./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.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_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/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 3bccdc584252d8769fe0e51833273c5645b3ab26 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:14:41,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:41,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:41,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:41,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:41,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:41,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:41,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:41,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:41,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:41,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:41,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:41,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:41,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:41,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:41,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:41,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:41,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:41,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:41,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:41,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:41,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:41,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:41,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:41,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:41,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:41,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:41,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:41,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:41,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:41,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:41,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:41,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:41,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:41,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:41,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:41,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:41,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:41,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:41,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:41,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:41,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:14:41,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:41,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:41,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:41,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:41,533 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:41,533 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:14:41,533 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:14:41,533 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:14:41,533 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:14:41,534 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:14:41,535 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:14:41,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:41,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:41,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:14:41,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:41,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:41,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:41,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:14:41,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:14:41,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:14:41,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:41,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:41,537 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:14:41,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:41,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:14:41,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:41,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:41,555 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:14:41,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:41,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:41,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:41,557 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:14:41,559 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:14:41,559 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_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bccdc584252d8769fe0e51833273c5645b3ab26 [2020-11-30 00:14:41,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:41,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:41,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:41,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:41,939 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:41,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2020-11-30 00:14:42,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/data/4ac50dc7e/bcefd77c5b434439979f760cf3a26a2f/FLAG13048c7ed [2020-11-30 00:14:42,794 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:42,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2020-11-30 00:14:42,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/data/4ac50dc7e/bcefd77c5b434439979f760cf3a26a2f/FLAG13048c7ed [2020-11-30 00:14:43,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/data/4ac50dc7e/bcefd77c5b434439979f760cf3a26a2f [2020-11-30 00:14:43,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:43,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:43,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:43,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:43,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:43,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f28e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43, skipping insertion in model container [2020-11-30 00:14:43,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:43,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:43,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:43,605 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:43,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:43,758 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:43,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43 WrapperNode [2020-11-30 00:14:43,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:43,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:43,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:43,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:43,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:43,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:43,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:43,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:43,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:43,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:44,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:44,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:44,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... [2020-11-30 00:14:44,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:44,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:44,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:44,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:44,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:14:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:45,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:45,875 INFO L298 CfgBuilder]: Removed 362 assume(true) statements. [2020-11-30 00:14:45,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:45 BoogieIcfgContainer [2020-11-30 00:14:45,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:45,879 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:14:45,879 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:14:45,883 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:14:45,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:14:45,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:14:43" (1/3) ... [2020-11-30 00:14:45,886 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a6765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:14:45, skipping insertion in model container [2020-11-30 00:14:45,886 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:14:45,886 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:43" (2/3) ... [2020-11-30 00:14:45,887 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a6765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:14:45, skipping insertion in model container [2020-11-30 00:14:45,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:14:45,887 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:45" (3/3) ... [2020-11-30 00:14:45,889 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2020-11-30 00:14:45,937 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:14:45,937 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:14:45,937 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:14:45,937 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:45,937 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:45,937 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:14:45,937 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:45,937 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:14:45,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-30 00:14:45,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-30 00:14:45,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:14:45,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:14:46,009 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:46,009 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:46,009 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:14:46,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states. [2020-11-30 00:14:46,025 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 151 [2020-11-30 00:14:46,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:14:46,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:14:46,034 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:46,034 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:46,057 INFO L794 eck$LassoCheckResult]: Stem: 79#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 5#L-1true havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 4#L588true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 112#L596true main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 205#L1004true assume 0 != main_~tmp~11; 144#L981true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 168#L69-1true [2020-11-30 00:14:46,058 INFO L796 eck$LassoCheckResult]: Loop: 168#L69-1true assume !false; 103#L866true assume test_~splverifierCounter~0 < 4; 169#L867true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 84#L875true assume !(0 != test_~tmp~10); 86#L875-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 22#L885true assume !(0 != test_~tmp___0~3); 6#L885-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 157#L895true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 75#L903-2true assume !(0 != ~pumpRunning~0); 231#L613true assume !(0 != ~systemActive~0); 62#L620true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 188#L503-5true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 183#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 168#L69-1true [2020-11-30 00:14:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:14:46,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:46,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850140810] [2020-11-30 00:14:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:46,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:46,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:46,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1674172490, now seen corresponding path program 1 times [2020-11-30 00:14:46,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:46,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116231754] [2020-11-30 00:14:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:46,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116231754] [2020-11-30 00:14:46,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:46,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:46,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679331128] [2020-11-30 00:14:46,825 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:14:46,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:46,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:46,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:46,850 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 3 states. [2020-11-30 00:14:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:46,949 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2020-11-30 00:14:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:46,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 332 transitions. [2020-11-30 00:14:46,967 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-30 00:14:46,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2020-11-30 00:14:46,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2020-11-30 00:14:46,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2020-11-30 00:14:46,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2020-11-30 00:14:46,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:14:46,984 INFO L691 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-30 00:14:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2020-11-30 00:14:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-11-30 00:14:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-30 00:14:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2020-11-30 00:14:47,054 INFO L714 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-30 00:14:47,054 INFO L594 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-11-30 00:14:47,055 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:14:47,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2020-11-30 00:14:47,065 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2020-11-30 00:14:47,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:14:47,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:14:47,068 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:47,068 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:47,068 INFO L794 eck$LassoCheckResult]: Stem: 592#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 472#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 470#L588 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 471#L596 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 652#L1004 assume 0 != main_~tmp~11; 668#L981 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 649#L69-1 [2020-11-30 00:14:47,068 INFO L796 eck$LassoCheckResult]: Loop: 649#L69-1 assume !false; 639#L866 assume test_~splverifierCounter~0 < 4; 640#L867 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 601#L875 assume !(0 != test_~tmp~10); 603#L875-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 502#L885 assume !(0 != test_~tmp___0~3); 473#L885-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 474#L895 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 589#L903-2 assume !(0 != ~pumpRunning~0); 550#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 561#L697 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 562#L671-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 610#L645-3 assume !(0 == ~pumpRunning~0); 565#L620 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 574#L503-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 678#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 649#L69-1 [2020-11-30 00:14:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:47,069 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:14:47,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:47,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993878905] [2020-11-30 00:14:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,295 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:47,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1243674316, now seen corresponding path program 1 times [2020-11-30 00:14:47,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:47,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384978778] [2020-11-30 00:14:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:47,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384978778] [2020-11-30 00:14:47,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:47,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109252047] [2020-11-30 00:14:47,326 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:14:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:47,327 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-11-30 00:14:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:47,570 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2020-11-30 00:14:47,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:47,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2020-11-30 00:14:47,575 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2020-11-30 00:14:47,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2020-11-30 00:14:47,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2020-11-30 00:14:47,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2020-11-30 00:14:47,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2020-11-30 00:14:47,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:14:47,582 INFO L691 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-30 00:14:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2020-11-30 00:14:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-11-30 00:14:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-11-30 00:14:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2020-11-30 00:14:47,595 INFO L714 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-30 00:14:47,595 INFO L594 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2020-11-30 00:14:47,596 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:14:47,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2020-11-30 00:14:47,598 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2020-11-30 00:14:47,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:14:47,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:14:47,600 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:47,600 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] [2020-11-30 00:14:47,600 INFO L794 eck$LassoCheckResult]: Stem: 1064#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 940#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 926#L588 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 927#L596 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 941#L1004 assume 0 != main_~tmp~11; 1022#L981 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 937#L69-1 [2020-11-30 00:14:47,601 INFO L796 eck$LassoCheckResult]: Loop: 937#L69-1 assume !false; 922#L866 assume test_~splverifierCounter~0 < 4; 923#L867 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1058#L875 assume !(0 != test_~tmp~10); 1074#L875-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 969#L885 assume !(0 != test_~tmp___0~3); 942#L885-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 943#L895 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1052#L903-2 assume !(0 != ~pumpRunning~0); 1057#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1038#L697 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1039#L671-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1004#L645-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1005#L543-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1030#L548-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 948#L816-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 949#L816-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 954#L822-3 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1086#L649-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1006#L620 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1045#L503-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1077#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 937#L69-1 [2020-11-30 00:14:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:14:47,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:47,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249663747] [2020-11-30 00:14:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,733 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:47,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1113090816, now seen corresponding path program 1 times [2020-11-30 00:14:47,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:47,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086100636] [2020-11-30 00:14:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:47,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:47,751 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:47,752 INFO L82 PathProgramCache]: Analyzing trace with hash 140214310, now seen corresponding path program 1 times [2020-11-30 00:14:47,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:47,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139525817] [2020-11-30 00:14:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:47,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139525817] [2020-11-30 00:14:47,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:47,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:47,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798855656] [2020-11-30 00:14:48,046 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-30 00:14:48,175 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-30 00:14:48,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:48,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:48,198 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand 5 states. [2020-11-30 00:14:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:48,786 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2020-11-30 00:14:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:14:48,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2020-11-30 00:14:48,798 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2020-11-30 00:14:48,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2020-11-30 00:14:48,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2020-11-30 00:14:48,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2020-11-30 00:14:48,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2020-11-30 00:14:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:14:48,824 INFO L691 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2020-11-30 00:14:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2020-11-30 00:14:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2020-11-30 00:14:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-11-30 00:14:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2020-11-30 00:14:48,870 INFO L714 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2020-11-30 00:14:48,871 INFO L594 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2020-11-30 00:14:48,871 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:14:48,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2020-11-30 00:14:48,875 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2020-11-30 00:14:48,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:14:48,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:14:48,878 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:48,879 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] [2020-11-30 00:14:48,879 INFO L794 eck$LassoCheckResult]: Stem: 2073#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~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1929#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1914#L588 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1915#L596 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 1930#L1004 assume 0 != main_~tmp~11; 2015#L981 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2016#L69-1 [2020-11-30 00:14:48,879 INFO L796 eck$LassoCheckResult]: Loop: 2016#L69-1 assume !false; 1910#L866 assume test_~splverifierCounter~0 < 4; 1911#L867 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 2219#L875 assume !(0 != test_~tmp~10); 2210#L875-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 2209#L885 assume !(0 != test_~tmp___0~3); 2206#L885-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 2204#L895 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2201#L903-2 assume !(0 != ~pumpRunning~0); 2174#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2198#L697 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 2169#L671-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2197#L645-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 2025#L543-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 2026#L548-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 1937#L816-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1938#L816-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1944#L822-3 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 2098#L649-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1998#L620 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 2095#L503-5 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2096#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 2000#L535 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2001#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2016#L69-1 [2020-11-30 00:14:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-30 00:14:48,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:48,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357458195] [2020-11-30 00:14:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:48,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:49,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,045 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash -233404716, now seen corresponding path program 1 times [2020-11-30 00:14:49,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:49,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558079900] [2020-11-30 00:14:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:49,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:49,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,085 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1601978490, now seen corresponding path program 1 times [2020-11-30 00:14:49,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:49,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293080003] [2020-11-30 00:14:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:49,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:49,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:49,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:49,441 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-30 00:16:35,708 WARN L193 SmtUtils]: Spent 1.77 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:17:27,371 WARN L193 SmtUtils]: Spent 51.64 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:17:27,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:17:27 BoogieIcfgContainer [2020-11-30 00:17:27,618 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:17:27,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:17:27,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:17:27,620 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:17:27,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:45" (3/4) ... [2020-11-30 00:17:27,639 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:17:27,699 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_62c1722d-9c00-49b7-9a3f-3143a8dd1c6d/bin/uautomizer/witness.graphml [2020-11-30 00:17:27,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:17:27,705 INFO L168 Benchmark]: Toolchain (without parser) took 164607.59 ms. Allocated memory was 88.1 MB in the beginning and 174.1 MB in the end (delta: 86.0 MB). Free memory was 66.4 MB in the beginning and 137.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 111.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,705 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:17:27,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.56 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 43.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 153.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.9 MB in the beginning and 38.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,707 INFO L168 Benchmark]: Boogie Preprocessor took 133.42 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 89.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,708 INFO L168 Benchmark]: RCFGBuilder took 1828.13 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 49.4 MB in the end (delta: 40.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,709 INFO L168 Benchmark]: BuchiAutomizer took 161739.48 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 49.4 MB in the beginning and 42.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,709 INFO L168 Benchmark]: Witness Printer took 83.25 ms. Allocated memory is still 174.1 MB. Free memory was 42.9 MB in the beginning and 137.2 MB in the end (delta: -94.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:17:27,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 658.56 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 43.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 153.70 ms. Allocated memory is still 88.1 MB. Free memory was 43.9 MB in the beginning and 38.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 133.42 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 89.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1828.13 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 49.4 MB in the end (delta: 40.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 161739.48 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 49.4 MB in the beginning and 42.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. * Witness Printer took 83.25 ms. Allocated memory is still 174.1 MB. Free memory was 42.9 MB in the beginning and 137.2 MB in the end (delta: -94.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 161.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 160.3s. 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 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 917 SDtfs, 1517 SDslu, 1203 SDs, 0 SdLazy, 204 SolverSat, 88 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: 865]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=32685} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=32685, NULL=58040, NULL=0, NULL=0, NULL=58027, methaneLevelCritical=0, NULL=0, NULL=58021, NULL=58038, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@122eb878=0, NULL=58032, NULL=0, NULL=32687, tmp=0, cleanupTimeShifts=4, NULL=58034, tmp=1, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e5978fc=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=58043, NULL=0, NULL=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, retValue_acc=1, NULL=58024, NULL=58044, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55261feb=0, head=0, NULL=0, tmp=0, NULL=58028, NULL=0, NULL=0, NULL=0, NULL=58030, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e021ef3=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e94bbb8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1569747b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b0c9e41=0, NULL=32688, NULL=58042, NULL=58020, tmp___0=0, NULL=58031, NULL=0, NULL=0, tmp___0=1, NULL=58033, tmp=0, NULL=58022, NULL=58036, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60e725d=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41c8853b=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fb02a1f=62, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1325dd75=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=58025, retValue_acc=0, \result=0, NULL=58039, NULL=58023, NULL=58026, retValue_acc=1, NULL=58037, tmp=0, tmp___2=62, splverifierCounter=0, NULL=0, \result=0, NULL=58035, NULL=58041, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ed71b37=0, NULL=32686, NULL=58029, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L460] int waterLevel = 1; [L461] int methaneLevelCritical = 0; [L606] int pumpRunning = 0; [L607] int systemActive = 1; [L922] int cleanupTimeShifts = 4; [L995] int retValue_acc ; [L996] int tmp ; [L592] int retValue_acc ; [L595] retValue_acc = 1 [L596] return (retValue_acc); [L1002] tmp = valid_product() [L1004] COND TRUE \read(tmp) [L856] int splverifierCounter ; [L857] int tmp ; [L858] int tmp___0 ; [L859] int tmp___1 ; [L860] int tmp___2 ; [L863] splverifierCounter = 0 Loop: [L865] COND TRUE 1 [L867] COND TRUE splverifierCounter < 4 [L873] tmp = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp)) [L883] tmp___0 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___0)) [L893] tmp___2 = __VERIFIER_nondet_int() [L895] COND TRUE \read(tmp___2) [L849] systemActive = 1 [L613] COND FALSE !(\read(pumpRunning)) [L620] COND TRUE \read(systemActive) [L694] int tmp ; [L697] COND FALSE !(\read(pumpRunning)) [L668] int tmp ; [L671] COND FALSE !(\read(pumpRunning)) [L642] int tmp ; [L645] COND TRUE ! pumpRunning [L808] int retValue_acc ; [L809] int tmp ; [L810] int tmp___0 ; [L540] int retValue_acc ; [L543] COND TRUE waterLevel < 2 [L544] retValue_acc = 1 [L545] return (retValue_acc); [L814] tmp = isHighWaterSensorDry() [L816] COND TRUE \read(tmp) [L817] tmp___0 = 0 [L821] retValue_acc = tmp___0 [L822] return (retValue_acc); [L647] tmp = isHighWaterLevel() [L649] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L499] int retValue_acc ; [L502] retValue_acc = methaneLevelCritical [L503] return (retValue_acc); [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L531] int retValue_acc ; [L534] retValue_acc = waterLevel [L535] return (retValue_acc); [L67] tmp___0 = getWaterLevel() [L69] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...