./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d4f2c10412898020e67c12179bced9360b20e7f0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:24:57,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:24:57,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:24:57,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:24:58,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:24:58,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:24:58,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:24:58,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:24:58,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:24:58,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:24:58,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:24:58,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:24:58,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:24:58,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:24:58,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:24:58,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:24:58,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:24:58,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:24:58,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:24:58,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:24:58,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:24:58,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:24:58,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:24:58,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:24:58,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:24:58,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:24:58,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:24:58,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:24:58,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:24:58,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:24:58,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:24:58,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:24:58,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:24:58,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:24:58,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:24:58,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:24:58,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:24:58,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:24:58,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:24:58,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:24:58,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:24:58,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:24:58,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:24:58,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:24:58,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:24:58,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:24:58,074 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:24:58,075 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:24:58,075 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:24:58,075 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:24:58,075 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:24:58,075 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:24:58,076 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:24:58,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:24:58,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:24:58,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:24:58,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:24:58,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:24:58,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:24:58,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:24:58,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:24:58,080 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:24:58,080 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4f2c10412898020e67c12179bced9360b20e7f0 [2021-07-06 20:24:58,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:24:58,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:24:58,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:24:58,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:24:58,383 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:24:58,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2021-07-06 20:24:58,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affe442db/2af6efc73cd143088084762e88ae13d2/FLAGc74b815b3 [2021-07-06 20:24:58,870 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:24:58,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2021-07-06 20:24:58,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affe442db/2af6efc73cd143088084762e88ae13d2/FLAGc74b815b3 [2021-07-06 20:24:58,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/affe442db/2af6efc73cd143088084762e88ae13d2 [2021-07-06 20:24:58,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:24:58,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:24:58,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:24:58,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:24:58,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:24:58,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:24:58" (1/1) ... [2021-07-06 20:24:58,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403fdb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:58, skipping insertion in model container [2021-07-06 20:24:58,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:24:58" (1/1) ... [2021-07-06 20:24:58,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:24:58,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:24:59,088 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-07-06 20:24:59,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:24:59,178 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:24:59,195 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-07-06 20:24:59,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:24:59,268 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:24:59,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59 WrapperNode [2021-07-06 20:24:59,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:24:59,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:24:59,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:24:59,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:24:59,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:24:59,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:24:59,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:24:59,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:24:59,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:24:59,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:24:59,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:24:59,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:24:59,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (1/1) ... [2021-07-06 20:24:59,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:24:59,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:24:59,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:24:59,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:24:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:24:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:24:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:24:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:25:00,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:25:00,016 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-07-06 20:25:00,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:00 BoogieIcfgContainer [2021-07-06 20:25:00,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:25:00,019 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:25:00,019 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:25:00,021 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:25:00,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:00,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:24:58" (1/3) ... [2021-07-06 20:25:00,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b266694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:00, skipping insertion in model container [2021-07-06 20:25:00,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:00,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:59" (2/3) ... [2021-07-06 20:25:00,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b266694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:00, skipping insertion in model container [2021-07-06 20:25:00,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:00,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:00" (3/3) ... [2021-07-06 20:25:00,024 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2021-07-06 20:25:00,058 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:25:00,058 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:25:00,058 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:25:00,058 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:25:00,058 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:25:00,058 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:25:00,059 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:25:00,059 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:25:00,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,092 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-07-06 20:25:00,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:00,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:00,098 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,098 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,098 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:25:00,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,111 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-07-06 20:25:00,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:00,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:00,112 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,112 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,116 INFO L791 eck$LassoCheckResult]: Stem: 31#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 12#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 70#L580true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 8#L588true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 41#L132true assume 0 != main_~tmp~0; 82#L105true havoc test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_#t~nondet70, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 57#L173-1true [2021-07-06 20:25:00,117 INFO L793 eck$LassoCheckResult]: Loop: 57#L173-1true assume !false; 64#L795true assume test_~splverifierCounter~0 < 4; 88#L796true test_~tmp~8 := test_#t~nondet67;havoc test_#t~nondet67; 3#L804true assume !(0 != test_~tmp~8); 6#L804-1true test_~tmp___0~2 := test_#t~nondet68;havoc test_#t~nondet68; 72#L814true assume !(0 != test_~tmp___0~2); 76#L814-1true test_~tmp___2~0 := test_#t~nondet69;havoc test_#t~nondet69; 46#L824true assume 0 != test_~tmp___2~0; 14#L830-1true assume !(0 != ~pumpRunning~0); 86#L606true assume !(0 != ~systemActive~0); 94#L613true havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 56#L894-1true __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 78#L167true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 57#L173-1true [2021-07-06 20:25:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:25:00,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083307459] [2021-07-06 20:25:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,341 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,412 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:00,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1672602498, now seen corresponding path program 1 times [2021-07-06 20:25:00,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605490796] [2021-07-06 20:25:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,440 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,442 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:00,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash 41676440, now seen corresponding path program 1 times [2021-07-06 20:25:00,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792300172] [2021-07-06 20:25:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:00,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:25:00,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:00,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:00,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792300172] [2021-07-06 20:25:00,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792300172] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:00,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:00,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:25:00,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357459042] [2021-07-06 20:25:00,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:25:00,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:25:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:25:00,580 INFO L87 Difference]: Start difference. First operand has 92 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 91 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:00,736 INFO L93 Difference]: Finished difference Result 234 states and 327 transitions. [2021-07-06 20:25:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:25:00,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 234 states and 327 transitions. [2021-07-06 20:25:00,741 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 149 [2021-07-06 20:25:00,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 234 states to 213 states and 306 transitions. [2021-07-06 20:25:00,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 213 [2021-07-06 20:25:00,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-07-06 20:25:00,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 213 states and 306 transitions. [2021-07-06 20:25:00,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:00,750 INFO L681 BuchiCegarLoop]: Abstraction has 213 states and 306 transitions. [2021-07-06 20:25:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states and 306 transitions. [2021-07-06 20:25:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 132. [2021-07-06 20:25:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 131 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 189 transitions. [2021-07-06 20:25:00,773 INFO L704 BuchiCegarLoop]: Abstraction has 132 states and 189 transitions. [2021-07-06 20:25:00,773 INFO L587 BuchiCegarLoop]: Abstraction has 132 states and 189 transitions. [2021-07-06 20:25:00,773 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:25:00,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 132 states and 189 transitions. [2021-07-06 20:25:00,775 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 92 [2021-07-06 20:25:00,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:00,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:00,775 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,776 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,776 INFO L791 eck$LassoCheckResult]: Stem: 388#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 360#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 361#L580 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 354#L588 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 355#L132 assume 0 != main_~tmp~0; 395#L105 havoc test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_#t~nondet70, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 402#L173-1 [2021-07-06 20:25:00,776 INFO L793 eck$LassoCheckResult]: Loop: 402#L173-1 assume !false; 417#L795 assume test_~splverifierCounter~0 < 4; 423#L796 test_~tmp~8 := test_#t~nondet67;havoc test_#t~nondet67; 344#L804 assume !(0 != test_~tmp~8); 346#L804-1 test_~tmp___0~2 := test_#t~nondet68;havoc test_#t~nondet68; 351#L814 assume !(0 != test_~tmp___0~2); 370#L814-1 test_~tmp___2~0 := test_#t~nondet69;havoc test_#t~nondet69; 401#L824 assume 0 != test_~tmp___2~0; 364#L830-1 assume !(0 != ~pumpRunning~0); 366#L606 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 407#L638 assume !(0 == ~pumpRunning~0); 409#L613 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 415#L894-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 416#L167 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 402#L173-1 [2021-07-06 20:25:00,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,777 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:25:00,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367083103] [2021-07-06 20:25:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,801 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,822 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,830 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -352838738, now seen corresponding path program 1 times [2021-07-06 20:25:00,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121873301] [2021-07-06 20:25:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:00,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:00,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121873301] [2021-07-06 20:25:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121873301] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:00,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:00,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:00,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310796689] [2021-07-06 20:25:00,842 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:00,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:25:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:25:00,843 INFO L87 Difference]: Start difference. First operand 132 states and 189 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:00,881 INFO L93 Difference]: Finished difference Result 177 states and 241 transitions. [2021-07-06 20:25:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:25:00,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 241 transitions. [2021-07-06 20:25:00,883 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-07-06 20:25:00,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 241 transitions. [2021-07-06 20:25:00,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2021-07-06 20:25:00,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2021-07-06 20:25:00,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 241 transitions. [2021-07-06 20:25:00,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:00,886 INFO L681 BuchiCegarLoop]: Abstraction has 177 states and 241 transitions. [2021-07-06 20:25:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 241 transitions. [2021-07-06 20:25:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-07-06 20:25:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.3615819209039548) internal successors, (241), 176 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 241 transitions. [2021-07-06 20:25:00,892 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 241 transitions. [2021-07-06 20:25:00,892 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 241 transitions. [2021-07-06 20:25:00,892 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:25:00,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 241 transitions. [2021-07-06 20:25:00,893 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 126 [2021-07-06 20:25:00,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:00,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:00,894 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,894 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:00,894 INFO L791 eck$LassoCheckResult]: Stem: 704#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 675#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 676#L580 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 669#L588 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 670#L132 assume 0 != main_~tmp~0; 711#L105 havoc test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_#t~nondet70, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 753#L173-1 [2021-07-06 20:25:00,894 INFO L793 eck$LassoCheckResult]: Loop: 753#L173-1 assume !false; 810#L795 assume test_~splverifierCounter~0 < 4; 809#L796 test_~tmp~8 := test_#t~nondet67;havoc test_#t~nondet67; 808#L804 assume !(0 != test_~tmp~8); 806#L804-1 test_~tmp___0~2 := test_#t~nondet68;havoc test_#t~nondet68; 805#L814 assume !(0 != test_~tmp___0~2); 803#L814-1 test_~tmp___2~0 := test_#t~nondet69;havoc test_#t~nondet69; 719#L824 assume 0 != test_~tmp___2~0; 679#L830-1 assume !(0 != ~pumpRunning~0); 680#L606 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 727#L638 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 728#L934 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 671#L939 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 672#L758 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 699#L758-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 681#L764 processEnvironment_#t~ret47 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret47;havoc processEnvironment_#t~ret47; 682#L642 assume !(0 != processEnvironment_~tmp~5); 746#L613 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 817#L894-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 812#L167 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 753#L173-1 [2021-07-06 20:25:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,895 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:25:00,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728209919] [2021-07-06 20:25:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,923 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,940 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash -539212902, now seen corresponding path program 1 times [2021-07-06 20:25:00,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847359862] [2021-07-06 20:25:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,952 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:00,954 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:00,956 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash -524500928, now seen corresponding path program 1 times [2021-07-06 20:25:00,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:00,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576184600] [2021-07-06 20:25:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:00,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:00,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:00,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:00,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:00,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576184600] [2021-07-06 20:25:00,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576184600] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:00,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:00,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:00,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890698052] [2021-07-06 20:25:01,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:01,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-07-06 20:25:01,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:01,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:25:01,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:25:01,106 INFO L87 Difference]: Start difference. First operand 177 states and 241 transitions. cyclomatic complexity: 67 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:01,192 INFO L93 Difference]: Finished difference Result 584 states and 797 transitions. [2021-07-06 20:25:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:25:01,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 584 states and 797 transitions. [2021-07-06 20:25:01,195 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 437 [2021-07-06 20:25:01,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 584 states to 584 states and 797 transitions. [2021-07-06 20:25:01,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 584 [2021-07-06 20:25:01,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 584 [2021-07-06 20:25:01,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 584 states and 797 transitions. [2021-07-06 20:25:01,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:01,201 INFO L681 BuchiCegarLoop]: Abstraction has 584 states and 797 transitions. [2021-07-06 20:25:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states and 797 transitions. [2021-07-06 20:25:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 348. [2021-07-06 20:25:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 348 states have (on average 1.3333333333333333) internal successors, (464), 347 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 464 transitions. [2021-07-06 20:25:01,211 INFO L704 BuchiCegarLoop]: Abstraction has 348 states and 464 transitions. [2021-07-06 20:25:01,211 INFO L587 BuchiCegarLoop]: Abstraction has 348 states and 464 transitions. [2021-07-06 20:25:01,211 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:25:01,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 348 states and 464 transitions. [2021-07-06 20:25:01,213 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 252 [2021-07-06 20:25:01,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:01,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:01,214 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:01,214 INFO L843 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] [2021-07-06 20:25:01,214 INFO L791 eck$LassoCheckResult]: Stem: 1483#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1454#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1455#L580 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1448#L588 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1449#L132 assume 0 != main_~tmp~0; 1490#L105 havoc test_#t~nondet67, test_#t~nondet68, test_#t~nondet69, test_#t~nondet70, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1541#L173-1 [2021-07-06 20:25:01,214 INFO L793 eck$LassoCheckResult]: Loop: 1541#L173-1 assume !false; 1689#L795 assume test_~splverifierCounter~0 < 4; 1547#L796 test_~tmp~8 := test_#t~nondet67;havoc test_#t~nondet67; 1438#L804 assume !(0 != test_~tmp~8); 1440#L804-1 test_~tmp___0~2 := test_#t~nondet68;havoc test_#t~nondet68; 1445#L814 assume !(0 != test_~tmp___0~2); 1531#L814-1 test_~tmp___2~0 := test_#t~nondet69;havoc test_#t~nondet69; 1498#L824 assume 0 != test_~tmp___2~0; 1458#L830-1 assume !(0 != ~pumpRunning~0); 1459#L606 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1545#L638 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1733#L934 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1693#L939 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 1690#L758 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1687#L758-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1684#L764 processEnvironment_#t~ret47 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret47;havoc processEnvironment_#t~ret47; 1536#L642 assume !(0 != processEnvironment_~tmp~5); 1534#L613 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1511#L894-1 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1512#L167 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1537#L926 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 1697#L173 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1541#L173-1 [2021-07-06 20:25:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:01,215 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-07-06 20:25:01,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:01,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561285614] [2021-07-06 20:25:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:01,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,229 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,244 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1507450700, now seen corresponding path program 1 times [2021-07-06 20:25:01,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:01,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280802182] [2021-07-06 20:25:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:01,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,262 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,264 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:01,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:01,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1534211470, now seen corresponding path program 1 times [2021-07-06 20:25:01,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:01,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215438238] [2021-07-06 20:25:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:01,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,282 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:01,297 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:01,304 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:01,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:01,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-06 20:25:44,377 WARN L205 SmtUtils]: Spent 42.93 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:25:44,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:44,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:26:07,255 WARN L205 SmtUtils]: Spent 22.82 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:26:07,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:26:07 BoogieIcfgContainer [2021-07-06 20:26:07,400 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:26:07,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:26:07,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:26:07,401 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:26:07,401 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:00" (3/4) ... [2021-07-06 20:26:07,403 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:26:07,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:26:07,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:26:07,467 INFO L168 Benchmark]: Toolchain (without parser) took 68545.86 ms. Allocated memory was 65.0 MB in the beginning and 134.2 MB in the end (delta: 69.2 MB). Free memory was 46.3 MB in the beginning and 71.4 MB in the end (delta: -25.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,467 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:26:07,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.86 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 46.1 MB in the beginning and 64.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 61.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,468 INFO L168 Benchmark]: Boogie Preprocessor took 42.71 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 59.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,468 INFO L168 Benchmark]: RCFGBuilder took 632.08 ms. Allocated memory is still 92.3 MB. Free memory was 59.1 MB in the beginning and 60.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,468 INFO L168 Benchmark]: BuchiAutomizer took 67380.85 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 60.7 MB in the beginning and 73.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,469 INFO L168 Benchmark]: Witness Printer took 65.99 ms. Allocated memory is still 134.2 MB. Free memory was 73.5 MB in the beginning and 71.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:07,470 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 65.0 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.86 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 46.1 MB in the beginning and 64.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.15 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 61.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.71 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 59.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 632.08 ms. Allocated memory is still 92.3 MB. Free memory was 59.1 MB in the beginning and 60.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 67380.85 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 60.7 MB in the beginning and 73.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. * Witness Printer took 65.99 ms. Allocated memory is still 134.2 MB. Free memory was 73.5 MB in the beginning and 71.4 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 348 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 67.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 66.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 30.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 317 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 348 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 416 SDtfs, 1042 SDslu, 1211 SDs, 0 SdLazy, 143 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 794]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17771} State at position 1 is {NULL=0, NULL=17783, NULL=0, retValue_acc=1, NULL=17771, NULL=0, NULL=0, methaneLevelCritical=0, NULL=17774, NULL=17793, retValue_acc=0, tmp___1=0, tmp=0, NULL=17790, NULL=0, NULL=17794, tmp=0, cleanupTimeShifts=4, NULL=17792, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c23ceff=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=17784, NULL=17775, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73662e1e=0, NULL=0, \result=1, NULL=0, NULL=17778, NULL=0, NULL=0, NULL=0, tmp=1, tmp___0=0, NULL=17789, NULL=17780, NULL=17799, head=0, tmp=0, NULL=17786, NULL=0, NULL=0, NULL=17772, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21fafc74=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b662814=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3267ea1c=0, NULL=0, NULL=17781, NULL=17796, NULL=0, NULL=17779, NULL=0, tmp___0=0, NULL=0, NULL=17782, NULL=17795, NULL=0, tmp___0=1, NULL=17788, NULL=17787, NULL=17773, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=17776, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5efa4bbf=55, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46c9b80b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7beee2dc=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6baa5c89=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@df745e6=0, NULL=17777, tmp___2=55, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=17800, tmp___1=0, NULL=17797, NULL=17791, NULL=17798} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 Loop: [L794] COND TRUE 1 [L796] COND TRUE splverifierCounter < 4 [L802] tmp = __VERIFIER_nondet_int() [L804] COND FALSE !(\read(tmp)) [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND TRUE \read(tmp___2) [L606] COND FALSE !(\read(pumpRunning)) [L613] COND TRUE \read(systemActive) [L635] int tmp ; [L638] COND TRUE ! pumpRunning [L750] int retValue_acc ; [L751] int tmp ; [L752] int tmp___0 ; [L931] int retValue_acc ; [L934] COND TRUE waterLevel < 2 [L935] retValue_acc = 1 [L936] return (retValue_acc); [L756] tmp = isHighWaterSensorDry() [L758] COND TRUE \read(tmp) [L759] tmp___0 = 0 [L763] retValue_acc = tmp___0 [L764] return (retValue_acc); [L640] tmp = isHighWaterLevel() [L642] COND FALSE !(\read(tmp)) [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L171] tmp___0 = getWaterLevel() [L173] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:26:07,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...