./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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_spec1_product34.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 2195b79e9318debfd37e6b0067135f78488fab28 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-20ed64e [2021-08-27 15:55:51,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:55:51,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:55:51,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:55:51,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:55:51,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:55:51,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:55:51,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:55:51,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:55:51,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:55:51,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:55:51,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:55:51,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:55:51,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:55:51,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:55:51,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:55:51,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:55:51,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:55:51,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:55:51,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:55:51,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:55:51,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:55:51,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:55:51,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:55:51,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:55:51,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:55:51,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:55:51,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:55:51,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:55:51,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:55:51,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:55:51,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:55:51,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:55:51,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:55:51,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:55:51,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:55:51,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:55:51,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:55:51,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:55:51,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:55:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:55:51,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:55:51,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:55:51,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:55:51,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:55:51,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:55:51,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:55:51,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:55:51,159 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:55:51,159 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:55:51,159 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:55:51,159 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:55:51,160 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:55:51,160 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:55:51,160 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:55:51,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:55:51,161 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:55:51,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:55:51,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:55:51,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:55:51,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:55:51,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:55:51,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:55:51,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:55:51,162 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:55:51,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:55:51,163 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:55:51,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:55:51,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:55:51,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:55:51,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:55:51,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:55:51,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:55:51,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:55:51,165 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:55:51,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2195b79e9318debfd37e6b0067135f78488fab28 [2021-08-27 15:55:51,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:55:51,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:55:51,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:55:51,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:55:51,439 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:55:51,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-08-27 15:55:51,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8591ff77/dcebcd81d10b4ac3b66a55cb5204272b/FLAG6a035e010 [2021-08-27 15:55:51,995 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:55:51,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-08-27 15:55:52,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8591ff77/dcebcd81d10b4ac3b66a55cb5204272b/FLAG6a035e010 [2021-08-27 15:55:52,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8591ff77/dcebcd81d10b4ac3b66a55cb5204272b [2021-08-27 15:55:52,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:55:52,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:55:52,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:55:52,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:55:52,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:55:52,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2881667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52, skipping insertion in model container [2021-08-27 15:55:52,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:55:52,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:55:52,713 WARN L228 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_spec1_product34.cil.c[12260,12273] [2021-08-27 15:55:52,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:55:52,802 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:55:52,862 WARN L228 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_spec1_product34.cil.c[12260,12273] [2021-08-27 15:55:52,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:55:52,916 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:55:52,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52 WrapperNode [2021-08-27 15:55:52,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:55:52,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:55:52,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:55:52,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:55:52,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:55:52,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:55:52,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:55:52,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:55:52,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:52,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:55:52,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:55:52,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:55:52,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:55:52,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (1/1) ... [2021-08-27 15:55:53,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:55:53,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:55:53,042 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) [2021-08-27 15:55:53,045 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 [2021-08-27 15:55:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:55:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:55:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:55:53,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:55:53,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:55:53,807 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-08-27 15:55:53,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:55:53 BoogieIcfgContainer [2021-08-27 15:55:53,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:55:53,811 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:55:53,811 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:55:53,814 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:55:53,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:55:53,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:55:52" (1/3) ... [2021-08-27 15:55:53,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@516c7b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:55:53, skipping insertion in model container [2021-08-27 15:55:53,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:55:53,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:55:52" (2/3) ... [2021-08-27 15:55:53,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@516c7b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:55:53, skipping insertion in model container [2021-08-27 15:55:53,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:55:53,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:55:53" (3/3) ... [2021-08-27 15:55:53,817 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2021-08-27 15:55:53,861 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:55:53,861 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:55:53,861 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:55:53,861 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:55:53,862 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:55:53,862 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:55:53,862 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:55:53,862 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:55:53,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 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) [2021-08-27 15:55:53,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 15:55:53,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:55:53,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:55:53,907 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:55:53,907 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:55:53,907 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:55:53,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 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) [2021-08-27 15:55:53,912 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 15:55:53,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:55:53,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:55:53,912 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:55:53,913 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:55:53,921 INFO L791 eck$LassoCheckResult]: Stem: 60#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 41#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; 20#L900true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 6#L908true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 65#L132true assume 0 != main_~tmp~0; 18#L105true havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 34#L860-1true [2021-08-27 15:55:53,921 INFO L793 eck$LassoCheckResult]: Loop: 34#L860-1true assume !false; 26#L632true assume test_~splverifierCounter~0 < 4; 66#L633true test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 46#L641true assume !(0 != test_~tmp~4); 15#L641-1true test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 55#L651true assume !(0 != test_~tmp___0~0); 4#L651-1true test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 47#L661true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 56#L669-2true assume !(0 != ~pumpRunning~0); 50#L699true assume !(0 != ~systemActive~0); 51#L706true havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 33#L569true __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 42#L860true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 34#L860-1true [2021-08-27 15:55:53,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:53,925 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:55:53,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:53,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723380032] [2021-08-27 15:55:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:53,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,155 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:55:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,306 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:55:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1680575549, now seen corresponding path program 1 times [2021-08-27 15:55:54,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020618411] [2021-08-27 15:55:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:55:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:55:54,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:55:54,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020618411] [2021-08-27 15:55:54,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020618411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:55:54,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:55:54,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:55:54,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447215981] [2021-08-27 15:55:54,367 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:55:54,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:55:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:55:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:55:54,379 INFO L87 Difference]: Start difference. First operand has 75 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-08-27 15:55:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:55:54,406 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2021-08-27 15:55:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:55:54,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 104 transitions. [2021-08-27 15:55:54,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 15:55:54,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 68 states and 96 transitions. [2021-08-27 15:55:54,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-08-27 15:55:54,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-08-27 15:55:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 96 transitions. [2021-08-27 15:55:54,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:55:54,416 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 96 transitions. [2021-08-27 15:55:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 96 transitions. [2021-08-27 15:55:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 15:55:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.411764705882353) internal successors, (96), 67 states have internal predecessors, (96), 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) [2021-08-27 15:55:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2021-08-27 15:55:54,437 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 96 transitions. [2021-08-27 15:55:54,438 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 96 transitions. [2021-08-27 15:55:54,438 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:55:54,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 96 transitions. [2021-08-27 15:55:54,439 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 15:55:54,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:55:54,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:55:54,440 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:55:54,440 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:55:54,440 INFO L791 eck$LassoCheckResult]: Stem: 224#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 211#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; 188#L900 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 164#L908 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 165#L132 assume 0 != main_~tmp~0; 186#L105 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 187#L860-1 [2021-08-27 15:55:54,441 INFO L793 eck$LassoCheckResult]: Loop: 187#L860-1 assume !false; 195#L632 assume test_~splverifierCounter~0 < 4; 196#L633 test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 215#L641 assume !(0 != test_~tmp~4); 183#L641-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 184#L651 assume !(0 != test_~tmp___0~0); 162#L651-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 163#L661 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 216#L669-2 assume !(0 != ~pumpRunning~0); 218#L699 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 198#L731 assume !(0 == ~pumpRunning~0); 199#L706 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 203#L569 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 204#L860 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 187#L860-1 [2021-08-27 15:55:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:55:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430105384] [2021-08-27 15:55:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,475 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:55:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:55:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash -589844997, now seen corresponding path program 1 times [2021-08-27 15:55:54,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656197111] [2021-08-27 15:55:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:55:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:55:54,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:55:54,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656197111] [2021-08-27 15:55:54,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656197111] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:55:54,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:55:54,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:55:54,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847126886] [2021-08-27 15:55:54,545 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:55:54,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:55:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:55:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:55:54,547 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. cyclomatic complexity: 30 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) [2021-08-27 15:55:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:55:54,620 INFO L93 Difference]: Finished difference Result 109 states and 147 transitions. [2021-08-27 15:55:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:55:54,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 147 transitions. [2021-08-27 15:55:54,624 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 76 [2021-08-27 15:55:54,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 109 states and 147 transitions. [2021-08-27 15:55:54,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 109 [2021-08-27 15:55:54,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 109 [2021-08-27 15:55:54,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 147 transitions. [2021-08-27 15:55:54,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:55:54,628 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 147 transitions. [2021-08-27 15:55:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 147 transitions. [2021-08-27 15:55:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-08-27 15:55:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.348623853211009) internal successors, (147), 108 states have internal predecessors, (147), 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) [2021-08-27 15:55:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2021-08-27 15:55:54,641 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 147 transitions. [2021-08-27 15:55:54,642 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 147 transitions. [2021-08-27 15:55:54,642 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:55:54,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 147 transitions. [2021-08-27 15:55:54,645 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 76 [2021-08-27 15:55:54,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:55:54,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:55:54,646 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:55:54,646 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] [2021-08-27 15:55:54,646 INFO L791 eck$LassoCheckResult]: Stem: 410#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);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~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);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~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 397#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; 372#L900 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 346#L908 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 347#L132 assume 0 != main_~tmp~0; 367#L105 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 368#L860-1 [2021-08-27 15:55:54,646 INFO L793 eck$LassoCheckResult]: Loop: 368#L860-1 assume !false; 425#L632 assume test_~splverifierCounter~0 < 4; 417#L633 test_~tmp~4 := test_#t~nondet53;havoc test_#t~nondet53; 401#L641 assume !(0 != test_~tmp~4); 364#L641-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 365#L651 assume !(0 != test_~tmp___0~0); 344#L651-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 345#L661 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 402#L669-2 assume !(0 != ~pumpRunning~0); 404#L699 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 381#L731 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 362#L609 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 363#L614 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 391#L833 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 407#L833-2 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 383#L839 processEnvironment_#t~ret57 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret57;havoc processEnvironment_#t~ret57; 384#L735 assume !(0 != processEnvironment_~tmp~5); 416#L706 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 431#L569 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 427#L860 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 368#L860-1 [2021-08-27 15:55:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,647 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:55:54,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023206294] [2021-08-27 15:55:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,701 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:55:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:55:54,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1033973017, now seen corresponding path program 1 times [2021-08-27 15:55:54,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319619356] [2021-08-27 15:55:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,775 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:55:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:55:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:55:54,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1019261043, now seen corresponding path program 1 times [2021-08-27 15:55:54,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:55:54,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828757869] [2021-08-27 15:55:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:55:54,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:55:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,834 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:55:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:55:54,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:56:36,877 WARN L207 SmtUtils]: Spent 41.72 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:57:19,532 WARN L207 SmtUtils]: Spent 20.14 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:57:19,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:57:19 BoogieIcfgContainer [2021-08-27 15:57:19,670 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:57:19,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:57:19,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:57:19,670 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:57:19,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:55:53" (3/4) ... [2021-08-27 15:57:19,673 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:57:19,717 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:57:19,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:57:19,718 INFO L168 Benchmark]: Toolchain (without parser) took 87223.80 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 23.2 MB in the beginning and 20.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,718 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:57:19,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.82 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 37.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,719 INFO L168 Benchmark]: Boogie Preprocessor took 25.90 ms. Allocated memory is still 58.7 MB. Free memory was 34.1 MB in the beginning and 32.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,719 INFO L168 Benchmark]: RCFGBuilder took 818.14 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 35.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,720 INFO L168 Benchmark]: BuchiAutomizer took 85858.55 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 35.8 MB in the beginning and 23.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,720 INFO L168 Benchmark]: Witness Printer took 46.79 ms. Allocated memory is still 104.9 MB. Free memory was 23.9 MB in the beginning and 20.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:19,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.82 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 37.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.90 ms. Allocated memory is still 58.7 MB. Free memory was 34.1 MB in the beginning and 32.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 818.14 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 35.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85858.55 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 35.8 MB in the beginning and 23.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. * Witness Printer took 46.79 ms. Allocated memory is still 104.9 MB. Free memory was 23.9 MB in the beginning and 20.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 109 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 85.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 24.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 109 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 212 SDtfs, 178 SDslu, 48 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 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: 631]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11007} State at position 1 is {NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=11007, NULL=11031, NULL=0, NULL=0, NULL=0, NULL=11025, NULL=11016, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23ff6b77=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42692877=0, NULL=11032, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d79cc03=0, NULL=11026, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b472d37=0, tmp___0=0, retValue_acc=1, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=11029, tmp___1=0, NULL=11019, tmp___0=0, NULL=0, NULL=0, NULL=11020, NULL=11021, NULL=11033, cleanupTimeShifts=4, NULL=11018, NULL=11028, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, \result=0, retValue_acc=0, NULL=11012, tmp___0=0, NULL=0, NULL=0, NULL=11010, NULL=11022, \result=1, head=0, pumpRunning=0, tmp=1, \result=0, NULL=11030, retValue_acc=1, NULL=11009, tmp=0, NULL=0, NULL=11017, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a46f511=0, NULL=11013, \result=1, NULL=11014, NULL=0, NULL=0, NULL=11034, tmp___2=70, NULL=11011, NULL=11024, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=11035, NULL=11027, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@306b6b06=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5562218a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f92d44d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bfbd35e=70, head=0, NULL=0, NULL=0, tmp=0, NULL=11023, NULL=0, NULL=0, NULL=0, NULL=11015, NULL=11008, NULL=0} - 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; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 Loop: [L631] COND TRUE 1 [L633] COND TRUE splverifierCounter < 4 [L639] tmp = __VERIFIER_nondet_int() [L641] COND FALSE !(\read(tmp)) [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND FALSE !(\read(tmp___0)) [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L847] systemActive = 1 [L699] COND FALSE !(\read(pumpRunning)) [L706] COND TRUE \read(systemActive) [L728] int tmp ; [L731] COND TRUE ! pumpRunning [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L606] int retValue_acc ; [L609] COND TRUE waterLevel < 2 [L610] retValue_acc = 1 [L611] return (retValue_acc); [L831] tmp = isHighWaterSensorDry() [L833] COND TRUE \read(tmp) [L834] tmp___0 = 0 [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); [L733] tmp = isHighWaterLevel() [L735] COND FALSE !(\read(tmp)) [L853] int tmp ; [L854] int tmp___0 ; [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:57:19,770 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...