./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_product62.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 b53c74b3fbc69a335e393da17bbcb1aa5d3461be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-11-28 21:07:47,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:07:47,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:07:47,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:07:47,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:07:47,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:07:47,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:07:47,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:07:47,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:07:47,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:07:47,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:07:47,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:07:47,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:07:47,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:07:47,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:07:47,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:07:47,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:07:47,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:07:47,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:07:47,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:07:47,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:07:47,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:07:47,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:07:47,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:07:47,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:07:47,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:07:47,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:07:47,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:07:47,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:07:47,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:07:47,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:07:47,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:07:47,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:07:47,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:07:47,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:07:47,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:07:47,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:07:47,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:07:47,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:07:47,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:07:47,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:07:47,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:07:47,174 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:07:47,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:07:47,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:07:47,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:07:47,177 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:07:47,177 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:07:47,177 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:07:47,177 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:07:47,178 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:07:47,178 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:07:47,179 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:07:47,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:07:47,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:07:47,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:07:47,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:07:47,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:07:47,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:07:47,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:07:47,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:07:47,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:07:47,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:07:47,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:07:47,183 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:07:47,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:07:47,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:07:47,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:07:47,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:07:47,184 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:07:47,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:07:47,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:07:47,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:07:47,186 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:07:47,188 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:07:47,188 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> b53c74b3fbc69a335e393da17bbcb1aa5d3461be [2019-11-28 21:07:47,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:07:47,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:07:47,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:07:47,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:07:47,522 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:07:47,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2019-11-28 21:07:47,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab6ab02f/260625a287fe4662a27ede8af53bee3e/FLAG1a2c5534e [2019-11-28 21:07:48,120 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:07:48,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2019-11-28 21:07:48,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab6ab02f/260625a287fe4662a27ede8af53bee3e/FLAG1a2c5534e [2019-11-28 21:07:48,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab6ab02f/260625a287fe4662a27ede8af53bee3e [2019-11-28 21:07:48,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:07:48,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:07:48,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:07:48,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:07:48,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:07:48,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:07:48" (1/1) ... [2019-11-28 21:07:48,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a736f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:48, skipping insertion in model container [2019-11-28 21:07:48,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:07:48" (1/1) ... [2019-11-28 21:07:48,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:07:48,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:07:48,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:07:48,864 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:07:48,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:07:49,014 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:07:49,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49 WrapperNode [2019-11-28 21:07:49,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:07:49,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:07:49,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:07:49,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:07:49,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:07:49,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:07:49,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:07:49,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:07:49,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... [2019-11-28 21:07:49,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:07:49,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:07:49,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:07:49,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:07:49,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:07:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 21:07:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 21:07:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:07:49,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:07:50,445 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:07:50,445 INFO L287 CfgBuilder]: Removed 356 assume(true) statements. [2019-11-28 21:07:50,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:07:50 BoogieIcfgContainer [2019-11-28 21:07:50,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:07:50,448 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:07:50,448 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:07:50,451 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:07:50,452 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:07:50,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:07:48" (1/3) ... [2019-11-28 21:07:50,453 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dfe297e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:07:50, skipping insertion in model container [2019-11-28 21:07:50,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:07:50,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:07:49" (2/3) ... [2019-11-28 21:07:50,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4dfe297e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:07:50, skipping insertion in model container [2019-11-28 21:07:50,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:07:50,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:07:50" (3/3) ... [2019-11-28 21:07:50,456 INFO L371 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2019-11-28 21:07:50,510 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:07:50,510 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:07:50,511 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:07:50,511 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:07:50,511 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:07:50,511 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:07:50,512 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:07:50,512 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:07:50,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states. [2019-11-28 21:07:50,614 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2019-11-28 21:07:50,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:07:50,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:07:50,626 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:07:50,627 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:07:50,627 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:07:50,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states. [2019-11-28 21:07:50,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2019-11-28 21:07:50,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:07:50,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:07:50,650 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:07:50,651 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:07:50,665 INFO L794 eck$LassoCheckResult]: Stem: 66#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(30);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(9);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(13);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string61.base, #t~string61.offset, 1);call write~init~int(80, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(117, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(109, #t~string61.base, 3 + #t~string61.offset, 1);call write~init~int(112, #t~string61.base, 4 + #t~string61.offset, 1);call write~init~int(58, #t~string61.base, 5 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 6 + #t~string61.offset, 1);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(3);call write~init~int(41, #t~string67.base, #t~string67.offset, 1);call write~init~int(32, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string69.base, #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 1 + #t~string69.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 12#L-1true havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 197#L586true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 92#L594true main_#t~ret76 := valid_product_#res;main_~tmp~11 := main_#t~ret76;havoc main_#t~ret76; 61#L1002true assume 0 != main_~tmp~11; 107#L979true havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 162#L67-1true [2019-11-28 21:07:50,666 INFO L796 eck$LassoCheckResult]: Loop: 162#L67-1true assume !false; 86#L864true assume test_~splverifierCounter~0 < 4; 166#L865true test_~tmp~10 := test_#t~nondet72;havoc test_#t~nondet72; 18#L873true assume !(0 != test_~tmp~10); 20#L873-1true test_~tmp___0~3 := test_#t~nondet73;havoc test_#t~nondet73; 199#L883true assume !(0 != test_~tmp___0~3); 202#L883-1true test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 150#L893true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 14#L901-2true assume !(0 != ~pumpRunning~0); 49#L611true assume !(0 != ~systemActive~0); 147#L618true havoc __utac_acc__Specification3_spec__1_#t~ret0, __utac_acc__Specification3_spec__1_#t~ret1, __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 43#L501-5true __utac_acc__Specification3_spec__1_#t~ret0 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret0;havoc __utac_acc__Specification3_spec__1_#t~ret0; 168#L61true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 162#L67-1true [2019-11-28 21:07:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:50,674 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2019-11-28 21:07:50,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:50,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396148431] [2019-11-28 21:07:50,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,141 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1674172490, now seen corresponding path program 1 times [2019-11-28 21:07:51,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652109257] [2019-11-28 21:07:51,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:07:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:07:51,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652109257] [2019-11-28 21:07:51,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:07:51,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 21:07:51,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252553488] [2019-11-28 21:07:51,203 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:07:51,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:07:51,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 21:07:51,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 21:07:51,224 INFO L87 Difference]: Start difference. First operand 228 states. Second operand 3 states. [2019-11-28 21:07:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:07:51,281 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2019-11-28 21:07:51,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 21:07:51,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 332 transitions. [2019-11-28 21:07:51,288 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-11-28 21:07:51,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2019-11-28 21:07:51,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2019-11-28 21:07:51,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2019-11-28 21:07:51,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2019-11-28 21:07:51,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:07:51,301 INFO L688 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 21:07:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2019-11-28 21:07:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2019-11-28 21:07:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-28 21:07:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2019-11-28 21:07:51,346 INFO L711 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 21:07:51,346 INFO L591 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 21:07:51,346 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:07:51,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2019-11-28 21:07:51,349 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-11-28 21:07:51,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:07:51,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:07:51,350 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:07:51,351 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:07:51,351 INFO L794 eck$LassoCheckResult]: Stem: 570#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(30);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(9);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(13);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string61.base, #t~string61.offset, 1);call write~init~int(80, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(117, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(109, #t~string61.base, 3 + #t~string61.offset, 1);call write~init~int(112, #t~string61.base, 4 + #t~string61.offset, 1);call write~init~int(58, #t~string61.base, 5 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 6 + #t~string61.offset, 1);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(3);call write~init~int(41, #t~string67.base, #t~string67.offset, 1);call write~init~int(32, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string69.base, #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 1 + #t~string69.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 482#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 483#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 607#L594 main_#t~ret76 := valid_product_#res;main_~tmp~11 := main_#t~ret76;havoc main_#t~ret76; 564#L1002 assume 0 != main_~tmp~11; 565#L979 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 598#L67-1 [2019-11-28 21:07:51,351 INFO L796 eck$LassoCheckResult]: Loop: 598#L67-1 assume !false; 599#L864 assume test_~splverifierCounter~0 < 4; 600#L865 test_~tmp~10 := test_#t~nondet72;havoc test_#t~nondet72; 491#L873 assume !(0 != test_~tmp~10); 493#L873-1 test_~tmp___0~3 := test_#t~nondet73;havoc test_#t~nondet73; 497#L883 assume !(0 != test_~tmp___0~3); 489#L883-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 668#L893 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 485#L901-2 assume !(0 != ~pumpRunning~0); 486#L611 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret51, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 547#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret50, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 659#L669-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret49, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 474#L643-3 assume !(0 == ~pumpRunning~0); 466#L618 havoc __utac_acc__Specification3_spec__1_#t~ret0, __utac_acc__Specification3_spec__1_#t~ret1, __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 536#L501-5 __utac_acc__Specification3_spec__1_#t~ret0 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret0;havoc __utac_acc__Specification3_spec__1_#t~ret0; 537#L61 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 598#L67-1 [2019-11-28 21:07:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2019-11-28 21:07:51,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662460592] [2019-11-28 21:07:51,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1243674316, now seen corresponding path program 1 times [2019-11-28 21:07:51,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589263157] [2019-11-28 21:07:51,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:07:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:07:51,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589263157] [2019-11-28 21:07:51,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:07:51,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 21:07:51,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184534952] [2019-11-28 21:07:51,524 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:07:51,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:07:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 21:07:51,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 21:07:51,526 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand 3 states. [2019-11-28 21:07:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:07:51,678 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2019-11-28 21:07:51,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 21:07:51,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2019-11-28 21:07:51,685 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2019-11-28 21:07:51,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2019-11-28 21:07:51,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2019-11-28 21:07:51,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2019-11-28 21:07:51,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2019-11-28 21:07:51,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:07:51,694 INFO L688 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 21:07:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2019-11-28 21:07:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2019-11-28 21:07:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2019-11-28 21:07:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2019-11-28 21:07:51,717 INFO L711 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 21:07:51,724 INFO L591 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 21:07:51,724 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 21:07:51,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2019-11-28 21:07:51,729 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2019-11-28 21:07:51,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:07:51,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:07:51,731 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:07:51,731 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:07:51,732 INFO L794 eck$LassoCheckResult]: Stem: 1067#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(30);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(9);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(13);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string61.base, #t~string61.offset, 1);call write~init~int(80, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(117, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(109, #t~string61.base, 3 + #t~string61.offset, 1);call write~init~int(112, #t~string61.base, 4 + #t~string61.offset, 1);call write~init~int(58, #t~string61.base, 5 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 6 + #t~string61.offset, 1);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(3);call write~init~int(41, #t~string67.base, #t~string67.offset, 1);call write~init~int(32, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string69.base, #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 1 + #t~string69.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 946#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 947#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1085#L594 main_#t~ret76 := valid_product_#res;main_~tmp~11 := main_#t~ret76;havoc main_#t~ret76; 1063#L1002 assume 0 != main_~tmp~11; 1064#L979 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1099#L67-1 [2019-11-28 21:07:51,732 INFO L796 eck$LassoCheckResult]: Loop: 1099#L67-1 assume !false; 1084#L864 assume test_~splverifierCounter~0 < 4; 1000#L865 test_~tmp~10 := test_#t~nondet72;havoc test_#t~nondet72; 1001#L873 assume !(0 != test_~tmp~10); 1004#L873-1 test_~tmp___0~3 := test_#t~nondet73;havoc test_#t~nondet73; 1009#L883 assume !(0 != test_~tmp___0~3); 991#L883-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 977#L893 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 978#L901-2 assume !(0 != ~pumpRunning~0); 983#L611 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret51, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 962#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret50, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 963#L669-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret49, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 934#L643-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret70, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 935#L541-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 959#L546-3 isHighWaterLevel_#t~ret70 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret70;havoc isHighWaterLevel_#t~ret70; 986#L814-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1081#L814-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1074#L820-3 processEnvironment__wrappee__highWaterSensor_#t~ret49 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret49;havoc processEnvironment__wrappee__highWaterSensor_#t~ret49; 1017#L647-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 920#L618 havoc __utac_acc__Specification3_spec__1_#t~ret0, __utac_acc__Specification3_spec__1_#t~ret1, __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1125#L501-5 __utac_acc__Specification3_spec__1_#t~ret0 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret0;havoc __utac_acc__Specification3_spec__1_#t~ret0; 1122#L61 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1099#L67-1 [2019-11-28 21:07:51,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,734 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2019-11-28 21:07:51,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442588362] [2019-11-28 21:07:51,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,863 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1113090816, now seen corresponding path program 1 times [2019-11-28 21:07:51,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048024969] [2019-11-28 21:07:51,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:51,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash 140214310, now seen corresponding path program 1 times [2019-11-28 21:07:51,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:51,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608430646] [2019-11-28 21:07:51,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:07:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:07:51,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608430646] [2019-11-28 21:07:51,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:07:51,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 21:07:51,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795869882] [2019-11-28 21:07:52,101 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-11-28 21:07:52,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:07:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 21:07:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 21:07:52,177 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand 5 states. [2019-11-28 21:07:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:07:52,598 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2019-11-28 21:07:52,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 21:07:52,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2019-11-28 21:07:52,609 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2019-11-28 21:07:52,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2019-11-28 21:07:52,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2019-11-28 21:07:52,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2019-11-28 21:07:52,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2019-11-28 21:07:52,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:07:52,626 INFO L688 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2019-11-28 21:07:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2019-11-28 21:07:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2019-11-28 21:07:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-11-28 21:07:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2019-11-28 21:07:52,658 INFO L711 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2019-11-28 21:07:52,658 INFO L591 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2019-11-28 21:07:52,658 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 21:07:52,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2019-11-28 21:07:52,662 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2019-11-28 21:07:52,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:07:52,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:07:52,665 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:07:52,665 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:07:52,665 INFO L794 eck$LassoCheckResult]: Stem: 2066#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(30);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(9);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(21);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(30);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(9);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(21);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(30);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(9);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(25);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(30);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(9);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(25);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(13);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string41.base, #t~string41.offset, 1);call write~init~int(77, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(101, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(116, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(104, #t~string41.base, 4 + #t~string41.offset, 1);call write~init~int(58, #t~string41.base, 5 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 6 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string43.base, #t~string43.offset, 1);call write~init~int(82, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(73, #t~string43.base, 2 + #t~string43.offset, 1);call write~init~int(84, #t~string43.base, 3 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 4 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string45.base, #t~string45.offset, 1);call write~init~int(75, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 2 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string47.base, #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 1 + #t~string47.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(13);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(110, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(102, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 3 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string61.base, #t~string61.offset, 1);call write~init~int(80, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(117, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(109, #t~string61.base, 3 + #t~string61.offset, 1);call write~init~int(112, #t~string61.base, 4 + #t~string61.offset, 1);call write~init~int(58, #t~string61.base, 5 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 6 + #t~string61.offset, 1);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(3);call write~init~int(41, #t~string67.base, #t~string67.offset, 1);call write~init~int(32, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string69.base, #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 1 + #t~string69.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1934#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1935#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2086#L594 main_#t~ret76 := valid_product_#res;main_~tmp~11 := main_#t~ret76;havoc main_#t~ret76; 2062#L1002 assume 0 != main_~tmp~11; 2063#L979 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1984#L67-1 [2019-11-28 21:07:52,666 INFO L796 eck$LassoCheckResult]: Loop: 1984#L67-1 assume !false; 1985#L864 assume test_~splverifierCounter~0 < 4; 2085#L865 test_~tmp~10 := test_#t~nondet72;havoc test_#t~nondet72; 2342#L873 assume !(0 != test_~tmp~10); 2340#L873-1 test_~tmp___0~3 := test_#t~nondet73;havoc test_#t~nondet73; 2092#L883 assume !(0 != test_~tmp___0~3); 2093#L883-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 1966#L893 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1967#L901-2 assume !(0 != ~pumpRunning~0); 1972#L611 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret51, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1951#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret50, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1952#L669-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret49, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2327#L643-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret70, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1947#L541-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1948#L546-3 isHighWaterLevel_#t~ret70 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret70;havoc isHighWaterLevel_#t~ret70; 1975#L814-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2081#L814-11 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 2074#L820-3 processEnvironment__wrappee__highWaterSensor_#t~ret49 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret49;havoc processEnvironment__wrappee__highWaterSensor_#t~ret49; 2009#L647-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1908#L618 havoc __utac_acc__Specification3_spec__1_#t~ret0, __utac_acc__Specification3_spec__1_#t~ret1, __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1962#L501-5 __utac_acc__Specification3_spec__1_#t~ret0 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret0;havoc __utac_acc__Specification3_spec__1_#t~ret0; 1993#L61 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1994#L533 __utac_acc__Specification3_spec__1_#t~ret1 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret1;havoc __utac_acc__Specification3_spec__1_#t~ret1; 1986#L67 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1984#L67-1 [2019-11-28 21:07:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2019-11-28 21:07:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:52,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955179558] [2019-11-28 21:07:52,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -233404718, now seen corresponding path program 1 times [2019-11-28 21:07:52,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:52,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023810050] [2019-11-28 21:07:52,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:07:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1601978488, now seen corresponding path program 1 times [2019-11-28 21:07:52,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:07:52,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63708269] [2019-11-28 21:07:52,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:07:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:07:52,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:07:53,061 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-11-28 21:08:15,672 WARN L192 SmtUtils]: Spent 22.54 s on a formula simplification. DAG size of input: 452 DAG size of output: 400 [2019-11-28 21:08:28,793 WARN L192 SmtUtils]: Spent 13.12 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-28 21:08:28,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:08:28 BoogieIcfgContainer [2019-11-28 21:08:28,867 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:08:28,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:08:28,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:08:28,868 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:08:28,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:07:50" (3/4) ... [2019-11-28 21:08:28,871 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 21:08:28,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 21:08:28,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:08:28,935 INFO L168 Benchmark]: Toolchain (without parser) took 40512.26 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 274.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -122.0 MB). Peak memory consumption was 152.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,935 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:08:28,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -115.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,937 INFO L168 Benchmark]: Boogie Preprocessor took 111.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,938 INFO L168 Benchmark]: RCFGBuilder took 1222.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 963.8 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,939 INFO L168 Benchmark]: BuchiAutomizer took 38419.16 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 963.8 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). Peak memory consumption was 374.5 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,939 INFO L168 Benchmark]: Witness Printer took 65.76 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-28 21:08:28,942 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 591.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -115.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 111.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1222.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 963.8 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 38419.16 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 963.8 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). Peak memory consumption was 374.5 MB. Max. memory is 11.5 GB. * Witness Printer took 65.76 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 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 5 locations. The remainder module has 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 38.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 37.3s. Construction of modules took 0.3s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 917 SDtfs, 1517 SDslu, 1203 SDs, 0 SdLazy, 204 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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: 863]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3897} State at position 1 is {NULL=0, NULL=3907, NULL=0, NULL=3897, NULL=0, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48ecc095=0, NULL=3902, NULL=0, tmp___1=0, NULL=3903, NULL=3916, tmp=0, cleanupTimeShifts=4, NULL=3919, tmp=1, NULL=0, waterLevel=1, NULL=0, \result=1, head=0, pumpRunning=0, NULL=3908, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=3910, retValue_acc=0, tmp___0=0, tmp=1, retValue_acc=1, NULL=3904, NULL=3918, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ec3dbe1=0, NULL=3911, head=0, NULL=0, NULL=3922, tmp=0, NULL=3898, NULL=0, NULL=0, NULL=3899, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1438a2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b4cd7ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ce09264=0, NULL=0, NULL=0, NULL=3920, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61001bd=0, tmp___0=0, NULL=0, NULL=0, NULL=3917, tmp___0=1, tmp=0, NULL=3912, NULL=3915, NULL=3914, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=3901, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=3909, NULL=0, NULL=0, retValue_acc=0, \result=0, NULL=3913, NULL=3900, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d8014c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@108387d3=63, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@598956c3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4292c378=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7da67701=0, NULL=3905, NULL=3921, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@319f7c15=0, tmp=0, tmp___2=63, splverifierCounter=0, NULL=0, \result=0, tmp___1=0, NULL=0, NULL=0, NULL=3906} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L255] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L458] int waterLevel = 1; [L459] int methaneLevelCritical = 0; [L604] int pumpRunning = 0; [L605] int systemActive = 1; [L920] int cleanupTimeShifts = 4; [L993] int retValue_acc ; [L994] int tmp ; [L590] int retValue_acc ; [L593] retValue_acc = 1 [L594] return (retValue_acc); [L1000] tmp = valid_product() [L1002] COND TRUE \read(tmp) [L854] int splverifierCounter ; [L855] int tmp ; [L856] int tmp___0 ; [L857] int tmp___1 ; [L858] int tmp___2 ; [L861] splverifierCounter = 0 Loop: [L863] COND TRUE 1 [L865] COND TRUE splverifierCounter < 4 [L871] tmp = __VERIFIER_nondet_int() [L873] COND FALSE !(\read(tmp)) [L881] tmp___0 = __VERIFIER_nondet_int() [L883] COND FALSE !(\read(tmp___0)) [L891] tmp___2 = __VERIFIER_nondet_int() [L893] COND TRUE \read(tmp___2) [L847] systemActive = 1 [L611] COND FALSE !(\read(pumpRunning)) [L618] COND TRUE \read(systemActive) [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L666] int tmp ; [L669] COND FALSE !(\read(pumpRunning)) [L640] int tmp ; [L643] COND TRUE ! pumpRunning [L806] int retValue_acc ; [L807] int tmp ; [L808] int tmp___0 ; [L538] int retValue_acc ; [L541] COND TRUE waterLevel < 2 [L542] retValue_acc = 1 [L543] return (retValue_acc); [L812] tmp = isHighWaterSensorDry() [L814] COND TRUE \read(tmp) [L815] tmp___0 = 0 [L819] retValue_acc = tmp___0 [L820] return (retValue_acc); [L645] tmp = isHighWaterLevel() [L647] COND FALSE !(\read(tmp)) [L53] int tmp ; [L54] int tmp___0 ; [L55] int tmp___1 ; [L497] int retValue_acc ; [L500] retValue_acc = methaneLevelCritical [L501] return (retValue_acc); [L59] tmp = isMethaneLevelCritical() [L61] COND FALSE !(\read(tmp)) [L529] int retValue_acc ; [L532] retValue_acc = waterLevel [L533] return (retValue_acc); [L65] tmp___0 = getWaterLevel() [L67] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...