./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.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_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/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 8e882693bcbcb1a63ff9494a2e39acf2974fbfcd ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:44:57,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:44:57,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:44:57,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:44:57,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:44:57,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:44:57,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:44:57,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:44:57,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:44:57,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:44:57,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:44:57,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:44:57,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:44:57,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:44:57,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:44:57,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:44:57,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:44:57,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:44:57,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:44:57,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:44:57,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:44:57,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:44:57,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:44:57,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:44:57,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:44:57,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:44:57,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:44:57,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:44:57,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:44:57,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:44:57,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:44:57,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:44:57,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:44:57,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:44:57,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:44:57,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:44:57,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:44:57,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:44:57,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:44:57,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:44:57,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:44:57,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:44:58,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:44:58,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:44:58,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:44:58,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:44:58,034 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:44:58,034 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:44:58,034 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:44:58,034 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:44:58,035 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:44:58,035 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:44:58,036 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:44:58,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:44:58,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:44:58,037 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:44:58,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:44:58,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:44:58,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:44:58,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:44:58,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:44:58,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:44:58,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:44:58,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:44:58,040 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:44:58,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:44:58,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:44:58,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:44:58,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:44:58,041 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:44:58,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:44:58,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:44:58,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:44:58,042 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:44:58,043 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:44:58,044 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_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e882693bcbcb1a63ff9494a2e39acf2974fbfcd [2020-11-29 20:44:58,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:44:58,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:44:58,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:44:58,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:44:58,428 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:44:58,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2020-11-29 20:44:58,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/data/54b027126/477b506510544d64858330e5e046faba/FLAG6a6dcc82d [2020-11-29 20:44:59,207 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:44:59,211 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2020-11-29 20:44:59,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/data/54b027126/477b506510544d64858330e5e046faba/FLAG6a6dcc82d [2020-11-29 20:44:59,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/data/54b027126/477b506510544d64858330e5e046faba [2020-11-29 20:44:59,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:44:59,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:44:59,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:44:59,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:44:59,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:44:59,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:44:59" (1/1) ... [2020-11-29 20:44:59,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3599df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:44:59, skipping insertion in model container [2020-11-29 20:44:59,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:44:59" (1/1) ... [2020-11-29 20:44:59,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:44:59,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:44:59,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:44:59,993 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:45:00,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:45:00,167 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:45:00,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00 WrapperNode [2020-11-29 20:45:00,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:45:00,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:45:00,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:45:00,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:45:00,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:45:00,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:45:00,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:45:00,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:45:00,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... [2020-11-29 20:45:00,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:45:00,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:45:00,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:45:00,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:45:00,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:45:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:45:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:45:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:45:00,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:45:01,992 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:45:01,993 INFO L298 CfgBuilder]: Removed 296 assume(true) statements. [2020-11-29 20:45:01,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:01 BoogieIcfgContainer [2020-11-29 20:45:01,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:45:01,996 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:45:01,996 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:45:02,000 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:45:02,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:45:02,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:44:59" (1/3) ... [2020-11-29 20:45:02,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f9157b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:45:02, skipping insertion in model container [2020-11-29 20:45:02,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:45:02,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:45:00" (2/3) ... [2020-11-29 20:45:02,003 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f9157b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:45:02, skipping insertion in model container [2020-11-29 20:45:02,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:45:02,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:01" (3/3) ... [2020-11-29 20:45:02,005 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-11-29 20:45:02,049 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:45:02,049 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:45:02,050 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:45:02,050 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:45:02,050 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:45:02,050 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:45:02,050 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:45:02,050 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:45:02,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states. [2020-11-29 20:45:02,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 20:45:02,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:45:02,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:45:02,128 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:02,128 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:02,128 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:45:02,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states. [2020-11-29 20:45:02,139 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 20:45:02,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:45:02,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:45:02,140 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:02,140 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:02,145 INFO L794 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 4#L-1true havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 113#L671true 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; 199#L679true main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 90#L886true assume 0 != main_~tmp~10; 30#L862true ~switchedOnBeforeTS~0 := 0; 38#L760true havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 107#L781-1true [2020-11-29 20:45:02,146 INFO L796 eck$LassoCheckResult]: Loop: 107#L781-1true assume !false; 7#L698true assume test_~splverifierCounter~0 < 4; 77#L699true test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 167#L707true assume !(0 != test_~tmp~8); 169#L707-1true test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 116#L717true assume !(0 != test_~tmp___0~2); 119#L717-1true test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 40#L727true assume 0 != test_~tmp___2~0; 138#L733-2true havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 61#L567true __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 106#L770true assume !(0 != ~pumpRunning~0); 143#L430true assume !(0 != ~systemActive~0); 196#L437true havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 8#L984true __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 105#L781true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 107#L781-1true [2020-11-29 20:45:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 20:45:02,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:02,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102143152] [2020-11-29 20:45:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:02,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:02,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:02,650 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 99399406, now seen corresponding path program 1 times [2020-11-29 20:45:02,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379350596] [2020-11-29 20:45:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:02,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:02,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:02,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:02,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2033424616, now seen corresponding path program 1 times [2020-11-29 20:45:02,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:02,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267477027] [2020-11-29 20:45:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:02,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267477027] [2020-11-29 20:45:02,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:02,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:45:02,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777348394] [2020-11-29 20:45:03,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:03,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:45:03,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:45:03,060 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 6 states. [2020-11-29 20:45:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:03,381 INFO L93 Difference]: Finished difference Result 195 states and 286 transitions. [2020-11-29 20:45:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:45:03,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 286 transitions. [2020-11-29 20:45:03,388 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 20:45:03,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 188 states and 279 transitions. [2020-11-29 20:45:03,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2020-11-29 20:45:03,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2020-11-29 20:45:03,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 279 transitions. [2020-11-29 20:45:03,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:45:03,400 INFO L691 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 20:45:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 279 transitions. [2020-11-29 20:45:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-29 20:45:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 20:45:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 279 transitions. [2020-11-29 20:45:03,440 INFO L714 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 20:45:03,440 INFO L594 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 20:45:03,440 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:45:03,441 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 279 transitions. [2020-11-29 20:45:03,445 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 20:45:03,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:45:03,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:45:03,447 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:03,447 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:03,447 INFO L794 eck$LassoCheckResult]: Stem: 554#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 413#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 414#L671 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; 598#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 584#L886 assume 0 != main_~tmp~10; 514#L862 ~switchedOnBeforeTS~0 := 0; 515#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 416#L781-1 [2020-11-29 20:45:03,447 INFO L796 eck$LassoCheckResult]: Loop: 416#L781-1 assume !false; 419#L698 assume test_~splverifierCounter~0 < 4; 420#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 563#L707 assume !(0 != test_~tmp~8); 568#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 430#L717 assume !(0 != test_~tmp___0~2); 432#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 437#L727 assume 0 != test_~tmp___2~0; 484#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 496#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 545#L770 assume !(0 != ~pumpRunning~0); 449#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 505#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 487#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 489#L462-3 assume !(0 == ~pumpRunning~0); 486#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 424#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 425#L781 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 416#L781-1 [2020-11-29 20:45:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:03,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 20:45:03,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:03,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465569996] [2020-11-29 20:45:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:03,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:03,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:03,567 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash -416203936, now seen corresponding path program 1 times [2020-11-29 20:45:03,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:03,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814372661] [2020-11-29 20:45:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814372661] [2020-11-29 20:45:03,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:03,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:45:03,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233865880] [2020-11-29 20:45:03,591 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:45:03,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:45:03,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:45:03,592 INFO L87 Difference]: Start difference. First operand 188 states and 279 transitions. cyclomatic complexity: 93 Second operand 3 states. [2020-11-29 20:45:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:03,966 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2020-11-29 20:45:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:45:03,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 278 transitions. [2020-11-29 20:45:03,970 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2020-11-29 20:45:03,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 278 transitions. [2020-11-29 20:45:03,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2020-11-29 20:45:03,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2020-11-29 20:45:03,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 278 transitions. [2020-11-29 20:45:03,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:45:03,978 INFO L691 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 20:45:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 278 transitions. [2020-11-29 20:45:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-11-29 20:45:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-11-29 20:45:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2020-11-29 20:45:04,001 INFO L714 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 20:45:04,001 INFO L594 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 20:45:04,001 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:45:04,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2020-11-29 20:45:04,004 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2020-11-29 20:45:04,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:45:04,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:45:04,009 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:04,010 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:04,011 INFO L794 eck$LassoCheckResult]: Stem: 932#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 808#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 809#L671 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; 964#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 951#L886 assume 0 != main_~tmp~10; 900#L862 ~switchedOnBeforeTS~0 := 0; 901#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 811#L781-1 [2020-11-29 20:45:04,011 INFO L796 eck$LassoCheckResult]: Loop: 811#L781-1 assume !false; 814#L698 assume test_~splverifierCounter~0 < 4; 815#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 938#L707 assume !(0 != test_~tmp~8); 941#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 823#L717 assume !(0 != test_~tmp___0~2); 825#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 832#L727 assume 0 != test_~tmp___2~0; 871#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 883#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 926#L770 assume !(0 != ~pumpRunning~0); 890#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 891#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 876#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 877#L462-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 842#L992-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 843#L997-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 895#L616-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 933#L616-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 928#L622-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 887#L466-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 875#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 819#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 820#L781 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 811#L781-1 [2020-11-29 20:45:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 20:45:04,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:04,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665891928] [2020-11-29 20:45:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1258364780, now seen corresponding path program 1 times [2020-11-29 20:45:04,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:04,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161568088] [2020-11-29 20:45:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:45:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:45:04,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161568088] [2020-11-29 20:45:04,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:45:04,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:45:04,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706411483] [2020-11-29 20:45:04,242 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:45:04,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:45:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:45:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:45:04,243 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-29 20:45:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:45:04,533 INFO L93 Difference]: Finished difference Result 577 states and 781 transitions. [2020-11-29 20:45:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:45:04,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 577 states and 781 transitions. [2020-11-29 20:45:04,540 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 367 [2020-11-29 20:45:04,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 577 states to 577 states and 781 transitions. [2020-11-29 20:45:04,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 577 [2020-11-29 20:45:04,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 577 [2020-11-29 20:45:04,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 577 states and 781 transitions. [2020-11-29 20:45:04,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:45:04,561 INFO L691 BuchiCegarLoop]: Abstraction has 577 states and 781 transitions. [2020-11-29 20:45:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states and 781 transitions. [2020-11-29 20:45:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 395. [2020-11-29 20:45:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-11-29 20:45:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 532 transitions. [2020-11-29 20:45:04,600 INFO L714 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2020-11-29 20:45:04,600 INFO L594 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2020-11-29 20:45:04,600 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:45:04,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 395 states and 532 transitions. [2020-11-29 20:45:04,603 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 276 [2020-11-29 20:45:04,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:45:04,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:45:04,607 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:04,607 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:45:04,607 INFO L794 eck$LassoCheckResult]: Stem: 1732#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1602#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 1603#L671 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; 1772#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 1755#L886 assume 0 != main_~tmp~10; 1694#L862 ~switchedOnBeforeTS~0 := 0; 1695#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1605#L781-1 [2020-11-29 20:45:04,607 INFO L796 eck$LassoCheckResult]: Loop: 1605#L781-1 assume !false; 1608#L698 assume test_~splverifierCounter~0 < 4; 1609#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 1984#L707 assume !(0 != test_~tmp~8); 1983#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 1981#L717 assume !(0 != test_~tmp___0~2); 1978#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 1976#L727 assume 0 != test_~tmp___2~0; 1974#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1973#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 1972#L770 assume !(0 != ~pumpRunning~0); 1960#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1768#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 1671#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1672#L462-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1637#L992-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1638#L997-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 1690#L616-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 1733#L616-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1728#L622-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 1682#L466-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1670#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1953#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 1766#L781 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1767#L567-1 __utac_acc__Specification5_spec__3_#t~ret71 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret71;havoc __utac_acc__Specification5_spec__3_#t~ret71; 1700#L785 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1605#L781-1 [2020-11-29 20:45:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:04,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 20:45:04,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:04,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421905874] [2020-11-29 20:45:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,703 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1892234553, now seen corresponding path program 1 times [2020-11-29 20:45:04,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:04,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289645572] [2020-11-29 20:45:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,736 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:45:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 436521101, now seen corresponding path program 1 times [2020-11-29 20:45:04,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:45:04,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048038902] [2020-11-29 20:45:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:45:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:45:04,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:45:04,830 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:45:05,060 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-29 20:46:21,368 WARN L193 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 20:47:15,012 WARN L193 SmtUtils]: Spent 53.61 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 20:47:15,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:47:15 BoogieIcfgContainer [2020-11-29 20:47:15,346 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:47:15,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:47:15,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:47:15,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:47:15,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:45:01" (3/4) ... [2020-11-29 20:47:15,351 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:47:15,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57ed2f05-f92a-479f-b4aa-1d4d7d163daa/bin/uautomizer/witness.graphml [2020-11-29 20:47:15,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:47:15,444 INFO L168 Benchmark]: Toolchain (without parser) took 135996.76 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 76.5 MB in the beginning and 72.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,446 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:47:15,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.43 ms. Allocated memory is still 111.1 MB. Free memory was 76.3 MB in the beginning and 74.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.01 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 69.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,448 INFO L168 Benchmark]: Boogie Preprocessor took 118.83 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 66.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,449 INFO L168 Benchmark]: RCFGBuilder took 1572.47 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 65.6 MB in the beginning and 61.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,454 INFO L168 Benchmark]: BuchiAutomizer took 133350.63 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 60.7 MB in the beginning and 75.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,457 INFO L168 Benchmark]: Witness Printer took 95.51 ms. Allocated memory is still 161.5 MB. Free memory was 75.0 MB in the beginning and 72.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:15,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 706.43 ms. Allocated memory is still 111.1 MB. Free memory was 76.3 MB in the beginning and 74.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 131.01 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 69.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.83 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 66.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1572.47 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 65.6 MB in the beginning and 61.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 133350.63 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 60.7 MB in the beginning and 75.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * Witness Printer took 95.51 ms. Allocated memory is still 161.5 MB. Free memory was 75.0 MB in the beginning and 72.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 395 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 133.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 131.9s. Construction of modules took 0.6s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 182 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 395 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 838 SDtfs, 1725 SDslu, 829 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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: 697]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14914} State at position 1 is {retValue_acc=1, NULL=0, NULL=34397, NULL=14914, methaneLevelCritical=0, NULL=34413, NULL=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=34420, NULL=0, NULL=34402, NULL=14916, cleanupTimeShifts=4, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18b5ec58=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7229e0a4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67f2c6b4=0, NULL=34415, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6181a913=0, NULL=34404, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=14917, NULL=0, NULL=0, tmp___0=0, NULL=34421, NULL=34401, tmp=1, NULL=34408, NULL=14915, head=0, NULL=0, NULL=0, tmp=0, NULL=34411, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2278a458=0, NULL=0, NULL=34416, retValue_acc=0, NULL=34417, NULL=0, tmp=1, tmp___0=0, NULL=34410, tmp=0, NULL=0, NULL=34412, tmp=0, NULL=34398, switchedOnBeforeTS=0, NULL=34418, \result=0, NULL=34403, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ca0dd2c=0, NULL=34400, \result=0, NULL=34405, NULL=0, NULL=0, NULL=0, NULL=34409, NULL=34414, \result=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57021392=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65a42463=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70770f33=57, NULL=0, NULL=34419, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2861757d=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4917e59e=0, NULL=34399, retValue_acc=1, tmp___2=57, splverifierCounter=0, NULL=0, NULL=0, NULL=34406, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34aea2a9=0, NULL=34407, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L418] int pumpRunning = 0; [L419] int systemActive = 1; [L754] int switchedOnBeforeTS ; [L803] int cleanupTimeShifts = 4; [L909] int waterLevel = 1; [L910] int methaneLevelCritical = 0; [L877] int retValue_acc ; [L878] int tmp ; [L675] int retValue_acc ; [L678] retValue_acc = 1 [L679] return (retValue_acc); [L884] tmp = valid_product() [L886] COND TRUE \read(tmp) [L759] switchedOnBeforeTS = 0 [L688] int splverifierCounter ; [L689] int tmp ; [L690] int tmp___0 ; [L691] int tmp___1 ; [L692] int tmp___2 ; [L695] splverifierCounter = 0 Loop: [L697] COND TRUE 1 [L699] COND TRUE splverifierCounter < 4 [L705] tmp = __VERIFIER_nondet_int() [L707] COND FALSE !(\read(tmp)) [L715] tmp___0 = __VERIFIER_nondet_int() [L717] COND FALSE !(\read(tmp___0)) [L725] tmp___2 = __VERIFIER_nondet_int() [L727] COND TRUE \read(tmp___2) [L563] int retValue_acc ; [L566] retValue_acc = pumpRunning [L567] return (retValue_acc); [L768] switchedOnBeforeTS = isPumpRunning() [L430] COND FALSE !(\read(pumpRunning)) [L437] COND TRUE \read(systemActive) [L511] int tmp ; [L514] COND FALSE !(\read(pumpRunning)) [L485] int tmp ; [L488] COND FALSE !(\read(pumpRunning)) [L459] int tmp ; [L462] COND TRUE ! pumpRunning [L608] int retValue_acc ; [L609] int tmp ; [L610] int tmp___0 ; [L989] int retValue_acc ; [L992] COND TRUE waterLevel < 2 [L993] retValue_acc = 1 [L994] return (retValue_acc); [L614] tmp = isHighWaterSensorDry() [L616] COND TRUE \read(tmp) [L617] tmp___0 = 0 [L621] retValue_acc = tmp___0 [L622] return (retValue_acc); [L464] tmp = isHighWaterLevel() [L466] COND FALSE !(\read(tmp)) [L774] int tmp ; [L775] int tmp___0 ; [L980] int retValue_acc ; [L983] retValue_acc = waterLevel [L984] return (retValue_acc); [L779] tmp = getWaterLevel() [L781] COND TRUE tmp != 2 [L563] int retValue_acc ; [L566] retValue_acc = pumpRunning [L567] return (retValue_acc); [L783] tmp___0 = isPumpRunning() [L785] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...