./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product57.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_spec2_product57.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 26f7660d8ab24b35503e9d3e9f36c3801ecfd446 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:05:46,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:46,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:46,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:46,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:46,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:46,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:46,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:46,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:46,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:46,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:46,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:46,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:46,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:46,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:46,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:46,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:46,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:46,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:46,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:46,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:46,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:46,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:46,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:46,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:46,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:46,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:46,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:46,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:46,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:46,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:46,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:46,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:46,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:46,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:46,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:46,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:46,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:46,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:46,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:46,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:46,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:46,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:46,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:46,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:46,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:46,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:46,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:46,503 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:46,503 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:46,503 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:46,504 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:46,504 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:46,504 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:46,504 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:46,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:46,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:46,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:46,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:46,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:46,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:46,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:46,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:46,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:46,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:46,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:46,507 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:46,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:46,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:46,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:46,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:46,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:46,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:46,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:46,510 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:46,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26f7660d8ab24b35503e9d3e9f36c3801ecfd446 [2021-08-27 16:05:46,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:46,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:46,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:46,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:46,808 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:46,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c [2021-08-27 16:05:46,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdc97002/6cf5e45d75eb4cfab3b5e91e16a52ae8/FLAGe33e70bd9 [2021-08-27 16:05:47,386 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:47,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product57.cil.c [2021-08-27 16:05:47,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdc97002/6cf5e45d75eb4cfab3b5e91e16a52ae8/FLAGe33e70bd9 [2021-08-27 16:05:47,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdc97002/6cf5e45d75eb4cfab3b5e91e16a52ae8 [2021-08-27 16:05:47,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:47,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:47,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:47,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:47,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:47,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:47" (1/1) ... [2021-08-27 16:05:47,713 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 04:05:47, skipping insertion in model container [2021-08-27 16:05:47,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:47" (1/1) ... [2021-08-27 16:05:47,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:47,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:48,033 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_spec2_product57.cil.c[18716,18729] [2021-08-27 16:05:48,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:48,052 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:48,138 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_spec2_product57.cil.c[18716,18729] [2021-08-27 16:05:48,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:48,154 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48 WrapperNode [2021-08-27 16:05:48,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:48,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:48,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:48,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:48,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:48,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:48,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:48,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:48,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:48,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:48,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:48,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:48,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (1/1) ... [2021-08-27 16:05:48,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:48,334 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 16:05:48,364 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 16:05:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:49,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:49,144 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-08-27 16:05:49,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:49 BoogieIcfgContainer [2021-08-27 16:05:49,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:49,148 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:49,148 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:49,150 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:49,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:49,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:47" (1/3) ... [2021-08-27 16:05:49,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19599819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:49, skipping insertion in model container [2021-08-27 16:05:49,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:49,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:48" (2/3) ... [2021-08-27 16:05:49,153 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19599819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:49, skipping insertion in model container [2021-08-27 16:05:49,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:49,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:49" (3/3) ... [2021-08-27 16:05:49,155 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2021-08-27 16:05:49,203 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:49,204 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:49,204 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:49,204 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:49,204 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:49,204 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:49,204 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:49,205 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:49,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 16:05:49,263 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:05:49,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:49,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:49,271 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:49,272 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:49,272 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:49,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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 16:05:49,289 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:05:49,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:49,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:49,291 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:49,291 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:49,300 INFO L791 eck$LassoCheckResult]: Stem: 126#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 35#L-1true havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 125#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 55#L75true main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 136#L278true assume 0 != main_~tmp~0; 50#L252true ~methAndRunningLastTime~0 := 0; 61#L300true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 53#L311-1true [2021-08-27 16:05:49,301 INFO L793 eck$LassoCheckResult]: Loop: 53#L311-1true assume !false; 65#L561true assume test_~splverifierCounter~0 < 4; 82#L562true test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 34#L570true assume !(0 != test_~tmp~7); 135#L570-1true test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 4#L580true assume !(0 != test_~tmp___0~3); 130#L580-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 45#L590true assume 0 != test_~tmp___2~0; 118#L596-2true assume !(0 != ~pumpRunning~0); 31#L342true assume !(0 != ~systemActive~0); 87#L349true havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 96#L131-2true __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 48#L311true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 53#L311-1true [2021-08-27 16:05:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:05:49,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:49,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714879402] [2021-08-27 16:05:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:49,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:49,560 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:49,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:49,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:49,719 INFO L82 PathProgramCache]: Analyzing trace with hash 5185098, now seen corresponding path program 1 times [2021-08-27 16:05:49,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:49,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739938990] [2021-08-27 16:05:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:49,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:49,729 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:49,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:49,750 INFO L82 PathProgramCache]: Analyzing trace with hash 838481604, now seen corresponding path program 1 times [2021-08-27 16:05:49,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:49,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680103685] [2021-08-27 16:05:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:49,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:49,893 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 16:05:49,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:49,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680103685] [2021-08-27 16:05:49,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680103685] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:49,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:49,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:05:49,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664870448] [2021-08-27 16:05:50,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:05:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:05:50,044 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 16:05:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:50,252 INFO L93 Difference]: Finished difference Result 136 states and 194 transitions. [2021-08-27 16:05:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:05:50,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 194 transitions. [2021-08-27 16:05:50,269 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:05:50,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 129 states and 187 transitions. [2021-08-27 16:05:50,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2021-08-27 16:05:50,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-08-27 16:05:50,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 187 transitions. [2021-08-27 16:05:50,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:50,275 INFO L681 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 187 transitions. [2021-08-27 16:05:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-08-27 16:05:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.449612403100775) internal successors, (187), 128 states have internal predecessors, (187), 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 16:05:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2021-08-27 16:05:50,318 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:50,318 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 187 transitions. [2021-08-27 16:05:50,318 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:05:50,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 187 transitions. [2021-08-27 16:05:50,320 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:05:50,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:50,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:50,321 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:50,321 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:50,322 INFO L791 eck$LassoCheckResult]: Stem: 417#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 344#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 345#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 376#L75 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 377#L278 assume 0 != main_~tmp~0; 369#L252 ~methAndRunningLastTime~0 := 0; 370#L300 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 353#L311-1 [2021-08-27 16:05:50,322 INFO L793 eck$LassoCheckResult]: Loop: 353#L311-1 assume !false; 375#L561 assume test_~splverifierCounter~0 < 4; 385#L562 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 341#L570 assume !(0 != test_~tmp~7); 343#L570-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 290#L580 assume !(0 != test_~tmp___0~3); 292#L580-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 362#L590 assume 0 != test_~tmp___2~0; 356#L596-2 assume !(0 != ~pumpRunning~0); 334#L342 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 335#L400 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 390#L374-1 assume !(0 == ~pumpRunning~0); 296#L349 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 405#L131-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 364#L311 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 353#L311-1 [2021-08-27 16:05:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:05:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615211653] [2021-08-27 16:05:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,377 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1702188339, now seen corresponding path program 1 times [2021-08-27 16:05:50,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376712474] [2021-08-27 16:05:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:50,471 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 16:05:50,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:50,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376712474] [2021-08-27 16:05:50,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376712474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:50,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:50,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:50,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075335531] [2021-08-27 16:05:50,480 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:50,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:50,481 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. cyclomatic complexity: 60 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 16:05:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:50,569 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2021-08-27 16:05:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:50,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 241 transitions. [2021-08-27 16:05:50,572 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-08-27 16:05:50,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 241 transitions. [2021-08-27 16:05:50,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2021-08-27 16:05:50,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2021-08-27 16:05:50,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 241 transitions. [2021-08-27 16:05:50,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:50,575 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 241 transitions. [2021-08-27 16:05:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-08-27 16:05:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.393063583815029) internal successors, (241), 172 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:05:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2021-08-27 16:05:50,585 INFO L704 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:50,585 INFO L587 BuchiCegarLoop]: Abstraction has 173 states and 241 transitions. [2021-08-27 16:05:50,585 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:05:50,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 241 transitions. [2021-08-27 16:05:50,586 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 118 [2021-08-27 16:05:50,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:50,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:50,587 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:50,587 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 16:05:50,587 INFO L791 eck$LassoCheckResult]: Stem: 729#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 652#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 653#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 687#L75 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 688#L278 assume 0 != main_~tmp~0; 680#L252 ~methAndRunningLastTime~0 := 0; 681#L300 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 663#L311-1 [2021-08-27 16:05:50,587 INFO L793 eck$LassoCheckResult]: Loop: 663#L311-1 assume !false; 684#L561 assume test_~splverifierCounter~0 < 4; 694#L562 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 649#L570 assume !(0 != test_~tmp~7); 651#L570-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 598#L580 assume !(0 != test_~tmp___0~3); 600#L580-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 669#L590 assume 0 != test_~tmp___2~0; 665#L596-2 assume !(0 != ~pumpRunning~0); 643#L342 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 644#L400 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 699#L374-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 642#L171-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 634#L176-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 635#L520-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 715#L520-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 710#L526-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 618#L378-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 606#L349 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 716#L131-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 673#L311 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 663#L311-1 [2021-08-27 16:05:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:05:50,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170073824] [2021-08-27 16:05:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,614 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,646 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,647 INFO L82 PathProgramCache]: Analyzing trace with hash -926194367, now seen corresponding path program 1 times [2021-08-27 16:05:50,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138806104] [2021-08-27 16:05:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:50,673 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 16:05:50,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:50,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138806104] [2021-08-27 16:05:50,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138806104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:50,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:50,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:05:50,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254718974] [2021-08-27 16:05:50,675 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:50,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:05:50,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:05:50,676 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. cyclomatic complexity: 70 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 16:05:50,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:50,809 INFO L93 Difference]: Finished difference Result 481 states and 661 transitions. [2021-08-27 16:05:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:05:50,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 481 states and 661 transitions. [2021-08-27 16:05:50,816 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 338 [2021-08-27 16:05:50,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 481 states to 481 states and 661 transitions. [2021-08-27 16:05:50,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-08-27 16:05:50,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-08-27 16:05:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 661 transitions. [2021-08-27 16:05:50,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:50,833 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 661 transitions. [2021-08-27 16:05:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 661 transitions. [2021-08-27 16:05:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 185. [2021-08-27 16:05:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 184 states have internal predecessors, (253), 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 16:05:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 253 transitions. [2021-08-27 16:05:50,848 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-08-27 16:05:50,848 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 253 transitions. [2021-08-27 16:05:50,848 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:05:50,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 253 transitions. [2021-08-27 16:05:50,849 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:05:50,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:50,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:50,850 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:50,850 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 16:05:50,851 INFO L791 eck$LassoCheckResult]: Stem: 1405#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1317#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~6, main_~tmp~0;havoc main_~retValue_acc~6;havoc main_~tmp~0; 1318#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1354#L75 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 1355#L278 assume 0 != main_~tmp~0; 1347#L252 ~methAndRunningLastTime~0 := 0; 1348#L300 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1329#L311-1 [2021-08-27 16:05:50,851 INFO L793 eck$LassoCheckResult]: Loop: 1329#L311-1 assume !false; 1351#L561 assume test_~splverifierCounter~0 < 4; 1361#L562 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 1314#L570 assume !(0 != test_~tmp~7); 1316#L570-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 1262#L580 assume !(0 != test_~tmp___0~3); 1264#L580-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 1336#L590 assume 0 != test_~tmp___2~0; 1331#L596-2 assume !(0 != ~pumpRunning~0); 1308#L342 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1309#L400 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1366#L374-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1306#L171-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1298#L176-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1299#L520-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1383#L520-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1377#L526-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1282#L378-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1270#L349 havoc __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_#t~ret20, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1384#L131-2 __utac_acc__Specification2_spec__2_#t~ret19 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret19;havoc __utac_acc__Specification2_spec__2_#t~ret19; 1340#L311 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 1329#L311-1 [2021-08-27 16:05:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:05:50,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921871673] [2021-08-27 16:05:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,895 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,932 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1606252737, now seen corresponding path program 1 times [2021-08-27 16:05:50,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840968905] [2021-08-27 16:05:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,939 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,946 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash 166888889, now seen corresponding path program 1 times [2021-08-27 16:05:50,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:50,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979784917] [2021-08-27 16:05:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:50,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:50,970 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:51,049 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:34,296 WARN L207 SmtUtils]: Spent 42.97 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:19,698 WARN L207 SmtUtils]: Spent 21.59 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:19,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:19 BoogieIcfgContainer [2021-08-27 16:07:19,819 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:19,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:19,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:19,820 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:19,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:49" (3/4) ... [2021-08-27 16:07:19,822 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:19,857 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:19,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:19,859 INFO L168 Benchmark]: Toolchain (without parser) took 92152.82 ms. Allocated memory was 65.0 MB in the beginning and 119.5 MB in the end (delta: 54.5 MB). Free memory was 45.1 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,859 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:19,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.63 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 46.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.73 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 42.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,860 INFO L168 Benchmark]: Boogie Preprocessor took 67.67 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,861 INFO L168 Benchmark]: RCFGBuilder took 838.78 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 39.9 MB in the beginning and 61.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,861 INFO L168 Benchmark]: BuchiAutomizer took 90671.27 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 61.5 MB in the beginning and 45.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,861 INFO L168 Benchmark]: Witness Printer took 38.55 ms. Allocated memory is still 119.5 MB. Free memory was 45.6 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:19,863 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 65.0 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.63 ms. Allocated memory is still 65.0 MB. Free memory was 44.8 MB in the beginning and 46.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.73 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 42.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.67 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 838.78 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 39.9 MB in the beginning and 61.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 90671.27 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 61.5 MB in the beginning and 45.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 82.0 MB. Max. memory is 16.1 GB. * Witness Printer took 38.55 ms. Allocated memory is still 119.5 MB. Free memory was 45.6 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 185 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 90.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 89.9s. 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 43.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 296 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 185 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 726 SDtfs, 1069 SDslu, 535 SDs, 0 SdLazy, 98 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 242.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 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: 560]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=29882} State at position 1 is {NULL=0, NULL=29882, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@373b301c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e19c09b=59, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@289d8039=0, NULL=29897, NULL=29910, methaneLevelCritical=0, NULL=0, retValue_acc=0, tmp=0, NULL=29905, NULL=0, tmp___1=0, NULL=0, NULL=29887, cleanupTimeShifts=4, NULL=29899, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7448ade=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=29896, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=29898, NULL=0, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=29909, NULL=43114, methAndRunningLastTime=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@601ec758=0, NULL=29884, NULL=29891, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70a366bc=0, tmp=0, head=0, NULL=0, NULL=0, NULL=43115, NULL=29886, NULL=29883, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13c9c088=0, retValue_acc=0, NULL=29890, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@377cf13e=0, NULL=0, NULL=0, NULL=29889, NULL=0, NULL=0, NULL=29901, NULL=29904, tmp=0, NULL=0, systemActive=1, NULL=29894, NULL=0, \result=0, retValue_acc=0, NULL=29888, \result=0, NULL=29906, NULL=0, NULL=0, tmp___0=0, NULL=29907, NULL=29908, NULL=29902, retValue_acc=1, tmp___2=59, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=29903, NULL=29895, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a3416ec=0, tmp=0, NULL=29900, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67ad7b40=0, NULL=0, NULL=29892} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L191] int cleanupTimeShifts = 4; [L294] int methAndRunningLastTime ; [L335] int pumpRunning = 0; [L336] int systemActive = 1; [L784] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L269] int retValue_acc ; [L270] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L276] tmp = valid_product() [L278] COND TRUE \read(tmp) [L299] methAndRunningLastTime = 0 [L551] int splverifierCounter ; [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L555] int tmp___2 ; [L558] splverifierCounter = 0 Loop: [L560] COND TRUE 1 [L562] COND TRUE splverifierCounter < 4 [L568] tmp = __VERIFIER_nondet_int() [L570] COND FALSE !(\read(tmp)) [L578] tmp___0 = __VERIFIER_nondet_int() [L580] COND FALSE !(\read(tmp___0)) [L588] tmp___2 = __VERIFIER_nondet_int() [L590] COND TRUE \read(tmp___2) [L342] COND FALSE !(\read(pumpRunning)) [L349] COND TRUE \read(systemActive) [L397] int tmp ; [L400] COND FALSE !(\read(pumpRunning)) [L371] int tmp ; [L374] COND TRUE ! pumpRunning [L512] int retValue_acc ; [L513] int tmp ; [L514] int tmp___0 ; [L168] int retValue_acc ; [L171] COND TRUE waterLevel < 2 [L172] retValue_acc = 1 [L173] return (retValue_acc); [L518] tmp = isHighWaterSensorDry() [L520] COND TRUE \read(tmp) [L521] tmp___0 = 0 [L525] retValue_acc = tmp___0 [L526] return (retValue_acc); [L376] tmp = isHighWaterLevel() [L378] COND FALSE !(\read(tmp)) [L304] int tmp ; [L305] int tmp___0 ; [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L309] tmp = isMethaneLevelCritical() [L311] COND FALSE !(\read(tmp)) [L327] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:19,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...