./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product31.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 d04a081dc9d0da3f0fd6fd57a31d7ab84af864dd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:24:05,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:24:05,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:24:05,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:24:05,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:24:05,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:24:05,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:24:05,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:24:05,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:24:05,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:24:05,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:24:05,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:24:05,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:24:05,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:24:05,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:24:05,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:24:05,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:24:05,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:24:05,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:24:05,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:24:05,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:24:05,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:24:05,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:24:05,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:24:05,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:24:05,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:24:05,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:24:05,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:24:05,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:24:05,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:24:05,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:24:05,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:24:05,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:24:05,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:24:05,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:24:05,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:24:05,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:24:05,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:24:05,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:24:05,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:24:05,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:24:05,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:24:05,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:24:05,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:24:05,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:24:05,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:24:05,448 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:24:05,448 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:24:05,448 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:24:05,449 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:24:05,449 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:24:05,449 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:24:05,450 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:24:05,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:24:05,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:24:05,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:24:05,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:24:05,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:24:05,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:24:05,452 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:24:05,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:24:05,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:24:05,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:24:05,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:24:05,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:24:05,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:24:05,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:24:05,455 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:24:05,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d04a081dc9d0da3f0fd6fd57a31d7ab84af864dd [2021-07-06 20:24:05,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:24:05,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:24:05,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:24:05,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:24:05,778 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:24:05,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c [2021-07-06 20:24:05,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fb664fb/4325755cfe2d412daccc12c582c37603/FLAGef8a5c759 [2021-07-06 20:24:06,300 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:24:06,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c [2021-07-06 20:24:06,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fb664fb/4325755cfe2d412daccc12c582c37603/FLAGef8a5c759 [2021-07-06 20:24:06,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fb664fb/4325755cfe2d412daccc12c582c37603 [2021-07-06 20:24:06,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:24:06,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:24:06,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:24:06,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:24:06,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:24:06,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:24:06" (1/1) ... [2021-07-06 20:24:06,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265f259f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:06, skipping insertion in model container [2021-07-06 20:24:06,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:24:06" (1/1) ... [2021-07-06 20:24:06,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:24:06,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:24:06,902 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c[2660,2673] [2021-07-06 20:24:07,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:24:07,026 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:24:07,040 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product31.cil.c[2660,2673] [2021-07-06 20:24:07,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:24:07,097 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:24:07,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07 WrapperNode [2021-07-06 20:24:07,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:24:07,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:24:07,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:24:07,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:24:07,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:24:07,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:24:07,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:24:07,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:24:07,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:24:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:24:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:24:07,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:24:07,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (1/1) ... [2021-07-06 20:24:07,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:24:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:24:07,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:24:07,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:24:07,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:24:07,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:24:07,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:24:07,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:24:08,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:24:08,063 INFO L299 CfgBuilder]: Removed 166 assume(true) statements. [2021-07-06 20:24:08,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:24:08 BoogieIcfgContainer [2021-07-06 20:24:08,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:24:08,066 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:24:08,066 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:24:08,068 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:24:08,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:24:08,069 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:24:06" (1/3) ... [2021-07-06 20:24:08,070 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50aeb0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:24:08, skipping insertion in model container [2021-07-06 20:24:08,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:24:08,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:24:07" (2/3) ... [2021-07-06 20:24:08,071 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50aeb0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:24:08, skipping insertion in model container [2021-07-06 20:24:08,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:24:08,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:24:08" (3/3) ... [2021-07-06 20:24:08,072 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2021-07-06 20:24:08,106 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:24:08,106 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:24:08,107 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:24:08,107 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:24:08,107 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:24:08,107 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:24:08,107 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:24:08,107 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:24:08,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:24:08,147 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:24:08,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:24:08,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:24:08,159 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:24:08,159 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:24:08,160 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:24:08,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:24:08,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:24:08,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:24:08,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:24:08,173 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:24:08,173 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:24:08,183 INFO L791 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 8#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 37#L857true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 59#L865true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 84#L952true assume 0 != main_~tmp~9; 24#L929true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 41#L813-1true [2021-07-06 20:24:08,184 INFO L793 eck$LassoCheckResult]: Loop: 41#L813-1true assume !false; 36#L527true assume test_~splverifierCounter~0 < 4; 91#L528true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 97#L536true assume !(0 != test_~tmp~3); 99#L536-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 40#L546true assume !(0 != test_~tmp___0~0); 42#L546-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 80#L556true assume 0 != test_~tmp___2~0; 68#L562-1true assume !(0 != ~pumpRunning~0); 63#L595true assume !(0 != ~systemActive~0); 111#L602true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 21#L92-1true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 66#L807true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 41#L813-1true [2021-07-06 20:24:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:24:08,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:08,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675465748] [2021-07-06 20:24:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:08,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:08,443 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:08,511 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:08,537 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:08,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1671709762, now seen corresponding path program 1 times [2021-07-06 20:24:08,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:08,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866548937] [2021-07-06 20:24:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:08,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:08,549 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:08,558 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:08,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 42569176, now seen corresponding path program 1 times [2021-07-06 20:24:08,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:08,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816555936] [2021-07-06 20:24:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:08,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:24:08,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:08,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:08,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:08,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:24:08,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:24:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:24:08,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:24:08,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816555936] [2021-07-06 20:24:08,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816555936] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:24:08,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:24:08,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:24:08,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132448663] [2021-07-06 20:24:08,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:08,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:24:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:24:08,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:24:08,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:24:08,767 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:24:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:24:08,957 INFO L93 Difference]: Finished difference Result 270 states and 381 transitions. [2021-07-06 20:24:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:24:08,959 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 381 transitions. [2021-07-06 20:24:08,965 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 173 [2021-07-06 20:24:08,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 249 states and 360 transitions. [2021-07-06 20:24:08,972 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 249 [2021-07-06 20:24:08,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 249 [2021-07-06 20:24:08,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 360 transitions. [2021-07-06 20:24:08,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:24:08,975 INFO L681 BuchiCegarLoop]: Abstraction has 249 states and 360 transitions. [2021-07-06 20:24:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 360 transitions. [2021-07-06 20:24:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 150. [2021-07-06 20:24:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.44) internal successors, (216), 149 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:24:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2021-07-06 20:24:09,012 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 216 transitions. [2021-07-06 20:24:09,012 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 216 transitions. [2021-07-06 20:24:09,012 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:24:09,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 216 transitions. [2021-07-06 20:24:09,014 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 104 [2021-07-06 20:24:09,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:24:09,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:24:09,014 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:24:09,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:24:09,015 INFO L791 eck$LassoCheckResult]: Stem: 493#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 407#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 408#L857 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 450#L865 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 480#L952 assume 0 != main_~tmp~9; 429#L929 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 430#L813-1 [2021-07-06 20:24:09,015 INFO L793 eck$LassoCheckResult]: Loop: 430#L813-1 assume !false; 448#L527 assume test_~splverifierCounter~0 < 4; 449#L528 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 498#L536 assume !(0 != test_~tmp~3); 471#L536-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 454#L546 assume !(0 != test_~tmp___0~0); 455#L546-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 457#L556 assume 0 != test_~tmp___2~0; 489#L562-1 assume !(0 != ~pumpRunning~0); 485#L595 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 475#L653 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret56, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 476#L627-1 assume !(0 != ~pumpRunning~0); 477#L602 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 425#L92-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 426#L807 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 430#L813-1 [2021-07-06 20:24:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,016 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:24:09,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676110284] [2021-07-06 20:24:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,060 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,088 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1950294320, now seen corresponding path program 1 times [2021-07-06 20:24:09,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431360168] [2021-07-06 20:24:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,104 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,106 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,109 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,110 INFO L82 PathProgramCache]: Analyzing trace with hash 104912074, now seen corresponding path program 1 times [2021-07-06 20:24:09,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851447380] [2021-07-06 20:24:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:24:09,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:09,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:09,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:09,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:09,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:24:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:24:09,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:24:09,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851447380] [2021-07-06 20:24:09,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851447380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:24:09,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:24:09,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:24:09,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363131090] [2021-07-06 20:24:09,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:09,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 20:24:09,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:24:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:24:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:24:09,228 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. cyclomatic complexity: 69 Second operand has 5 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) [2021-07-06 20:24:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:24:09,370 INFO L93 Difference]: Finished difference Result 511 states and 749 transitions. [2021-07-06 20:24:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:24:09,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 749 transitions. [2021-07-06 20:24:09,377 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 367 [2021-07-06 20:24:09,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 511 states and 749 transitions. [2021-07-06 20:24:09,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 511 [2021-07-06 20:24:09,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 511 [2021-07-06 20:24:09,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 511 states and 749 transitions. [2021-07-06 20:24:09,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:24:09,391 INFO L681 BuchiCegarLoop]: Abstraction has 511 states and 749 transitions. [2021-07-06 20:24:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states and 749 transitions. [2021-07-06 20:24:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 294. [2021-07-06 20:24:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 294 states have (on average 1.4217687074829932) internal successors, (418), 293 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:24:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 418 transitions. [2021-07-06 20:24:09,418 INFO L704 BuchiCegarLoop]: Abstraction has 294 states and 418 transitions. [2021-07-06 20:24:09,418 INFO L587 BuchiCegarLoop]: Abstraction has 294 states and 418 transitions. [2021-07-06 20:24:09,419 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:24:09,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 418 transitions. [2021-07-06 20:24:09,422 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 208 [2021-07-06 20:24:09,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:24:09,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:24:09,424 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:24:09,424 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:24:09,425 INFO L791 eck$LassoCheckResult]: Stem: 1187#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1086#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 1087#L857 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1133#L865 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 1167#L952 assume 0 != main_~tmp~9; 1110#L929 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1111#L813-1 [2021-07-06 20:24:09,425 INFO L793 eck$LassoCheckResult]: Loop: 1111#L813-1 assume !false; 1131#L527 assume test_~splverifierCounter~0 < 4; 1132#L528 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 1197#L536 assume !(0 != test_~tmp~3); 1156#L536-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 1138#L546 assume !(0 != test_~tmp___0~0); 1139#L546-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 1141#L556 assume 0 != test_~tmp___2~0; 1177#L562-1 assume !(0 != ~pumpRunning~0); 1172#L595 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1173#L653 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret56, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1192#L627-1 assume !(0 != ~pumpRunning~0); 1164#L602 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1221#L92-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 1178#L807 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1179#L124 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1136#L813 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1111#L813-1 [2021-07-06 20:24:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:24:09,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978534345] [2021-07-06 20:24:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,470 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,510 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,518 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:09,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1627108098, now seen corresponding path program 1 times [2021-07-06 20:24:09,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697209132] [2021-07-06 20:24:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,524 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,526 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,529 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:24:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2036262940, now seen corresponding path program 1 times [2021-07-06 20:24:09,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:24:09,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794351629] [2021-07-06 20:24:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:24:09,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:24:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,556 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:24:09,597 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:24:09,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:24:09,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-07-06 20:24:50,442 WARN L205 SmtUtils]: Spent 40.75 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:24:50,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:50,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:25:10,422 WARN L205 SmtUtils]: Spent 19.90 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:25:10,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:25:10 BoogieIcfgContainer [2021-07-06 20:25:10,587 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:25:10,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:25:10,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:25:10,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:25:10,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:24:08" (3/4) ... [2021-07-06 20:25:10,591 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:25:10,676 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:25:10,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:25:10,678 INFO L168 Benchmark]: Toolchain (without parser) took 64021.91 ms. Allocated memory was 54.5 MB in the beginning and 107.0 MB in the end (delta: 52.4 MB). Free memory was 31.2 MB in the beginning and 69.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,679 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:25:10,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.29 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 44.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 71.3 MB. Free memory was 44.3 MB in the beginning and 40.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,689 INFO L168 Benchmark]: Boogie Preprocessor took 45.42 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 38.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,689 INFO L168 Benchmark]: RCFGBuilder took 869.35 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 36.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,690 INFO L168 Benchmark]: BuchiAutomizer took 62521.88 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 36.3 MB in the beginning and 71.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,690 INFO L168 Benchmark]: Witness Printer took 88.83 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 69.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:25:10,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.29 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 44.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 71.3 MB. Free memory was 44.3 MB in the beginning and 40.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.42 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 38.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 869.35 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 36.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 62521.88 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 36.3 MB in the beginning and 71.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. * Witness Printer took 88.83 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 69.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 294 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 62.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 61.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 50.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 316 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 294 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 365 SDtfs, 1154 SDslu, 1360 SDs, 0 SdLazy, 121 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 168.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 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: 526]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24143} State at position 1 is {NULL=0, retValue_acc=0, NULL=0, NULL=24156, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58a8cb27=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f9ba222=0, NULL=24143, NULL=24163, NULL=0, NULL=24153, NULL=0, NULL=0, NULL=0, NULL=24147, NULL=24151, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18c998c3=52, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5feadf76=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2000223=0, NULL=24155, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3628c48a=0, NULL=24150, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@163de418=0, NULL=0, NULL=0, NULL=0, tmp___1=0, NULL=0, NULL=0, NULL=0, NULL=24161, NULL=24164, cleanupTimeShifts=4, NULL=24144, NULL=24165, tmp=0, tmp___0=1, NULL=0, systemActive=1, waterLevel=1, NULL=24162, \result=1, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d3bf207=0, NULL=0, NULL=24157, NULL=0, NULL=24149, NULL=24152, tmp___0=0, retValue_acc=0, NULL=24170, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=24167, \result=0, NULL=0, NULL=0, NULL=0, NULL=24158, NULL=24146, NULL=24169, NULL=24148, NULL=0, NULL=24171, NULL=0, NULL=24166, tmp___2=52, NULL=0, splverifierCounter=0, NULL=0, \result=0, NULL=24168, NULL=24154, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34775c37=0, tmp___1=0, head=0, tmp=0, tmp=1, NULL=0, NULL=0, NULL=24159, NULL=24160, NULL=0, NULL=24145, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3da3e32c=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L316] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int pumpRunning = 0; [L588] int systemActive = 1; [L870] int cleanupTimeShifts = 4; [L943] int retValue_acc ; [L944] int tmp ; [L861] int retValue_acc ; [L864] retValue_acc = 1 [L865] return (retValue_acc); [L950] tmp = valid_product() [L952] COND TRUE \read(tmp) [L517] int splverifierCounter ; [L518] int tmp ; [L519] int tmp___0 ; [L520] int tmp___1 ; [L521] int tmp___2 ; [L524] splverifierCounter = 0 Loop: [L526] COND TRUE 1 [L528] COND TRUE splverifierCounter < 4 [L534] tmp = __VERIFIER_nondet_int() [L536] COND FALSE !(\read(tmp)) [L544] tmp___0 = __VERIFIER_nondet_int() [L546] COND FALSE !(\read(tmp___0)) [L554] tmp___2 = __VERIFIER_nondet_int() [L556] COND TRUE \read(tmp___2) [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L624] int tmp ; [L627] COND FALSE !(\read(pumpRunning)) [L799] int tmp ; [L800] int tmp___0 ; [L801] int tmp___1 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L805] tmp = isMethaneLevelCritical() [L807] COND FALSE !(\read(tmp)) [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L811] tmp___0 = getWaterLevel() [L813] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:25:10,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...