0; 1103#L748-1 assume !(0 != ~pumpRunning~0); 904#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 905#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 976#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 977#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 994#L504-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 954#L956-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 955#L956-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 926#L962-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 927#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1026#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1122#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1121#L667 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 1046#L673-1 [2020-11-30 00:50:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:35,556 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:50:35,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:35,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108531420] [2020-11-30 00:50:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1765215501, now seen corresponding path program 1 times [2020-11-30 00:50:35,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:35,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056811585] [2020-11-30 00:50:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:35,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:35,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1309144307, now seen corresponding path program 1 times [2020-11-30 00:50:35,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:35,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016619025] [2020-11-30 00:50:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:50:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:50:35,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016619025] [2020-11-30 00:50:35,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:50:35,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:50:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912775239] [2020-11-30 00:50:36,084 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-30 00:50:36,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:50:36,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:50:36,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:50:36,178 INFO L87 Difference]: Start difference. First operand 225 states and 310 transitions. cyclomatic complexity: 88 Second operand 5 states. [2020-11-30 00:50:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:50:36,447 INFO L93 Difference]: Finished difference Result 771 states and 1066 transitions. [2020-11-30 00:50:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:50:36,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 771 states and 1066 transitions. [2020-11-30 00:50:36,479 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 575 [2020-11-30 00:50:36,487 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 771 states to 771 states and 1066 transitions. [2020-11-30 00:50:36,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 771 [2020-11-30 00:50:36,488 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 771 [2020-11-30 00:50:36,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 771 states and 1066 transitions. [2020-11-30 00:50:36,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:50:36,490 INFO L691 BuchiCegarLoop]: Abstraction has 771 states and 1066 transitions. [2020-11-30 00:50:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states and 1066 transitions. [2020-11-30 00:50:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 444. [2020-11-30 00:50:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 00:50:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 602 transitions. [2020-11-30 00:50:36,514 INFO L714 BuchiCegarLoop]: Abstraction has 444 states and 602 transitions. [2020-11-30 00:50:36,514 INFO L594 BuchiCegarLoop]: Abstraction has 444 states and 602 transitions. [2020-11-30 00:50:36,514 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:50:36,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 444 states and 602 transitions. [2020-11-30 00:50:36,519 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 316 [2020-11-30 00:50:36,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:50:36,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:50:36,520 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:50:36,520 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] [2020-11-30 00:50:36,521 INFO L794 eck$LassoCheckResult]: Stem: 2067#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1920#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 1916#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1917#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 1946#L607 assume 0 != main_~tmp~3; 1953#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2079#L673-1 [2020-11-30 00:50:36,521 INFO L796 eck$LassoCheckResult]: Loop: 2079#L673-1 assume !false; 2256#L713 assume test_~splverifierCounter~0 < 4; 2257#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 2343#L722 assume !(0 != test_~tmp~5); 2341#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 2340#L732 assume !(0 != test_~tmp___0~1); 2339#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 2337#L742 assume 0 != test_~tmp___2~0; 2336#L748-1 assume !(0 != ~pumpRunning~0); 2291#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 2289#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2251#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 2304#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 2292#L504-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 2286#L956-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1975#L956-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1941#L962-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1942#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 2049#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 2055#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 2025#L667 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1982#L491 __utac_acc__Specification3_spec__1_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret55;havoc __utac_acc__Specification3_spec__1_#t~ret55; 1983#L673 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2079#L673-1 [2020-11-30 00:50:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-30 00:50:36,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:36,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722662594] [2020-11-30 00:50:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash 139994343, now seen corresponding path program 1 times [2020-11-30 00:50:36,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:36,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914015131] [2020-11-30 00:50:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:50:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash 337747585, now seen corresponding path program 1 times [2020-11-30 00:50:36,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:50:36,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384602977] [2020-11-30 00:50:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:50:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:50:36,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:50:36,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:50:37,066 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-30 00:50:37,205 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-30 00:52:20,697 WARN L193 SmtUtils]: Spent 1.72 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:53:20,386 WARN L193 SmtUtils]: Spent 59.68 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:53:20,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:53:20 BoogieIcfgContainer [2020-11-30 00:53:20,733 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:53:20,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:53:20,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:53:20,734 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:53:20,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:50:33" (3/4) ... [2020-11-30 00:53:20,739 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:53:20,818 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f478929-d692-442e-8c72-9e627a791503/bin/uautomizer/witness.graphml [2020-11-30 00:53:20,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:53:20,820 INFO L168 Benchmark]: Toolchain (without parser) took 170333.21 ms. Allocated memory was 98.6 MB in the beginning and 172.0 MB in the end (delta: 73.4 MB). Free memory was 67.6 MB in the beginning and 57.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,821 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:53:20,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.31 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 63.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.82 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 58.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,823 INFO L168 Benchmark]: Boogie Preprocessor took 75.50 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,824 INFO L168 Benchmark]: RCFGBuilder took 1615.36 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 56.1 MB in the beginning and 87.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,825 INFO L168 Benchmark]: BuchiAutomizer took 167680.70 ms. Allocated memory was 134.2 MB in the beginning and 172.0 MB in the end (delta: 37.7 MB). Free memory was 87.8 MB in the beginning and 60.8 MB in the end (delta: 27.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,825 INFO L168 Benchmark]: Witness Printer took 84.47 ms. Allocated memory is still 172.0 MB. Free memory was 60.8 MB in the beginning and 57.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:53:20,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 731.31 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 63.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.82 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 58.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.50 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1615.36 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 56.1 MB in the beginning and 87.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 167680.70 ms. Allocated memory was 134.2 MB in the beginning and 172.0 MB in the end (delta: 37.7 MB). Free memory was 87.8 MB in the beginning and 60.8 MB in the end (delta: 27.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. * Witness Printer took 84.47 ms. Allocated memory is still 172.0 MB. Free memory was 60.8 MB in the beginning and 57.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 444 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 167.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 166.2s. Construction of modules took 0.4s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 456 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 444 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 663 SDtfs, 1690 SDslu, 1827 SDs, 0 SdLazy, 179 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 712]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=13009} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@874981b=0, NULL=13009, NULL=0, methaneLevelCritical=0, NULL=13037, tmp=0, NULL=0, NULL=13012, tmp___1=0, NULL=13026, NULL=0, NULL=13021, NULL=13016, cleanupTimeShifts=4, tmp=0, NULL=13036, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43ddb363=0, retValue_acc=1, tmp=1, NULL=13029, NULL=0, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5babac32=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6da568b4=0, NULL=0, NULL=0, retValue_acc=1, NULL=13028, tmp___0=0, NULL=13025, tmp=1, NULL=13011, head=0, NULL=0, NULL=0, NULL=13010, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47f006db=0, NULL=0, NULL=0, NULL=13031, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@276fb57c=0, NULL=0, retValue_acc=0, NULL=13013, NULL=0, NULL=13030, NULL=13035, tmp___0=0, NULL=0, NULL=13034, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e9742f9=0, NULL=0, tmp___0=1, NULL=13019, NULL=13024, NULL=13032, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, \result=0, NULL=13014, NULL=13018, NULL=13033, \result=0, NULL=13020, NULL=0, NULL=13022, retValue_acc=1, NULL=13023, tmp___2=60, splverifierCounter=0, NULL=0, \result=0, NULL=13017, NULL=13015, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6edee4bf=60, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6463bd7b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5138b45=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1bf8944f=0, NULL=13027} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 Loop: [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND FALSE !(\read(tmp)) [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND TRUE \read(tmp___2) [L778] COND FALSE !(\read(pumpRunning)) [L785] COND TRUE \read(systemActive) [L833] int tmp ; [L836] COND FALSE !(\read(pumpRunning)) [L807] int tmp ; [L810] COND TRUE ! pumpRunning [L948] int retValue_acc ; [L949] int tmp ; [L950] int tmp___0 ; [L496] int retValue_acc ; [L499] COND TRUE waterLevel < 2 [L500] retValue_acc = 1 [L501] return (retValue_acc); [L954] tmp = isHighWaterSensorDry() [L956] COND TRUE \read(tmp) [L957] tmp___0 = 0 [L961] retValue_acc = tmp___0 [L962] return (retValue_acc); [L812] tmp = isHighWaterLevel() [L814] COND FALSE !(\read(tmp)) [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L671] tmp___0 = getWaterLevel() [L673] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...