./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product64.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_product64.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 5ca298a7f7a6dfe339e53e4b85ae8a0388f112d3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:59:24,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:59:24,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:59:24,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:59:24,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:59:24,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:59:24,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:59:24,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:59:24,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:59:24,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:59:24,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:59:24,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:59:24,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:59:24,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:59:24,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:59:24,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:59:24,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:59:24,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:59:24,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:59:24,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:59:24,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:59:24,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:59:24,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:59:24,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:59:24,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:59:24,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:59:24,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:59:24,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:59:24,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:59:24,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:59:24,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:59:24,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:59:24,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:59:24,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:59:24,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:59:24,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:59:24,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:59:24,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:59:24,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:59:24,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:59:24,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:59:24,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:59:24,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:59:24,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:59:24,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:59:24,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:59:24,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:59:24,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:59:24,408 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:59:24,408 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:59:24,408 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:59:24,408 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:59:24,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:59:24,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:59:24,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:59:24,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:59:24,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:59:24,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:59:24,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:59:24,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:59:24,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:59:24,417 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:59:24,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ca298a7f7a6dfe339e53e4b85ae8a0388f112d3 [2021-08-27 15:59:24,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:59:24,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:59:24,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:59:24,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:59:24,661 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:59:24,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product64.cil.c [2021-08-27 15:59:24,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b8e6e7d/0764876ecc944f5bb5b66f4392d1657a/FLAG70c0cc198 [2021-08-27 15:59:25,098 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:59:25,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product64.cil.c [2021-08-27 15:59:25,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b8e6e7d/0764876ecc944f5bb5b66f4392d1657a/FLAG70c0cc198 [2021-08-27 15:59:25,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60b8e6e7d/0764876ecc944f5bb5b66f4392d1657a [2021-08-27 15:59:25,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:59:25,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:59:25,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:59:25,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:59:25,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:59:25,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0418b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25, skipping insertion in model container [2021-08-27 15:59:25,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:59:25,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:59:25,293 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_product64.cil.c[1281,1294] [2021-08-27 15:59:25,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:59:25,416 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:59:25,424 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_product64.cil.c[1281,1294] [2021-08-27 15:59:25,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:59:25,487 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:59:25,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25 WrapperNode [2021-08-27 15:59:25,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:59:25,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:59:25,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:59:25,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:59:25,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:59:25,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:59:25,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:59:25,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:59:25,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:59:25,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:59:25,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:59:25,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:59:25,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (1/1) ... [2021-08-27 15:59:25,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:59:25,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:59:25,623 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 15:59:25,625 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 15:59:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:59:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:59:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:59:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:59:26,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:59:26,469 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-08-27 15:59:26,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:26 BoogieIcfgContainer [2021-08-27 15:59:26,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:59:26,472 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:59:26,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:59:26,474 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:59:26,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:26,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:59:25" (1/3) ... [2021-08-27 15:59:26,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3683b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:59:26, skipping insertion in model container [2021-08-27 15:59:26,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:26,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:25" (2/3) ... [2021-08-27 15:59:26,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3683b13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:59:26, skipping insertion in model container [2021-08-27 15:59:26,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:59:26,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:26" (3/3) ... [2021-08-27 15:59:26,476 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product64.cil.c [2021-08-27 15:59:26,507 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:59:26,507 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:59:26,507 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:59:26,507 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:59:26,507 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:59:26,508 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:59:26,508 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:59:26,508 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:59:26,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:26,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 15:59:26,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:26,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:26,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:26,564 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:26,564 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:59:26,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:26,577 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 15:59:26,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:26,577 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:26,579 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:26,579 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:26,586 INFO L791 eck$LassoCheckResult]: Stem: 212#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(13);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string58.base, #t~string58.offset, 1);call write~init~int(80, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(117, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(109, #t~string58.base, 3 + #t~string58.offset, 1);call write~init~int(112, #t~string58.base, 4 + #t~string58.offset, 1);call write~init~int(58, #t~string58.base, 5 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 6 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(110, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 3 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string64.base, #t~string64.offset, 1);call write~init~int(32, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string66.base, #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 1 + #t~string66.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 151#L-1true havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 52#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 100#L84true main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 27#L570true assume 0 != main_~tmp~4; 24#L546true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~11, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~11;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 36#L99-1true [2021-08-27 15:59:26,587 INFO L793 eck$LassoCheckResult]: Loop: 36#L99-1true assume !false; 15#L970true assume test_~splverifierCounter~0 < 4; 173#L971true test_~tmp~11 := test_#t~nondet79;havoc test_#t~nondet79; 93#L979true assume !(0 != test_~tmp~11); 87#L979-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 143#L989true assume !(0 != test_~tmp___0~3); 4#L989-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 210#L999true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 68#L1007-1true assume !(0 != ~pumpRunning~0); 162#L599true assume !(0 != ~systemActive~0); 130#L606true havoc __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_#t~ret9, __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~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 90#L899-5true __utac_acc__Specification1_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret8;havoc __utac_acc__Specification1_spec__1_#t~ret8; 85#L99true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 36#L99-1true [2021-08-27 15:59:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:59:26,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:26,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435997022] [2021-08-27 15:59:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:26,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:26,782 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:26,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1665583732, now seen corresponding path program 1 times [2021-08-27 15:59:26,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:26,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728148328] [2021-08-27 15:59:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:26,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:59:26,957 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 15:59:26,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:59:26,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728148328] [2021-08-27 15:59:26,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728148328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:59:26,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:59:26,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:59:26,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301856578] [2021-08-27 15:59:26,962 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:59:26,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:59:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:59:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:59:26,979 INFO L87 Difference]: Start difference. First operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 15:59:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:59:27,042 INFO L93 Difference]: Finished difference Result 442 states and 648 transitions. [2021-08-27 15:59:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:59:27,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 442 states and 648 transitions. [2021-08-27 15:59:27,049 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 290 [2021-08-27 15:59:27,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 442 states to 428 states and 633 transitions. [2021-08-27 15:59:27,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 428 [2021-08-27 15:59:27,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 428 [2021-08-27 15:59:27,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 428 states and 633 transitions. [2021-08-27 15:59:27,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:59:27,065 INFO L681 BuchiCegarLoop]: Abstraction has 428 states and 633 transitions. [2021-08-27 15:59:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states and 633 transitions. [2021-08-27 15:59:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-08-27 15:59:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 426 states have (on average 1.4788732394366197) internal successors, (630), 425 states have internal predecessors, (630), 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 15:59:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 630 transitions. [2021-08-27 15:59:27,093 INFO L704 BuchiCegarLoop]: Abstraction has 426 states and 630 transitions. [2021-08-27 15:59:27,093 INFO L587 BuchiCegarLoop]: Abstraction has 426 states and 630 transitions. [2021-08-27 15:59:27,093 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:59:27,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 426 states and 630 transitions. [2021-08-27 15:59:27,095 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 288 [2021-08-27 15:59:27,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:27,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:27,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:27,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:27,096 INFO L791 eck$LassoCheckResult]: Stem: 904#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(13);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string58.base, #t~string58.offset, 1);call write~init~int(80, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(117, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(109, #t~string58.base, 3 + #t~string58.offset, 1);call write~init~int(112, #t~string58.base, 4 + #t~string58.offset, 1);call write~init~int(58, #t~string58.base, 5 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 6 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(110, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 3 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string64.base, #t~string64.offset, 1);call write~init~int(32, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string66.base, #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 1 + #t~string66.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 876#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 762#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 763#L84 main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 724#L570 assume 0 != main_~tmp~4; 717#L546 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~11, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~11;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 718#L99-1 [2021-08-27 15:59:27,096 INFO L793 eck$LassoCheckResult]: Loop: 718#L99-1 assume !false; 697#L970 assume test_~splverifierCounter~0 < 4; 698#L971 test_~tmp~11 := test_#t~nondet79;havoc test_#t~nondet79; 822#L979 assume !(0 != test_~tmp~11); 814#L979-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 815#L989 assume !(0 != test_~tmp___0~3); 677#L989-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 678#L999 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 782#L1007-1 assume !(0 != ~pumpRunning~0); 776#L599 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 886#L683 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret47, processEnvironment__wrappee__methaneQuery_~tmp~6;havoc processEnvironment__wrappee__methaneQuery_~tmp~6; 792#L657-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 793#L631-3 assume !(0 == ~pumpRunning~0); 701#L606 havoc __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_#t~ret9, __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~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 819#L899-5 __utac_acc__Specification1_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret8;havoc __utac_acc__Specification1_spec__1_#t~ret8; 810#L99 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 718#L99-1 [2021-08-27 15:59:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:59:27,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:27,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162168243] [2021-08-27 15:59:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:27,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,136 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1220566465, now seen corresponding path program 1 times [2021-08-27 15:59:27,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:27,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591348070] [2021-08-27 15:59:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:27,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:59:27,201 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 15:59:27,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:59:27,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591348070] [2021-08-27 15:59:27,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591348070] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:59:27,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:59:27,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:59:27,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777521805] [2021-08-27 15:59:27,206 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:59:27,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:59:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:59:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:59:27,207 INFO L87 Difference]: Start difference. First operand 426 states and 630 transitions. cyclomatic complexity: 207 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:59:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:59:27,311 INFO L93 Difference]: Finished difference Result 419 states and 586 transitions. [2021-08-27 15:59:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:59:27,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 419 states and 586 transitions. [2021-08-27 15:59:27,314 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-08-27 15:59:27,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 419 states to 419 states and 586 transitions. [2021-08-27 15:59:27,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 419 [2021-08-27 15:59:27,316 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 419 [2021-08-27 15:59:27,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 419 states and 586 transitions. [2021-08-27 15:59:27,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:59:27,317 INFO L681 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 15:59:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states and 586 transitions. [2021-08-27 15:59:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-08-27 15:59:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 419 states have (on average 1.3985680190930787) internal successors, (586), 418 states have internal predecessors, (586), 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 15:59:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 586 transitions. [2021-08-27 15:59:27,325 INFO L704 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 15:59:27,325 INFO L587 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 15:59:27,325 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:59:27,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 419 states and 586 transitions. [2021-08-27 15:59:27,327 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-08-27 15:59:27,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:59:27,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:59:27,328 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:59:27,328 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:59:27,328 INFO L791 eck$LassoCheckResult]: Stem: 1723#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(13);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string58.base, #t~string58.offset, 1);call write~init~int(80, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(117, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(109, #t~string58.base, 3 + #t~string58.offset, 1);call write~init~int(112, #t~string58.base, 4 + #t~string58.offset, 1);call write~init~int(58, #t~string58.base, 5 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 6 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(110, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(102, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 3 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string64.base, #t~string64.offset, 1);call write~init~int(32, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string66.base, #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 1 + #t~string66.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1609#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 1610#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1656#L84 main_#t~ret45 := valid_product_#res;main_~tmp~4 := main_#t~ret45;havoc main_#t~ret45; 1608#L570 assume 0 != main_~tmp~4; 1593#L546 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~11, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~11;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1594#L99-1 [2021-08-27 15:59:27,328 INFO L793 eck$LassoCheckResult]: Loop: 1594#L99-1 assume !false; 1561#L970 assume test_~splverifierCounter~0 < 4; 1562#L971 test_~tmp~11 := test_#t~nondet79;havoc test_#t~nondet79; 1771#L979 assume !(0 != test_~tmp~11); 1717#L979-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1589#L989 assume !(0 != test_~tmp___0~3); 1531#L989-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1532#L999 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1681#L1007-1 assume !(0 != ~pumpRunning~0); 1647#L599 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1648#L683 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret47, processEnvironment__wrappee__methaneQuery_~tmp~6;havoc processEnvironment__wrappee__methaneQuery_~tmp~6; 1676#L657-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1698#L631-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret67, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1587#L939-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1588#L944-3 isHighWaterLevel_#t~ret67 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret67;havoc isHighWaterLevel_#t~ret67; 1806#L802-9 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~1 := 0; 1804#L802-11 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1798#L808-3 processEnvironment__wrappee__highWaterSensor_#t~ret46 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret46;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46; 1649#L635-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1572#L606 havoc __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_#t~ret9, __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~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1756#L899-5 __utac_acc__Specification1_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret8;havoc __utac_acc__Specification1_spec__1_#t~ret8; 1757#L99 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 1594#L99-1 [2021-08-27 15:59:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:27,329 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:59:27,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:27,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205527112] [2021-08-27 15:59:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:27,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,381 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:27,425 INFO L82 PathProgramCache]: Analyzing trace with hash -231328531, now seen corresponding path program 1 times [2021-08-27 15:59:27,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:27,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812554338] [2021-08-27 15:59:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:27,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,428 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:59:27,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1021976595, now seen corresponding path program 1 times [2021-08-27 15:59:27,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:59:27,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719279950] [2021-08-27 15:59:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:59:27,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:59:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,447 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:59:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:59:27,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:00:06,090 WARN L207 SmtUtils]: Spent 38.38 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:00:44,496 WARN L207 SmtUtils]: Spent 19.06 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:00:44,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:00:44 BoogieIcfgContainer [2021-08-27 16:00:44,581 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:00:44,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:00:44,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:00:44,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:00:44,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:26" (3/4) ... [2021-08-27 16:00:44,583 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:00:44,621 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:00:44,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:00:44,622 INFO L168 Benchmark]: Toolchain (without parser) took 79494.80 ms. Allocated memory was 71.3 MB in the beginning and 117.4 MB in the end (delta: 46.1 MB). Free memory was 55.2 MB in the beginning and 88.3 MB in the end (delta: -33.2 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,623 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:00:44,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.66 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 47.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.07 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 41.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,624 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 37.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,624 INFO L168 Benchmark]: RCFGBuilder took 874.89 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 37.8 MB in the beginning and 53.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,632 INFO L168 Benchmark]: BuchiAutomizer took 78109.11 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 23.4 MB in the end (delta: 29.8 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,632 INFO L168 Benchmark]: Witness Printer took 40.46 ms. Allocated memory is still 117.4 MB. Free memory was 23.4 MB in the beginning and 88.3 MB in the end (delta: -65.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:44,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.66 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 47.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.07 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 41.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 37.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 874.89 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 37.8 MB in the beginning and 53.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 78109.11 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 23.4 MB in the end (delta: 29.8 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. * Witness Printer took 40.46 ms. Allocated memory is still 117.4 MB. Free memory was 23.4 MB in the beginning and 88.3 MB in the end (delta: -65.0 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 419 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 78.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 77.7s. 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 28.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 426 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 496 SDslu, 392 SDs, 0 SdLazy, 53 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.2ms 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: 969]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8856} State at position 1 is {NULL=0, NULL=0, NULL=8856, NULL=0, NULL=0, NULL=0, NULL=8876, methaneLevelCritical=0, NULL=8862, retValue_acc=0, tmp___1=0, NULL=8865, NULL=0, NULL=8870, cleanupTimeShifts=4, NULL=8868, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@261f7f29=0, waterLevel=1, NULL=0, NULL=0, NULL=8871, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b17dfd9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65550636=0, NULL=8880, \result=1, head=0, pumpRunning=0, NULL=8881, tmp=1, NULL=0, NULL=0, tmp=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=8860, tmp=1, NULL=8882, head=0, NULL=0, NULL=8864, tmp=0, NULL=0, NULL=0, NULL=0, NULL=8878, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@151927a0=0, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62b07b54=0, NULL=8869, NULL=8877, NULL=8884, NULL=8883, tmp___0=0, NULL=8879, NULL=8866, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40148889=0, NULL=0, tmp___0=0, NULL=8861, NULL=8867, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50430e0a=0, NULL=0, NULL=0, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22326c87=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ee62344=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77e18f8c=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=8857, \result=0, NULL=8874, NULL=8875, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6aaa7711=0, NULL=8858, retValue_acc=1, retValue_acc=1, tmp___2=64, tmp=0, splverifierCounter=0, NULL=0, \result=0, NULL=8859, NULL=8863, NULL=8872, NULL=8873} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L286] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L483] int cleanupTimeShifts = 4; [L592] int pumpRunning = 0; [L593] int systemActive = 1; [L856] int waterLevel = 1; [L857] int methaneLevelCritical = 0; [L561] int retValue_acc ; [L562] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L568] tmp = valid_product() [L570] COND TRUE \read(tmp) [L960] int splverifierCounter ; [L961] int tmp ; [L962] int tmp___0 ; [L963] int tmp___1 ; [L964] int tmp___2 ; [L967] splverifierCounter = 0 Loop: [L969] COND TRUE 1 [L971] COND TRUE splverifierCounter < 4 [L977] tmp = __VERIFIER_nondet_int() [L979] COND FALSE !(\read(tmp)) [L987] tmp___0 = __VERIFIER_nondet_int() [L989] COND FALSE !(\read(tmp___0)) [L997] tmp___2 = __VERIFIER_nondet_int() [L999] COND TRUE \read(tmp___2) [L850] systemActive = 1 [L599] COND FALSE !(\read(pumpRunning)) [L606] COND TRUE \read(systemActive) [L680] int tmp ; [L683] COND FALSE !(\read(pumpRunning)) [L654] int tmp ; [L657] COND FALSE !(\read(pumpRunning)) [L628] int tmp ; [L631] COND TRUE ! pumpRunning [L794] int retValue_acc ; [L795] int tmp ; [L796] int tmp___0 ; [L936] int retValue_acc ; [L939] COND TRUE waterLevel < 2 [L940] retValue_acc = 1 [L941] return (retValue_acc); [L800] tmp = isHighWaterSensorDry() [L802] COND TRUE \read(tmp) [L803] tmp___0 = 0 [L807] retValue_acc = tmp___0 [L808] return (retValue_acc); [L633] tmp = isHighWaterLevel() [L635] COND FALSE !(\read(tmp)) [L92] int tmp ; [L93] int tmp___0 ; [L895] int retValue_acc ; [L898] retValue_acc = methaneLevelCritical [L899] return (retValue_acc); [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:00:44,688 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...