./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product48.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_product48.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 c21e70d9ea27340857124f83eb5ec77ba8828195 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:57:24,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:57:24,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:57:24,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:57:24,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:57:24,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:57:24,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:57:24,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:57:24,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:57:24,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:57:24,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:57:24,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:57:24,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:57:24,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:57:24,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:57:24,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:57:24,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:57:24,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:57:24,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:57:24,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:57:24,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:57:24,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:57:24,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:57:24,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:57:24,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:57:24,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:57:24,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:57:24,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:57:24,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:57:24,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:57:24,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:57:24,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:57:24,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:57:24,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:57:24,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:57:24,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:57:24,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:57:24,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:57:24,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:57:24,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:57:24,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:57:24,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:57:24,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:57:24,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:57:24,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:57:24,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:57:24,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:57:24,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:57:24,591 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:57:24,592 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:57:24,592 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:57:24,592 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:57:24,593 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:57:24,593 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:57:24,593 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:57:24,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:57:24,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:57:24,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:57:24,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:57:24,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:57:24,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:57:24,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:57:24,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:57:24,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:57:24,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:57:24,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:57:24,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:57:24,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:57:24,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:57:24,598 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:57:24,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c21e70d9ea27340857124f83eb5ec77ba8828195 [2021-08-27 15:57:24,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:57:24,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:57:24,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:57:24,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:57:24,925 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:57:24,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c [2021-08-27 15:57:24,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d184a68/d02e1b713fad4a358efcbbb81d40e86a/FLAG528dee45a [2021-08-27 15:57:25,432 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:57:25,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c [2021-08-27 15:57:25,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d184a68/d02e1b713fad4a358efcbbb81d40e86a/FLAG528dee45a [2021-08-27 15:57:25,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d184a68/d02e1b713fad4a358efcbbb81d40e86a [2021-08-27 15:57:25,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:57:25,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:57:25,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:25,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:57:25,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:57:25,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:25" (1/1) ... [2021-08-27 15:57:25,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6154151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:25, skipping insertion in model container [2021-08-27 15:57:25,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:25" (1/1) ... [2021-08-27 15:57:25,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:57:25,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:57:26,143 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_product48.cil.c[16799,16812] [2021-08-27 15:57:26,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:26,190 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:57:26,266 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_product48.cil.c[16799,16812] [2021-08-27 15:57:26,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:26,295 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:57:26,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26 WrapperNode [2021-08-27 15:57:26,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:26,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:26,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:57:26,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:57:26,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:26,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:57:26,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:57:26,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:57:26,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:57:26,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:57:26,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:57:26,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:57:26,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (1/1) ... [2021-08-27 15:57:26,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:57:26,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:57:26,464 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 15:57:26,487 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 15:57:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:57:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:57:26,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:57:26,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:57:27,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:57:27,401 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-08-27 15:57:27,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:27 BoogieIcfgContainer [2021-08-27 15:57:27,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:57:27,404 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:57:27,404 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:57:27,406 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:57:27,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:27,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:57:25" (1/3) ... [2021-08-27 15:57:27,408 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e44069a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:27, skipping insertion in model container [2021-08-27 15:57:27,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:27,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:26" (2/3) ... [2021-08-27 15:57:27,408 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e44069a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:27, skipping insertion in model container [2021-08-27 15:57:27,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:27,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:27" (3/3) ... [2021-08-27 15:57:27,416 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2021-08-27 15:57:27,455 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:57:27,455 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:57:27,455 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:57:27,455 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:57:27,455 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:57:27,455 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:57:27,456 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:57:27,456 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:57:27,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 15:57:27,489 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 15:57:27,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:27,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:27,496 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:27,496 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:27,496 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:57:27,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 15:57:27,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 15:57:27,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:27,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:27,507 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:27,507 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:27,512 INFO L791 eck$LassoCheckResult]: Stem: 118#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 37#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 27#L961true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 15#L969true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 78#L231true assume 0 != main_~tmp~0; 111#L204true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 100#L621-1true [2021-08-27 15:57:27,512 INFO L793 eck$LassoCheckResult]: Loop: 100#L621-1true assume !false; 103#L881true assume test_~splverifierCounter~0 < 4; 36#L882true test_~tmp~9 := test_#t~nondet76;havoc test_#t~nondet76; 47#L890true assume !(0 != test_~tmp~9); 81#L890-1true test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 88#L900true assume !(0 != test_~tmp___0~2); 25#L900-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 13#L910true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 29#L918-1true assume !(0 != ~pumpRunning~0); 97#L650true assume !(0 != ~systemActive~0); 128#L657true havoc __utac_acc__Specification1_spec__1_#t~ret53, __utac_acc__Specification1_spec__1_#t~ret54, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~4;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; 38#L92-3true __utac_acc__Specification1_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret53;havoc __utac_acc__Specification1_spec__1_#t~ret53; 54#L621true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 100#L621-1true [2021-08-27 15:57:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:57:27,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:27,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491410739] [2021-08-27 15:57:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:27,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:27,755 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:27,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1669770356, now seen corresponding path program 1 times [2021-08-27 15:57:27,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:27,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263854329] [2021-08-27 15:57:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:27,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:28,015 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 15:57:28,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:28,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263854329] [2021-08-27 15:57:28,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263854329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:28,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:28,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:28,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382139154] [2021-08-27 15:57:28,023 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:28,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:28,036 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 15:57:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:28,141 INFO L93 Difference]: Finished difference Result 250 states and 360 transitions. [2021-08-27 15:57:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:28,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 250 states and 360 transitions. [2021-08-27 15:57:28,157 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 162 [2021-08-27 15:57:28,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 250 states to 236 states and 345 transitions. [2021-08-27 15:57:28,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 236 [2021-08-27 15:57:28,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 236 [2021-08-27 15:57:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 345 transitions. [2021-08-27 15:57:28,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:28,170 INFO L681 BuchiCegarLoop]: Abstraction has 236 states and 345 transitions. [2021-08-27 15:57:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 345 transitions. [2021-08-27 15:57:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2021-08-27 15:57:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 234 states have (on average 1.4615384615384615) internal successors, (342), 233 states have internal predecessors, (342), 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 15:57:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 342 transitions. [2021-08-27 15:57:28,224 INFO L704 BuchiCegarLoop]: Abstraction has 234 states and 342 transitions. [2021-08-27 15:57:28,224 INFO L587 BuchiCegarLoop]: Abstraction has 234 states and 342 transitions. [2021-08-27 15:57:28,224 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:57:28,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states and 342 transitions. [2021-08-27 15:57:28,232 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2021-08-27 15:57:28,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:28,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:28,234 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:28,235 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:28,235 INFO L791 eck$LassoCheckResult]: Stem: 520#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 448#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 432#L961 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 411#L969 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 412#L231 assume 0 != main_~tmp~0; 502#L204 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 474#L621-1 [2021-08-27 15:57:28,236 INFO L793 eck$LassoCheckResult]: Loop: 474#L621-1 assume !false; 515#L881 assume test_~splverifierCounter~0 < 4; 516#L882 test_~tmp~9 := test_#t~nondet76;havoc test_#t~nondet76; 555#L890 assume !(0 != test_~tmp~9); 553#L890-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 552#L900 assume !(0 != test_~tmp___0~2); 550#L900-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 549#L910 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 407#L918-1 assume !(0 != ~pumpRunning~0); 513#L650 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 398#L708 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 400#L682-1 assume !(0 == ~pumpRunning~0); 535#L657 havoc __utac_acc__Specification1_spec__1_#t~ret53, __utac_acc__Specification1_spec__1_#t~ret54, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~4;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; 534#L92-3 __utac_acc__Specification1_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret53;havoc __utac_acc__Specification1_spec__1_#t~ret53; 473#L621 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 474#L621-1 [2021-08-27 15:57:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:57:28,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:28,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19886913] [2021-08-27 15:57:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:28,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:28,290 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:28,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:28,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824402, now seen corresponding path program 1 times [2021-08-27 15:57:28,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:28,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256560569] [2021-08-27 15:57:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:28,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:28,402 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 15:57:28,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:28,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256560569] [2021-08-27 15:57:28,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256560569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:28,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:28,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:28,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142318315] [2021-08-27 15:57:28,407 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:28,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:28,408 INFO L87 Difference]: Start difference. First operand 234 states and 342 transitions. cyclomatic complexity: 111 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) [2021-08-27 15:57:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:28,576 INFO L93 Difference]: Finished difference Result 317 states and 442 transitions. [2021-08-27 15:57:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:28,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 442 transitions. [2021-08-27 15:57:28,579 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 15:57:28,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 442 transitions. [2021-08-27 15:57:28,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-08-27 15:57:28,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-08-27 15:57:28,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 442 transitions. [2021-08-27 15:57:28,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:28,590 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 442 transitions. [2021-08-27 15:57:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 442 transitions. [2021-08-27 15:57:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-08-27 15:57:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 317 states have (on average 1.3943217665615142) internal successors, (442), 316 states have internal predecessors, (442), 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 15:57:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 442 transitions. [2021-08-27 15:57:28,608 INFO L704 BuchiCegarLoop]: Abstraction has 317 states and 442 transitions. [2021-08-27 15:57:28,609 INFO L587 BuchiCegarLoop]: Abstraction has 317 states and 442 transitions. [2021-08-27 15:57:28,609 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:57:28,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 442 transitions. [2021-08-27 15:57:28,612 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 15:57:28,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:28,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:28,614 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:28,614 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] [2021-08-27 15:57:28,614 INFO L791 eck$LassoCheckResult]: Stem: 1076#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1005#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 987#L961 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 969#L969 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 970#L231 assume 0 != main_~tmp~0; 1056#L204 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1029#L621-1 [2021-08-27 15:57:28,615 INFO L793 eck$LassoCheckResult]: Loop: 1029#L621-1 assume !false; 1068#L881 assume test_~splverifierCounter~0 < 4; 1003#L882 test_~tmp~9 := test_#t~nondet76;havoc test_#t~nondet76; 1004#L890 assume !(0 != test_~tmp~9); 1021#L890-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 1058#L900 assume !(0 != test_~tmp___0~2); 1154#L900-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1153#L910 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 965#L918-1 assume !(0 != ~pumpRunning~0); 1150#L650 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1151#L708 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1141#L682-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1149#L132-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1137#L137-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 1136#L827-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 976#L827-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 977#L833-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 1030#L686-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 1000#L657 havoc __utac_acc__Specification1_spec__1_#t~ret53, __utac_acc__Specification1_spec__1_#t~ret54, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~4;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; 1006#L92-3 __utac_acc__Specification1_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret53;havoc __utac_acc__Specification1_spec__1_#t~ret53; 1007#L621 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 1029#L621-1 [2021-08-27 15:57:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:28,616 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:57:28,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914756883] [2021-08-27 15:57:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:28,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:28,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:28,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:28,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:28,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1301686428, now seen corresponding path program 1 times [2021-08-27 15:57:28,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:28,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577913603] [2021-08-27 15:57:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:28,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:28,778 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 15:57:28,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:28,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577913603] [2021-08-27 15:57:28,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577913603] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:28,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:28,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 15:57:28,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734333751] [2021-08-27 15:57:28,780 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:28,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 15:57:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 15:57:28,781 INFO L87 Difference]: Start difference. First operand 317 states and 442 transitions. cyclomatic complexity: 128 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 15:57:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:28,934 INFO L93 Difference]: Finished difference Result 891 states and 1218 transitions. [2021-08-27 15:57:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 15:57:28,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 891 states and 1218 transitions. [2021-08-27 15:57:28,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 637 [2021-08-27 15:57:28,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 891 states to 891 states and 1218 transitions. [2021-08-27 15:57:28,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 891 [2021-08-27 15:57:28,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 891 [2021-08-27 15:57:28,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 891 states and 1218 transitions. [2021-08-27 15:57:28,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:28,952 INFO L681 BuchiCegarLoop]: Abstraction has 891 states and 1218 transitions. [2021-08-27 15:57:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states and 1218 transitions. [2021-08-27 15:57:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 341. [2021-08-27 15:57:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 341 states have (on average 1.3665689149560116) internal successors, (466), 340 states have internal predecessors, (466), 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 15:57:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 466 transitions. [2021-08-27 15:57:28,966 INFO L704 BuchiCegarLoop]: Abstraction has 341 states and 466 transitions. [2021-08-27 15:57:28,966 INFO L587 BuchiCegarLoop]: Abstraction has 341 states and 466 transitions. [2021-08-27 15:57:28,966 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 15:57:28,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 466 transitions. [2021-08-27 15:57:28,968 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-08-27 15:57:28,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:28,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:28,970 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:28,970 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] [2021-08-27 15:57:28,971 INFO L791 eck$LassoCheckResult]: Stem: 2326#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2225#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 2207#L961 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 2187#L969 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 2188#L231 assume 0 != main_~tmp~0; 2291#L204 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2318#L621-1 [2021-08-27 15:57:28,971 INFO L793 eck$LassoCheckResult]: Loop: 2318#L621-1 assume !false; 2423#L881 assume test_~splverifierCounter~0 < 4; 2422#L882 test_~tmp~9 := test_#t~nondet76;havoc test_#t~nondet76; 2421#L890 assume !(0 != test_~tmp~9); 2419#L890-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 2418#L900 assume !(0 != test_~tmp___0~2); 2416#L900-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2415#L910 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2183#L918-1 assume !(0 != ~pumpRunning~0); 2212#L650 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2173#L708 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 2174#L682-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2204#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2288#L137-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 2289#L827-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2413#L827-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2412#L833-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 2411#L686-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 2273#L657 havoc __utac_acc__Specification1_spec__1_#t~ret53, __utac_acc__Specification1_spec__1_#t~ret54, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~4;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; 2226#L92-3 __utac_acc__Specification1_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret53;havoc __utac_acc__Specification1_spec__1_#t~ret53; 2227#L621 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 2318#L621-1 [2021-08-27 15:57:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:28,972 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 15:57:28,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:28,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704115323] [2021-08-27 15:57:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:28,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,012 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,049 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash 621628058, now seen corresponding path program 1 times [2021-08-27 15:57:29,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:29,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889540121] [2021-08-27 15:57:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:29,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,056 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1077699252, now seen corresponding path program 1 times [2021-08-27 15:57:29,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:29,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106974083] [2021-08-27 15:57:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:29,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,090 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:29,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:10,241 WARN L207 SmtUtils]: Spent 40.71 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:58:52,176 WARN L207 SmtUtils]: Spent 20.03 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:58:52,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:58:52 BoogieIcfgContainer [2021-08-27 15:58:52,316 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:58:52,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:58:52,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:58:52,320 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:58:52,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:27" (3/4) ... [2021-08-27 15:58:52,323 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:58:52,362 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:58:52,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:58:52,363 INFO L168 Benchmark]: Toolchain (without parser) took 86555.00 ms. Allocated memory was 71.3 MB in the beginning and 117.4 MB in the end (delta: 46.1 MB). Free memory was 50.1 MB in the beginning and 65.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,363 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 51.8 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:58:52,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.86 ms. Allocated memory is still 71.3 MB. Free memory was 50.0 MB in the beginning and 47.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.61 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 43.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,364 INFO L168 Benchmark]: Boogie Preprocessor took 60.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 40.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,365 INFO L168 Benchmark]: RCFGBuilder took 961.30 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 40.6 MB in the beginning and 47.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,365 INFO L168 Benchmark]: BuchiAutomizer took 84912.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 67.6 MB in the end (delta: -20.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:52,366 INFO L168 Benchmark]: Witness Printer took 45.13 ms. Allocated memory is still 117.4 MB. Free memory was 67.6 MB in the beginning and 65.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:58:52,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 51.8 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.86 ms. Allocated memory is still 71.3 MB. Free memory was 50.0 MB in the beginning and 47.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.61 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 43.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 40.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 961.30 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 40.6 MB in the beginning and 47.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84912.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 67.6 MB in the end (delta: -20.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. * Witness Printer took 45.13 ms. Allocated memory is still 117.4 MB. Free memory was 67.6 MB in the beginning and 65.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 341 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 84.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 74.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 552 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 341 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 688 SDtfs, 650 SDslu, 654 SDs, 0 SdLazy, 101 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 235.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 880]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=27120, NULL=0, NULL=1, NULL=27113, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26965e2a=0, NULL=27107, methaneLevelCritical=0, retValue_acc=1, NULL=0, retValue_acc=0, NULL=27134, tmp___1=0, tmp=0, NULL=0, NULL=27124, NULL=27118, cleanupTimeShifts=4, NULL=27123, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f8726bd=0, NULL=27121, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@353da709=0, NULL=0, NULL=0, NULL=0, NULL=27129, \result=1, head=0, pumpRunning=0, tmp=1, NULL=27133, NULL=0, retValue_acc=1, NULL=0, tmp=0, \result=1, NULL=0, NULL=0, tmp=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c98ca3e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@245ff9ba=0, head=0, tmp=0, NULL=0, NULL=0, NULL=27108, tmp=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=27117, NULL=27128, NULL=27110, NULL=27122, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7256296=0, tmp___0=0, NULL=27116, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=27109, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61317a22=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42548062=81, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1504d8b1=0, NULL=0, systemActive=1, NULL=0, NULL=27119, \result=0, NULL=0, NULL=27131, NULL=0, NULL=27111, NULL=27126, \result=0, NULL=27115, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fb2e9d4=0, NULL=27127, NULL=27114, tmp___2=81, splverifierCounter=0, NULL=0, \result=0, NULL=27112, NULL=27130, NULL=27125, NULL=27132, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L143] int cleanupTimeShifts = 4; [L414] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L643] int pumpRunning = 0; [L644] int systemActive = 1; [L222] int retValue_acc ; [L223] int tmp ; [L965] int retValue_acc ; [L968] retValue_acc = 1 [L969] return (retValue_acc); [L229] tmp = valid_product() [L231] COND TRUE \read(tmp) [L871] int splverifierCounter ; [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L875] int tmp___2 ; [L878] splverifierCounter = 0 Loop: [L880] COND TRUE 1 [L882] COND TRUE splverifierCounter < 4 [L888] tmp = __VERIFIER_nondet_int() [L890] COND FALSE !(\read(tmp)) [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L856] systemActive = 1 [L650] COND FALSE !(\read(pumpRunning)) [L657] COND TRUE \read(systemActive) [L705] int tmp ; [L708] COND FALSE !(\read(pumpRunning)) [L679] int tmp ; [L682] COND TRUE ! pumpRunning [L819] int retValue_acc ; [L820] int tmp ; [L821] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L825] tmp = isHighWaterSensorDry() [L827] COND TRUE \read(tmp) [L828] tmp___0 = 0 [L832] retValue_acc = tmp___0 [L833] return (retValue_acc); [L684] tmp = isHighWaterLevel() [L686] COND FALSE !(\read(tmp)) [L614] int tmp ; [L615] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L619] tmp = isMethaneLevelCritical() [L621] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:58:52,423 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...