./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product50.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_spec1_product50.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 46490a57ce91137af910512252196515ce511def .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:14:11,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:14:11,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:14:11,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:14:11,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:14:11,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:14:11,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:14:11,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:14:11,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:14:11,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:14:11,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:14:11,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:14:11,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:14:11,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:14:11,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:14:11,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:14:11,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:14:11,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:14:11,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:14:11,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:14:11,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:14:11,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:14:11,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:14:11,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:14:11,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:14:11,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:14:11,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:14:11,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:14:11,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:14:11,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:14:11,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:14:11,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:14:11,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:14:11,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:14:11,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:14:11,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:14:11,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:14:11,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:14:11,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:14:11,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:14:11,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:14:11,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:14:11,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:14:11,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:14:11,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:14:11,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:14:11,554 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:14:11,554 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:14:11,554 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:14:11,554 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:14:11,554 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:14:11,555 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:14:11,555 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:14:11,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:14:11,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:14:11,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:14:11,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:14:11,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:14:11,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:14:11,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:14:11,559 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:14:11,559 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46490a57ce91137af910512252196515ce511def [2021-07-06 20:14:11,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:14:11,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:14:11,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:14:11,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:14:11,818 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:14:11,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-07-06 20:14:11,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c3e34ae/2ee6f411c4984a4581d8c7ebc4e6521a/FLAG5278716f5 [2021-07-06 20:14:12,268 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:14:12,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-07-06 20:14:12,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c3e34ae/2ee6f411c4984a4581d8c7ebc4e6521a/FLAG5278716f5 [2021-07-06 20:14:12,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c3e34ae/2ee6f411c4984a4581d8c7ebc4e6521a [2021-07-06 20:14:12,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:14:12,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:14:12,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:14:12,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:14:12,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:14:12,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:12,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3b996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12, skipping insertion in model container [2021-07-06 20:14:12,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:12,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:14:12,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:14:12,842 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_spec1_product50.cil.c[5930,5943] [2021-07-06 20:14:12,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:14:12,905 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:14:12,932 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_spec1_product50.cil.c[5930,5943] [2021-07-06 20:14:12,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:14:12,973 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:14:12,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12 WrapperNode [2021-07-06 20:14:12,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:14:12,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:14:12,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:14:12,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:14:12,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:12,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:14:13,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:14:13,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:14:13,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:14:13,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:14:13,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:14:13,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:14:13,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:14:13,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (1/1) ... [2021-07-06 20:14:13,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:14:13,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:14:13,122 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 20:14:13,153 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 20:14:13,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:14:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:14:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:14:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:14:13,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:14:13,726 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-07-06 20:14:13,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:14:13 BoogieIcfgContainer [2021-07-06 20:14:13,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:14:13,728 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:14:13,728 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:14:13,730 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:14:13,731 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:14:13,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:14:12" (1/3) ... [2021-07-06 20:14:13,731 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2539f8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:14:13, skipping insertion in model container [2021-07-06 20:14:13,732 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:14:13,732 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:14:12" (2/3) ... [2021-07-06 20:14:13,732 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2539f8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:14:13, skipping insertion in model container [2021-07-06 20:14:13,732 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:14:13,732 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:14:13" (3/3) ... [2021-07-06 20:14:13,733 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-07-06 20:14:13,758 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:14:13,759 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:14:13,759 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:14:13,759 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:14:13,759 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:14:13,759 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:14:13,759 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:14:13,759 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:14:13,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 113 states have internal predecessors, (174), 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 20:14:13,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:14:13,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:14:13,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:14:13,788 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:14:13,789 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:14:13,789 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:14:13,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 113 states have internal predecessors, (174), 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 20:14:13,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:14:13,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:14:13,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:14:13,794 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:14:13,794 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:14:13,797 INFO L791 eck$LassoCheckResult]: Stem: 76#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(13);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(80, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(117, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(109, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(112, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(110, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 3 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(32, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 9#L-1true havoc main_#res;havoc main_#t~ret19, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 105#L305true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 109#L313true main_#t~ret19 := valid_product_#res;main_~tmp~1 := main_#t~ret19;havoc main_#t~ret19; 113#L269true assume 0 != main_~tmp~1; 71#L242true havoc test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_#t~nondet24, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 31#L53-1true [2021-07-06 20:14:13,797 INFO L793 eck$LassoCheckResult]: Loop: 31#L53-1true assume !false; 96#L330true assume test_~splverifierCounter~0 < 4; 42#L331true test_~tmp~2 := test_#t~nondet21;havoc test_#t~nondet21; 44#L339true assume !(0 != test_~tmp~2); 45#L339-1true test_~tmp___0~1 := test_#t~nondet22;havoc test_#t~nondet22; 101#L349true assume !(0 != test_~tmp___0~1); 104#L349-1true test_~tmp___2~0 := test_#t~nondet23;havoc test_#t~nondet23; 18#L359true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 26#L367-2true assume !(0 != ~pumpRunning~0); 98#L404true assume !(0 != ~systemActive~0); 36#L411true havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 84#L121true __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 43#L53true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 31#L53-1true [2021-07-06 20:14:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:14:13,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:13,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064585259] [2021-07-06 20:14:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:13,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:13,957 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,020 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,051 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:14:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1678820861, now seen corresponding path program 1 times [2021-07-06 20:14:14,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193720049] [2021-07-06 20:14:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:14:14,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:14:14,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:14:14,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:14:14,110 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 20:14:14,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:14:14,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193720049] [2021-07-06 20:14:14,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193720049] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:14:14,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:14:14,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:14:14,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431017726] [2021-07-06 20:14:14,121 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:14:14,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:14:14,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:14:14,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:14:14,135 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 113 states have internal predecessors, (174), 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) [2021-07-06 20:14:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:14:14,174 INFO L93 Difference]: Finished difference Result 114 states and 164 transitions. [2021-07-06 20:14:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:14:14,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 164 transitions. [2021-07-06 20:14:14,183 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:14:14,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 107 states and 156 transitions. [2021-07-06 20:14:14,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-07-06 20:14:14,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-07-06 20:14:14,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 156 transitions. [2021-07-06 20:14:14,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:14:14,190 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-07-06 20:14:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 156 transitions. [2021-07-06 20:14:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-07-06 20:14:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 107 states have (on average 1.4579439252336448) internal successors, (156), 106 states have internal predecessors, (156), 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 20:14:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2021-07-06 20:14:14,219 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-07-06 20:14:14,219 INFO L587 BuchiCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-07-06 20:14:14,219 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:14:14,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 107 states and 156 transitions. [2021-07-06 20:14:14,222 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:14:14,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:14:14,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:14:14,222 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:14:14,222 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:14:14,223 INFO L791 eck$LassoCheckResult]: Stem: 332#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(13);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(80, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(117, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(109, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(112, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(110, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 3 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(32, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 249#L-1 havoc main_#res;havoc main_#t~ret19, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 250#L305 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 342#L313 main_#t~ret19 := valid_product_#res;main_~tmp~1 := main_#t~ret19;havoc main_#t~ret19; 343#L269 assume 0 != main_~tmp~1; 329#L242 havoc test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_#t~nondet24, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 282#L53-1 [2021-07-06 20:14:14,223 INFO L793 eck$LassoCheckResult]: Loop: 282#L53-1 assume !false; 283#L330 assume test_~splverifierCounter~0 < 4; 293#L331 test_~tmp~2 := test_#t~nondet21;havoc test_#t~nondet21; 294#L339 assume !(0 != test_~tmp~2); 298#L339-1 test_~tmp___0~1 := test_#t~nondet22;havoc test_#t~nondet22; 299#L349 assume !(0 != test_~tmp___0~1); 301#L349-1 test_~tmp___2~0 := test_#t~nondet23;havoc test_#t~nondet23; 264#L359 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 265#L367-2 assume !(0 != ~pumpRunning~0); 248#L404 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 337#L462 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret25, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 258#L436-1 assume !(0 == ~pumpRunning~0); 256#L411 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 288#L121 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 295#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 282#L53-1 [2021-07-06 20:14:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,223 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:14:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653185820] [2021-07-06 20:14:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,265 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,289 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:14:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1079829887, now seen corresponding path program 1 times [2021-07-06 20:14:14,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640709027] [2021-07-06 20:14:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:14:14,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:14:14,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:14:14,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:14:14,321 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 20:14:14,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:14:14,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640709027] [2021-07-06 20:14:14,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640709027] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:14:14,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:14:14,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:14:14,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297960082] [2021-07-06 20:14:14,323 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:14:14,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:14:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:14:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:14:14,325 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. cyclomatic complexity: 51 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 20:14:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:14:14,426 INFO L93 Difference]: Finished difference Result 148 states and 204 transitions. [2021-07-06 20:14:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:14:14,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 204 transitions. [2021-07-06 20:14:14,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 102 [2021-07-06 20:14:14,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 148 states and 204 transitions. [2021-07-06 20:14:14,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 148 [2021-07-06 20:14:14,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 148 [2021-07-06 20:14:14,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 204 transitions. [2021-07-06 20:14:14,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:14:14,430 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 204 transitions. [2021-07-06 20:14:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 204 transitions. [2021-07-06 20:14:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-07-06 20:14:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 148 states have (on average 1.3783783783783783) internal successors, (204), 147 states have internal predecessors, (204), 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 20:14:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2021-07-06 20:14:14,435 INFO L704 BuchiCegarLoop]: Abstraction has 148 states and 204 transitions. [2021-07-06 20:14:14,435 INFO L587 BuchiCegarLoop]: Abstraction has 148 states and 204 transitions. [2021-07-06 20:14:14,435 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:14:14,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 148 states and 204 transitions. [2021-07-06 20:14:14,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 102 [2021-07-06 20:14:14,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:14:14,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:14:14,437 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:14:14,437 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] [2021-07-06 20:14:14,437 INFO L791 eck$LassoCheckResult]: Stem: 599#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(13);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(80, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(117, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(109, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(112, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(110, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(102, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 3 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(32, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 510#L-1 havoc main_#res;havoc main_#t~ret19, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 511#L305 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 611#L313 main_#t~ret19 := valid_product_#res;main_~tmp~1 := main_#t~ret19;havoc main_#t~ret19; 613#L269 assume 0 != main_~tmp~1; 595#L242 havoc test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_#t~nondet24, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 596#L53-1 [2021-07-06 20:14:14,437 INFO L793 eck$LassoCheckResult]: Loop: 596#L53-1 assume !false; 608#L330 assume test_~splverifierCounter~0 < 4; 559#L331 test_~tmp~2 := test_#t~nondet21;havoc test_#t~nondet21; 560#L339 assume !(0 != test_~tmp~2); 564#L339-1 test_~tmp___0~1 := test_#t~nondet22;havoc test_#t~nondet22; 565#L349 assume !(0 != test_~tmp___0~1); 567#L349-1 test_~tmp___2~0 := test_#t~nondet23;havoc test_#t~nondet23; 526#L359 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 527#L367-2 assume !(0 != ~pumpRunning~0); 539#L404 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 604#L462 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret25, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 520#L436-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret44, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 521#L161-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 522#L166-1 isHighWaterLevel_#t~ret44 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret44;havoc isHighWaterLevel_#t~ret44; 536#L564-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~2 := 0; 600#L564-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 568#L570-1 processEnvironment__wrappee__highWaterSensor_#t~ret25 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret25;havoc processEnvironment__wrappee__highWaterSensor_#t~ret25; 569#L440-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 550#L411 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 634#L121 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 632#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 596#L53-1 [2021-07-06 20:14:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,438 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:14:14,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823251991] [2021-07-06 20:14:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,463 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,512 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:14:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash -246413043, now seen corresponding path program 1 times [2021-07-06 20:14:14,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411271073] [2021-07-06 20:14:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,531 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,534 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,536 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:14:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:14:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash 209658151, now seen corresponding path program 1 times [2021-07-06 20:14:14,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:14:14,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70898507] [2021-07-06 20:14:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:14:14,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:14:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,556 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:14:14,574 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:14:14,582 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:14:14,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:14,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-07-06 20:14:53,966 WARN L205 SmtUtils]: Spent 39.24 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:14:54,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:54,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:15:14,055 WARN L205 SmtUtils]: Spent 20.02 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:15:14,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:15:14 BoogieIcfgContainer [2021-07-06 20:15:14,251 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:15:14,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:15:14,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:15:14,264 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:15:14,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:14:13" (3/4) ... [2021-07-06 20:15:14,266 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:15:14,323 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:15:14,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:15:14,324 INFO L168 Benchmark]: Toolchain (without parser) took 61667.09 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 41.3 MB in the beginning and 31.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,325 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:15:14,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 31.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.80 ms. Allocated memory is still 58.7 MB. Free memory was 31.6 MB in the beginning and 28.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,326 INFO L168 Benchmark]: Boogie Preprocessor took 59.28 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 39.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,328 INFO L168 Benchmark]: RCFGBuilder took 633.08 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.3 MB in the beginning and 38.9 MB in the end (delta: 362.5 kB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,328 INFO L168 Benchmark]: BuchiAutomizer took 60523.32 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.9 MB in the beginning and 33.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,329 INFO L168 Benchmark]: Witness Printer took 71.39 ms. Allocated memory is still 86.0 MB. Free memory was 33.6 MB in the beginning and 31.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:15:14,331 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 46.1 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 31.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.80 ms. Allocated memory is still 58.7 MB. Free memory was 31.6 MB in the beginning and 28.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.28 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 39.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 633.08 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.3 MB in the beginning and 38.9 MB in the end (delta: 362.5 kB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 60523.32 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.9 MB in the beginning and 33.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. * Witness Printer took 71.39 ms. Allocated memory is still 86.0 MB. Free memory was 33.6 MB in the beginning and 31.5 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 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 148 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 60.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 60.2s. 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 20.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 148 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 319 SDtfs, 264 SDslu, 66 SDs, 0 SdLazy, 33 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.8ms 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: 329]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6924} State at position 1 is {NULL=0, NULL=0, NULL=6935, NULL=6924, NULL=0, NULL=6943, NULL=6937, methaneLevelCritical=0, tmp=0, NULL=0, NULL=6949, retValue_acc=0, NULL=6933, NULL=0, tmp___1=0, NULL=6950, NULL=0, NULL=6934, cleanupTimeShifts=4, NULL=6930, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ca42677=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5516b766=0, waterLevel=1, NULL=0, \result=1, head=0, pumpRunning=0, NULL=6932, tmp=1, retValue_acc=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49a3b6cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@529dcd77=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36d1a715=0, tmp=0, \result=1, NULL=0, NULL=0, NULL=6944, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, tmp___0=0, NULL=6928, NULL=6927, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d53a94f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fede10c=0, head=0, tmp=0, NULL=0, NULL=0, NULL=0, NULL=6952, retValue_acc=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@531df785=0, NULL=0, NULL=6947, tmp___0=0, NULL=0, NULL=0, NULL=6926, NULL=6940, NULL=0, NULL=0, tmp___0=0, tmp=0, NULL=6941, NULL=0, NULL=0, systemActive=1, NULL=6942, NULL=0, NULL=6931, \result=0, NULL=0, NULL=6938, NULL=6951, \result=0, NULL=6945, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26fa0acc=0, NULL=0, NULL=0, NULL=6948, retValue_acc=1, NULL=6929, NULL=6939, tmp___2=76, splverifierCounter=0, NULL=0, \result=0, NULL=6946, NULL=6925, NULL=6936, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9f48f7d=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L260] int retValue_acc ; [L261] int tmp ; [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 Loop: [L329] COND TRUE 1 [L331] COND TRUE splverifierCounter < 4 [L337] tmp = __VERIFIER_nondet_int() [L339] COND FALSE !(\read(tmp)) [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND FALSE !(\read(tmp___0)) [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L597] systemActive = 1 [L404] COND FALSE !(\read(pumpRunning)) [L411] COND TRUE \read(systemActive) [L459] int tmp ; [L462] COND FALSE !(\read(pumpRunning)) [L433] int tmp ; [L436] COND TRUE ! pumpRunning [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L158] int retValue_acc ; [L161] COND TRUE waterLevel < 2 [L162] retValue_acc = 1 [L163] return (retValue_acc); [L562] tmp = isHighWaterSensorDry() [L564] COND TRUE \read(tmp) [L565] tmp___0 = 0 [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); [L438] tmp = isHighWaterLevel() [L440] COND FALSE !(\read(tmp)) [L46] int tmp ; [L47] int tmp___0 ; [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:15:14,401 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...