./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/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 00e497454c8779dfd347e43478e15d5d034f1070 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:56:04,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:56:04,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:56:04,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:56:04,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:56:04,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:56:04,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:56:04,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:56:04,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:56:04,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:56:04,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:56:04,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:56:04,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:56:04,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:56:04,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:56:04,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:56:04,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:56:04,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:56:04,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:56:04,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:56:04,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:56:04,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:56:04,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:56:04,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:56:04,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:56:04,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:56:04,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:56:04,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:56:04,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:56:04,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:56:04,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:56:04,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:56:04,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:56:04,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:56:04,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:56:04,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:56:04,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:56:04,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:56:04,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:56:04,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:56:04,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:56:04,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:56:04,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:56:04,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:56:04,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:56:04,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:56:04,895 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:56:04,895 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:56:04,895 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:56:04,895 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:56:04,896 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:56:04,896 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:56:04,896 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:56:04,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:56:04,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:56:04,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:56:04,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:56:04,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:56:04,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:56:04,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:56:04,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:56:04,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:56:04,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:56:04,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:56:04,899 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:56:04,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:56:04,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:56:04,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:56:04,900 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:56:04,901 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:56:04,901 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_f0dc5682-cba2-446c-bc97-73727f0a92dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00e497454c8779dfd347e43478e15d5d034f1070 [2020-11-29 18:56:05,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:56:05,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:56:05,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:56:05,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:56:05,161 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:56:05,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2020-11-29 18:56:05,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/data/c40c28429/1b2ab746165a42418034c3a4acd5db46/FLAG6d8272c67 [2020-11-29 18:56:05,840 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:56:05,858 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2020-11-29 18:56:05,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/data/c40c28429/1b2ab746165a42418034c3a4acd5db46/FLAG6d8272c67 [2020-11-29 18:56:06,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/data/c40c28429/1b2ab746165a42418034c3a4acd5db46 [2020-11-29 18:56:06,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:56:06,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:56:06,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:56:06,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:56:06,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:56:06,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575c4080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06, skipping insertion in model container [2020-11-29 18:56:06,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:56:06,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:56:06,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:56:06,497 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:56:06,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:56:06,658 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:56:06,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06 WrapperNode [2020-11-29 18:56:06,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:56:06,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:56:06,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:56:06,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:56:06,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:56:06,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:56:06,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:56:06,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:56:06,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... [2020-11-29 18:56:06,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:56:06,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:56:06,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:56:06,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:56:06,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:56:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:56:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:56:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:56:06,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:56:08,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:56:08,329 INFO L298 CfgBuilder]: Removed 372 assume(true) statements. [2020-11-29 18:56:08,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:08 BoogieIcfgContainer [2020-11-29 18:56:08,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:56:08,334 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:56:08,335 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:56:08,338 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:56:08,339 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:56:08,340 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:56:06" (1/3) ... [2020-11-29 18:56:08,341 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1438fd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:56:08, skipping insertion in model container [2020-11-29 18:56:08,341 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:56:08,341 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:06" (2/3) ... [2020-11-29 18:56:08,342 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1438fd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:56:08, skipping insertion in model container [2020-11-29 18:56:08,342 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:56:08,342 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:08" (3/3) ... [2020-11-29 18:56:08,344 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2020-11-29 18:56:08,408 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:56:08,408 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:56:08,408 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:56:08,409 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:56:08,409 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:56:08,409 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:56:08,410 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:56:08,410 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:56:08,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states. [2020-11-29 18:56:08,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 155 [2020-11-29 18:56:08,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:56:08,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:56:08,510 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:08,511 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:08,511 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:56:08,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states. [2020-11-29 18:56:08,527 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 155 [2020-11-29 18:56:08,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:56:08,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:56:08,532 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:08,532 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:08,544 INFO L794 eck$LassoCheckResult]: Stem: 87#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 4#L-1true havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 58#L119true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 66#L127true main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 83#L297true assume 0 != main_~tmp~2; 42#L273true ~switchedOnBeforeTS~0 := 0; 125#L51true havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 147#L72-1true [2020-11-29 18:56:08,545 INFO L796 eck$LassoCheckResult]: Loop: 147#L72-1true assume !false; 167#L157true assume test_~splverifierCounter~0 < 4; 18#L158true test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 132#L166true assume !(0 != test_~tmp~1); 130#L166-1true test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 73#L176true assume !(0 != test_~tmp___0~1); 71#L176-1true test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 3#L186true assume 0 != test_~tmp___2~0; 116#L192-1true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 162#L482true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 150#L61true assume !(0 != ~pumpRunning~0); 53#L328true assume !(0 != ~systemActive~0); 124#L335true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 127#L651true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 151#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 147#L72-1true [2020-11-29 18:56:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 18:56:08,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:08,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358931167] [2020-11-29 18:56:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:08,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:09,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -235396457, now seen corresponding path program 1 times [2020-11-29 18:56:09,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:09,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105404474] [2020-11-29 18:56:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:09,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:09,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,074 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:09,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1698628753, now seen corresponding path program 1 times [2020-11-29 18:56:09,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768140647] [2020-11-29 18:56:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:56:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:56:09,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768140647] [2020-11-29 18:56:09,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:56:09,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:56:09,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196164631] [2020-11-29 18:56:09,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:56:09,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:56:09,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:56:09,335 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 6 states. [2020-11-29 18:56:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:56:09,669 INFO L93 Difference]: Finished difference Result 517 states and 748 transitions. [2020-11-29 18:56:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:56:09,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 748 transitions. [2020-11-29 18:56:09,678 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 339 [2020-11-29 18:56:09,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 496 states and 727 transitions. [2020-11-29 18:56:09,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 496 [2020-11-29 18:56:09,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 496 [2020-11-29 18:56:09,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 727 transitions. [2020-11-29 18:56:09,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:56:09,706 INFO L691 BuchiCegarLoop]: Abstraction has 496 states and 727 transitions. [2020-11-29 18:56:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 727 transitions. [2020-11-29 18:56:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 275. [2020-11-29 18:56:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-11-29 18:56:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 401 transitions. [2020-11-29 18:56:09,769 INFO L714 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2020-11-29 18:56:09,770 INFO L594 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2020-11-29 18:56:09,770 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:56:09,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 275 states and 401 transitions. [2020-11-29 18:56:09,775 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2020-11-29 18:56:09,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:56:09,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:56:09,776 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:09,777 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:09,777 INFO L794 eck$LassoCheckResult]: Stem: 894#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 774#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 775#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 855#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 862#L297 assume 0 != main_~tmp~2; 833#L273 ~switchedOnBeforeTS~0 := 0; 834#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 785#L72-1 [2020-11-29 18:56:09,778 INFO L796 eck$LassoCheckResult]: Loop: 785#L72-1 assume !false; 967#L157 assume test_~splverifierCounter~0 < 4; 798#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 799#L166 assume !(0 != test_~tmp~1); 922#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 874#L176 assume !(0 != test_~tmp___0~1); 871#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 771#L186 assume 0 != test_~tmp___2~0; 773#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 931#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 972#L61 assume !(0 != ~pumpRunning~0); 811#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 849#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 934#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 970#L360-3 assume !(0 == ~pumpRunning~0); 936#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 943#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 945#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 785#L72-1 [2020-11-29 18:56:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 18:56:09,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:09,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614689178] [2020-11-29 18:56:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:09,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:09,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:09,927 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1853866315, now seen corresponding path program 1 times [2020-11-29 18:56:09,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:09,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358503136] [2020-11-29 18:56:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:56:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:56:09,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358503136] [2020-11-29 18:56:09,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:56:09,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:56:09,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898000452] [2020-11-29 18:56:09,950 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:56:09,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:56:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:56:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:56:09,951 INFO L87 Difference]: Start difference. First operand 275 states and 401 transitions. cyclomatic complexity: 129 Second operand 3 states. [2020-11-29 18:56:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:56:10,170 INFO L93 Difference]: Finished difference Result 277 states and 380 transitions. [2020-11-29 18:56:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:56:10,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 380 transitions. [2020-11-29 18:56:10,174 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2020-11-29 18:56:10,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 277 states and 380 transitions. [2020-11-29 18:56:10,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2020-11-29 18:56:10,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2020-11-29 18:56:10,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 277 states and 380 transitions. [2020-11-29 18:56:10,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:56:10,179 INFO L691 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2020-11-29 18:56:10,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states and 380 transitions. [2020-11-29 18:56:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2020-11-29 18:56:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-29 18:56:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 380 transitions. [2020-11-29 18:56:10,189 INFO L714 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2020-11-29 18:56:10,189 INFO L594 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2020-11-29 18:56:10,189 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:56:10,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 380 transitions. [2020-11-29 18:56:10,191 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2020-11-29 18:56:10,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:56:10,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:56:10,192 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:10,193 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:10,193 INFO L794 eck$LassoCheckResult]: Stem: 1497#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1334#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 1335#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1452#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 1468#L297 assume 0 != main_~tmp~2; 1416#L273 ~switchedOnBeforeTS~0 := 0; 1332#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1333#L72-1 [2020-11-29 18:56:10,193 INFO L796 eck$LassoCheckResult]: Loop: 1333#L72-1 assume !false; 1598#L157 assume test_~splverifierCounter~0 < 4; 1597#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 1580#L166 assume !(0 != test_~tmp~1); 1578#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 1577#L176 assume !(0 != test_~tmp___0~1); 1575#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 1573#L186 assume 0 != test_~tmp___2~0; 1572#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1571#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1428#L61 assume !(0 != ~pumpRunning~0); 1429#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1447#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1426#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1427#L360-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1372#L659-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1373#L664-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1437#L531-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1469#L531-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1462#L537-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 1388#L364-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1389#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1603#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 1599#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 1333#L72-1 [2020-11-29 18:56:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 18:56:10,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:10,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639936816] [2020-11-29 18:56:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,328 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2069526743, now seen corresponding path program 1 times [2020-11-29 18:56:10,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:10,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088338629] [2020-11-29 18:56:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:56:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:56:10,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088338629] [2020-11-29 18:56:10,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:56:10,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:56:10,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805207760] [2020-11-29 18:56:10,399 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 18:56:10,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:56:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:56:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:56:10,400 INFO L87 Difference]: Start difference. First operand 277 states and 380 transitions. cyclomatic complexity: 106 Second operand 5 states. [2020-11-29 18:56:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:56:10,775 INFO L93 Difference]: Finished difference Result 1231 states and 1699 transitions. [2020-11-29 18:56:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:56:10,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1231 states and 1699 transitions. [2020-11-29 18:56:10,786 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 851 [2020-11-29 18:56:10,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1231 states to 1231 states and 1699 transitions. [2020-11-29 18:56:10,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1231 [2020-11-29 18:56:10,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1231 [2020-11-29 18:56:10,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1231 states and 1699 transitions. [2020-11-29 18:56:10,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:56:10,802 INFO L691 BuchiCegarLoop]: Abstraction has 1231 states and 1699 transitions. [2020-11-29 18:56:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states and 1699 transitions. [2020-11-29 18:56:10,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 544. [2020-11-29 18:56:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-11-29 18:56:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 738 transitions. [2020-11-29 18:56:10,838 INFO L714 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2020-11-29 18:56:10,838 INFO L594 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2020-11-29 18:56:10,838 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 18:56:10,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 544 states and 738 transitions. [2020-11-29 18:56:10,841 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 386 [2020-11-29 18:56:10,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:56:10,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:56:10,844 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:10,845 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:56:10,845 INFO L794 eck$LassoCheckResult]: Stem: 3045#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2861#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 2862#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2990#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 3012#L297 assume 0 != main_~tmp~2; 2955#L273 ~switchedOnBeforeTS~0 := 0; 2859#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2860#L72-1 [2020-11-29 18:56:10,845 INFO L796 eck$LassoCheckResult]: Loop: 2860#L72-1 assume !false; 3301#L157 assume test_~splverifierCounter~0 < 4; 3302#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 3363#L166 assume !(0 != test_~tmp~1); 3360#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 3359#L176 assume !(0 != test_~tmp___0~1); 3357#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 3356#L186 assume 0 != test_~tmp___2~0; 3355#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3369#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 3368#L61 assume !(0 != ~pumpRunning~0); 3242#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 3076#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 2962#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 2963#L360-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 2904#L659-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2905#L664-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 2974#L531-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 3013#L531-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 3001#L537-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 2921#L364-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 2922#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 3325#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 3324#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3323#L482-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 3304#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 2860#L72-1 [2020-11-29 18:56:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 18:56:10,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:10,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26617306] [2020-11-29 18:56:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash 245333010, now seen corresponding path program 1 times [2020-11-29 18:56:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:10,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611958070] [2020-11-29 18:56:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:10,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:10,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:56:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1720878632, now seen corresponding path program 1 times [2020-11-29 18:56:10,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:56:10,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238097866] [2020-11-29 18:56:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:56:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:11,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:56:11,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:56:11,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:56:11,282 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-29 18:57:25,215 WARN L193 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 18:58:15,406 WARN L193 SmtUtils]: Spent 50.15 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 18:58:15,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:58:15 BoogieIcfgContainer [2020-11-29 18:58:15,702 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:58:15,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:58:15,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:58:15,703 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:58:15,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:08" (3/4) ... [2020-11-29 18:58:15,706 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 18:58:15,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f0dc5682-cba2-446c-bc97-73727f0a92dd/bin/uautomizer/witness.graphml [2020-11-29 18:58:15,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:58:15,823 INFO L168 Benchmark]: Toolchain (without parser) took 129720.39 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 78.3 MB in the beginning and 103.2 MB in the end (delta: -24.8 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,824 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 37.3 MB in the beginning and 37.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:58:15,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.57 ms. Allocated memory is still 111.1 MB. Free memory was 78.1 MB in the beginning and 75.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.55 ms. Allocated memory is still 111.1 MB. Free memory was 75.6 MB in the beginning and 69.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,842 INFO L168 Benchmark]: Boogie Preprocessor took 99.51 ms. Allocated memory is still 111.1 MB. Free memory was 69.9 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,843 INFO L168 Benchmark]: RCFGBuilder took 1463.09 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 65.8 MB in the beginning and 102.3 MB in the end (delta: -36.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,843 INFO L168 Benchmark]: BuchiAutomizer took 127367.71 ms. Allocated memory was 140.5 MB in the beginning and 172.0 MB in the end (delta: 31.5 MB). Free memory was 102.3 MB in the beginning and 105.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 94.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,844 INFO L168 Benchmark]: Witness Printer took 119.16 ms. Allocated memory is still 172.0 MB. Free memory was 105.3 MB in the beginning and 103.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:58:15,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 37.3 MB in the beginning and 37.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.57 ms. Allocated memory is still 111.1 MB. Free memory was 78.1 MB in the beginning and 75.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.55 ms. Allocated memory is still 111.1 MB. Free memory was 75.6 MB in the beginning and 69.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.51 ms. Allocated memory is still 111.1 MB. Free memory was 69.9 MB in the beginning and 65.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1463.09 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 65.8 MB in the beginning and 102.3 MB in the end (delta: -36.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 127367.71 ms. Allocated memory was 140.5 MB in the beginning and 172.0 MB in the end (delta: 31.5 MB). Free memory was 102.3 MB in the beginning and 105.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 94.3 MB. Max. memory is 16.1 GB. * Witness Printer took 119.16 ms. Allocated memory is still 172.0 MB. Free memory was 105.3 MB in the beginning and 103.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 544 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 127.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 125.9s. Construction of modules took 0.5s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 908 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 544 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1056 SDtfs, 2824 SDslu, 2636 SDs, 0 SdLazy, 277 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 156]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14540} State at position 1 is {NULL=0, NULL=0, NULL=14540, NULL=14559, NULL=14557, NULL=0, NULL=14562, NULL=0, methaneLevelCritical=0, NULL=14542, retValue_acc=0, NULL=0, NULL=14549, NULL=0, tmp___1=0, NULL=0, NULL=14550, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@468de7ed=0, cleanupTimeShifts=4, tmp=0, NULL=14547, waterLevel=1, NULL=0, NULL=14556, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=0, tmp=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, tmp=1, NULL=14554, tmp___0=0, NULL=14567, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36c66794=0, NULL=14561, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4946adf2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52d6bda4=60, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cdcbb39=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20e72765=0, head=0, NULL=0, NULL=0, tmp=0, NULL=14565, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a5bb529=0, NULL=14553, tmp=0, retValue_acc=0, NULL=0, NULL=0, NULL=14560, tmp___0=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bc05a0c=0, NULL=0, NULL=14546, tmp=1, NULL=0, NULL=14558, tmp=0, NULL=14552, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, NULL=14548, \result=1, NULL=0, \result=0, NULL=14544, tmp___0=0, \result=0, NULL=14564, NULL=14551, NULL=14568, NULL=14543, NULL=14566, retValue_acc=1, tmp___2=60, splverifierCounter=0, NULL=0, NULL=14555, NULL=14563, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@738af20=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ac0c4ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43439a4e=0, NULL=14541, NULL=0, NULL=0, NULL=14545, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3dfbce44=0, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L213] int cleanupTimeShifts = 4; [L318] int pumpRunning = 0; [L319] int systemActive = 1; [L576] int waterLevel = 1; [L577] int methaneLevelCritical = 0; [L848] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L288] int retValue_acc ; [L289] int tmp ; [L123] int retValue_acc ; [L126] retValue_acc = 1 [L127] return (retValue_acc); [L295] tmp = valid_product() [L297] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L147] int splverifierCounter ; [L148] int tmp ; [L149] int tmp___0 ; [L150] int tmp___1 ; [L151] int tmp___2 ; [L154] splverifierCounter = 0 Loop: [L156] COND TRUE 1 [L158] COND TRUE splverifierCounter < 4 [L164] tmp = __VERIFIER_nondet_int() [L166] COND FALSE !(\read(tmp)) [L174] tmp___0 = __VERIFIER_nondet_int() [L176] COND FALSE !(\read(tmp___0)) [L184] tmp___2 = __VERIFIER_nondet_int() [L186] COND TRUE \read(tmp___2) [L478] int retValue_acc ; [L481] retValue_acc = pumpRunning [L482] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L328] COND FALSE !(\read(pumpRunning)) [L335] COND TRUE \read(systemActive) [L409] int tmp ; [L412] COND FALSE !(\read(pumpRunning)) [L383] int tmp ; [L386] COND FALSE !(\read(pumpRunning)) [L357] int tmp ; [L360] COND TRUE ! pumpRunning [L523] int retValue_acc ; [L524] int tmp ; [L525] int tmp___0 ; [L656] int retValue_acc ; [L659] COND TRUE waterLevel < 2 [L660] retValue_acc = 1 [L661] return (retValue_acc); [L529] tmp = isHighWaterSensorDry() [L531] COND TRUE \read(tmp) [L532] tmp___0 = 0 [L536] retValue_acc = tmp___0 [L537] return (retValue_acc); [L362] tmp = isHighWaterLevel() [L364] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L647] int retValue_acc ; [L650] retValue_acc = waterLevel [L651] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L478] int retValue_acc ; [L481] retValue_acc = pumpRunning [L482] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...