./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_product40.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 6b0dd49774129de8b6944c8beb9911dd98f5e936 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-8bd4bc6 [2020-07-29 02:44:44,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:44:44,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:44:44,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:44:44,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:44:44,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:44:44,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:44:44,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:44:44,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:44:44,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:44:44,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:44:44,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:44:44,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:44:44,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:44:44,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:44:44,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:44:44,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:44:44,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:44:44,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:44:44,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:44:44,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:44:44,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:44:44,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:44:44,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:44:44,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:44:44,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:44:44,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:44:44,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:44:44,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:44:44,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:44:44,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:44:44,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:44:44,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:44:44,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:44:44,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:44:44,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:44:44,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:44:44,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:44:44,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:44:44,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:44:44,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:44:44,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:44:44,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:44:44,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:44:44,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:44:44,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:44:44,576 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:44:44,576 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:44:44,577 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:44:44,577 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:44:44,577 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:44:44,577 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:44:44,578 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:44:44,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:44:44,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:44:44,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:44:44,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:44:44,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:44:44,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:44:44,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:44:44,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:44:44,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:44:44,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:44:44,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:44:44,581 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:44:44,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:44:44,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:44:44,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:44:44,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:44:44,582 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:44:44,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:44:44,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:44:44,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:44:44,584 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:44:44,585 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:44:44,585 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 -> 6b0dd49774129de8b6944c8beb9911dd98f5e936 [2020-07-29 02:44:44,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:44:44,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:44:44,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:44:44,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:44:44,937 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:44:44,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-07-29 02:44:45,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf28e497/40c3739c5d1f4937aba26b10d6bdf180/FLAGfbeb34252 [2020-07-29 02:44:45,485 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:44:45,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-07-29 02:44:45,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf28e497/40c3739c5d1f4937aba26b10d6bdf180/FLAGfbeb34252 [2020-07-29 02:44:45,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faf28e497/40c3739c5d1f4937aba26b10d6bdf180 [2020-07-29 02:44:45,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:44:45,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:44:45,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:44:45,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:44:45,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:44:45,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:44:45" (1/1) ... [2020-07-29 02:44:45,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e36648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:45, skipping insertion in model container [2020-07-29 02:44:45,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:44:45" (1/1) ... [2020-07-29 02:44:45,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:44:45,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:44:46,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:44:46,396 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:44:46,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:44:46,525 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:44:46,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46 WrapperNode [2020-07-29 02:44:46,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:44:46,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:44:46,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:44:46,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:44:46,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:44:46,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:44:46,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:44:46,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:44:46,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (1/1) ... [2020-07-29 02:44:46,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:44:46,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:44:46,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:44:46,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:44:46,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (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 [2020-07-29 02:44:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 02:44:46,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-29 02:44:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:44:46,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:44:48,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:44:48,198 INFO L295 CfgBuilder]: Removed 168 assume(true) statements. [2020-07-29 02:44:48,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:44:48 BoogieIcfgContainer [2020-07-29 02:44:48,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:44:48,205 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:44:48,205 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:44:48,209 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:44:48,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:44:48,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:44:45" (1/3) ... [2020-07-29 02:44:48,211 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f3eae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:44:48, skipping insertion in model container [2020-07-29 02:44:48,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:44:48,212 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:44:46" (2/3) ... [2020-07-29 02:44:48,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f3eae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:44:48, skipping insertion in model container [2020-07-29 02:44:48,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:44:48,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:44:48" (3/3) ... [2020-07-29 02:44:48,214 INFO L371 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-07-29 02:44:48,268 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:44:48,268 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:44:48,269 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:44:48,269 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:44:48,269 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:44:48,270 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:44:48,270 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:44:48,270 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:44:48,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states. [2020-07-29 02:44:48,339 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2020-07-29 02:44:48,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:44:48,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:44:48,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-29 02:44:48,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:44:48,348 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:44:48,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states. [2020-07-29 02:44:48,364 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2020-07-29 02:44:48,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:44:48,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:44:48,365 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-29 02:44:48,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:44:48,372 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(13);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string8.base, #t~string8.offset, 1);call write~init~int(77, #t~string8.base, 1 + #t~string8.offset, 1);call write~init~int(101, #t~string8.base, 2 + #t~string8.offset, 1);call write~init~int(116, #t~string8.base, 3 + #t~string8.offset, 1);call write~init~int(104, #t~string8.base, 4 + #t~string8.offset, 1);call write~init~int(58, #t~string8.base, 5 + #t~string8.offset, 1);call write~init~int(0, #t~string8.base, 6 + #t~string8.offset, 1);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string10.base, #t~string10.offset, 1);call write~init~int(82, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(73, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(84, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 4 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string12.base, #t~string12.offset, 1);call write~init~int(75, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 2 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string14.base, #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 1 + #t~string14.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 8#L-1true havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 45#L166true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 69#L174true main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 67#L130true assume 0 != main_~tmp~0; 21#L103true havoc test_#t~nondet35, test_#t~nondet36, test_#t~nondet37, test_#t~nondet38, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 77#L198-1true [2020-07-29 02:44:48,374 INFO L796 eck$LassoCheckResult]: Loop: 77#L198-1true assume !false; 103#L539true assume test_~splverifierCounter~0 < 4; 65#L540true test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; 71#L548true assume !(0 != test_~tmp~5); 72#L548-1true test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; 105#L558true assume !(0 != test_~tmp___0~2); 106#L558-1true test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; 42#L568true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 61#L576-1true assume !(0 != ~pumpRunning~0); 41#L334true assume !(0 != ~systemActive~0); 98#L341true havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; 92#L272-1true __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; 108#L192true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 77#L198-1true [2020-07-29 02:44:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:48,380 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-07-29 02:44:48,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:48,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876893248] [2020-07-29 02:44:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:48,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:48,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:48,769 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:48,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1670447617, now seen corresponding path program 1 times [2020-07-29 02:44:48,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:48,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671958236] [2020-07-29 02:44:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:44:48,851 INFO L280 TraceCheckUtils]: 0: Hoare triple {122#true} assume !false; {122#true} is VALID [2020-07-29 02:44:48,851 INFO L280 TraceCheckUtils]: 1: Hoare triple {122#true} assume test_~splverifierCounter~0 < 4; {122#true} is VALID [2020-07-29 02:44:48,852 INFO L280 TraceCheckUtils]: 2: Hoare triple {122#true} test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; {122#true} is VALID [2020-07-29 02:44:48,852 INFO L280 TraceCheckUtils]: 3: Hoare triple {122#true} assume !(0 != test_~tmp~5); {122#true} is VALID [2020-07-29 02:44:48,852 INFO L280 TraceCheckUtils]: 4: Hoare triple {122#true} test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; {122#true} is VALID [2020-07-29 02:44:48,853 INFO L280 TraceCheckUtils]: 5: Hoare triple {122#true} assume !(0 != test_~tmp___0~2); {122#true} is VALID [2020-07-29 02:44:48,853 INFO L280 TraceCheckUtils]: 6: Hoare triple {122#true} test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; {122#true} is VALID [2020-07-29 02:44:48,855 INFO L280 TraceCheckUtils]: 7: Hoare triple {122#true} assume 0 != test_~tmp___2~0;~systemActive~0 := 1; {124#(<= 1 ~systemActive~0)} is VALID [2020-07-29 02:44:48,856 INFO L280 TraceCheckUtils]: 8: Hoare triple {124#(<= 1 ~systemActive~0)} assume !(0 != ~pumpRunning~0); {124#(<= 1 ~systemActive~0)} is VALID [2020-07-29 02:44:48,857 INFO L280 TraceCheckUtils]: 9: Hoare triple {124#(<= 1 ~systemActive~0)} assume !(0 != ~systemActive~0); {123#false} is VALID [2020-07-29 02:44:48,858 INFO L280 TraceCheckUtils]: 10: Hoare triple {123#false} havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; {123#false} is VALID [2020-07-29 02:44:48,858 INFO L280 TraceCheckUtils]: 11: Hoare triple {123#false} __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; {123#false} is VALID [2020-07-29 02:44:48,858 INFO L280 TraceCheckUtils]: 12: Hoare triple {123#false} assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; {123#false} is VALID [2020-07-29 02:44:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:44:48,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671958236] [2020-07-29 02:44:48,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:44:48,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:44:48,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16881842] [2020-07-29 02:44:48,871 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-29 02:44:48,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:44:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:44:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:44:48,892 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-07-29 02:44:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:49,394 INFO L93 Difference]: Finished difference Result 226 states and 330 transitions. [2020-07-29 02:44:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 02:44:49,396 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:44:49,419 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:44:49,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 330 transitions. [2020-07-29 02:44:49,440 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2020-07-29 02:44:49,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 212 states and 315 transitions. [2020-07-29 02:44:49,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2020-07-29 02:44:49,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2020-07-29 02:44:49,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 315 transitions. [2020-07-29 02:44:49,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:44:49,462 INFO L688 BuchiCegarLoop]: Abstraction has 212 states and 315 transitions. [2020-07-29 02:44:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 315 transitions. [2020-07-29 02:44:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-07-29 02:44:49,509 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:44:49,510 INFO L82 GeneralOperation]: Start isEquivalent. First operand 212 states and 315 transitions. Second operand 210 states. [2020-07-29 02:44:49,510 INFO L74 IsIncluded]: Start isIncluded. First operand 212 states and 315 transitions. Second operand 210 states. [2020-07-29 02:44:49,512 INFO L87 Difference]: Start difference. First operand 212 states and 315 transitions. Second operand 210 states. [2020-07-29 02:44:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:49,525 INFO L93 Difference]: Finished difference Result 212 states and 315 transitions. [2020-07-29 02:44:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 315 transitions. [2020-07-29 02:44:49,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:49,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:49,530 INFO L74 IsIncluded]: Start isIncluded. First operand 210 states. Second operand 212 states and 315 transitions. [2020-07-29 02:44:49,530 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 212 states and 315 transitions. [2020-07-29 02:44:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:49,542 INFO L93 Difference]: Finished difference Result 212 states and 315 transitions. [2020-07-29 02:44:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 315 transitions. [2020-07-29 02:44:49,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:49,545 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:49,545 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:44:49,545 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:44:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-07-29 02:44:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 312 transitions. [2020-07-29 02:44:49,558 INFO L711 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2020-07-29 02:44:49,558 INFO L591 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2020-07-29 02:44:49,558 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:44:49,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 210 states and 312 transitions. [2020-07-29 02:44:49,562 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 144 [2020-07-29 02:44:49,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:44:49,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:44:49,563 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-29 02:44:49,563 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:44:49,563 INFO L794 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(13);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string8.base, #t~string8.offset, 1);call write~init~int(77, #t~string8.base, 1 + #t~string8.offset, 1);call write~init~int(101, #t~string8.base, 2 + #t~string8.offset, 1);call write~init~int(116, #t~string8.base, 3 + #t~string8.offset, 1);call write~init~int(104, #t~string8.base, 4 + #t~string8.offset, 1);call write~init~int(58, #t~string8.base, 5 + #t~string8.offset, 1);call write~init~int(0, #t~string8.base, 6 + #t~string8.offset, 1);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string10.base, #t~string10.offset, 1);call write~init~int(82, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(73, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(84, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 4 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string12.base, #t~string12.offset, 1);call write~init~int(75, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 2 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string14.base, #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 1 + #t~string14.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 360#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 361#L166 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 427#L174 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 442#L130 assume 0 != main_~tmp~0; 383#L103 havoc test_#t~nondet35, test_#t~nondet36, test_#t~nondet37, test_#t~nondet38, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 384#L198-1 [2020-07-29 02:44:49,564 INFO L796 eck$LassoCheckResult]: Loop: 384#L198-1 assume !false; 471#L539 assume test_~splverifierCounter~0 < 4; 440#L540 test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; 441#L548 assume !(0 != test_~tmp~5); 444#L548-1 test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; 445#L558 assume !(0 != test_~tmp___0~2); 474#L558-1 test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; 422#L568 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 423#L576-1 assume !(0 != ~pumpRunning~0); 420#L334 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 421#L392 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret15, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 498#L366-1 assume !(0 == ~pumpRunning~0); 470#L341 havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; 465#L272-1 __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; 466#L192 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 384#L198-1 [2020-07-29 02:44:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:49,565 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-07-29 02:44:49,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:49,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337932287] [2020-07-29 02:44:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:49,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:49,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:49,702 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:49,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1422660394, now seen corresponding path program 1 times [2020-07-29 02:44:49,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:49,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794643352] [2020-07-29 02:44:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:44:49,729 INFO L280 TraceCheckUtils]: 0: Hoare triple {990#true} assume !false; {990#true} is VALID [2020-07-29 02:44:49,730 INFO L280 TraceCheckUtils]: 1: Hoare triple {990#true} assume test_~splverifierCounter~0 < 4; {990#true} is VALID [2020-07-29 02:44:49,730 INFO L280 TraceCheckUtils]: 2: Hoare triple {990#true} test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; {990#true} is VALID [2020-07-29 02:44:49,730 INFO L280 TraceCheckUtils]: 3: Hoare triple {990#true} assume !(0 != test_~tmp~5); {990#true} is VALID [2020-07-29 02:44:49,731 INFO L280 TraceCheckUtils]: 4: Hoare triple {990#true} test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; {990#true} is VALID [2020-07-29 02:44:49,731 INFO L280 TraceCheckUtils]: 5: Hoare triple {990#true} assume !(0 != test_~tmp___0~2); {990#true} is VALID [2020-07-29 02:44:49,731 INFO L280 TraceCheckUtils]: 6: Hoare triple {990#true} test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; {990#true} is VALID [2020-07-29 02:44:49,732 INFO L280 TraceCheckUtils]: 7: Hoare triple {990#true} assume 0 != test_~tmp___2~0;~systemActive~0 := 1; {990#true} is VALID [2020-07-29 02:44:49,733 INFO L280 TraceCheckUtils]: 8: Hoare triple {990#true} assume !(0 != ~pumpRunning~0); {992#(= 0 ~pumpRunning~0)} is VALID [2020-07-29 02:44:49,733 INFO L280 TraceCheckUtils]: 9: Hoare triple {992#(= 0 ~pumpRunning~0)} assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; {992#(= 0 ~pumpRunning~0)} is VALID [2020-07-29 02:44:49,734 INFO L280 TraceCheckUtils]: 10: Hoare triple {992#(= 0 ~pumpRunning~0)} assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret15, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; {992#(= 0 ~pumpRunning~0)} is VALID [2020-07-29 02:44:49,735 INFO L280 TraceCheckUtils]: 11: Hoare triple {992#(= 0 ~pumpRunning~0)} assume !(0 == ~pumpRunning~0); {991#false} is VALID [2020-07-29 02:44:49,735 INFO L280 TraceCheckUtils]: 12: Hoare triple {991#false} havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; {991#false} is VALID [2020-07-29 02:44:49,736 INFO L280 TraceCheckUtils]: 13: Hoare triple {991#false} __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; {991#false} is VALID [2020-07-29 02:44:49,736 INFO L280 TraceCheckUtils]: 14: Hoare triple {991#false} assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; {991#false} is VALID [2020-07-29 02:44:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:44:49,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794643352] [2020-07-29 02:44:49,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:44:49,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:44:49,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839721481] [2020-07-29 02:44:49,739 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-29 02:44:49,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:44:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:44:49,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:44:49,740 INFO L87 Difference]: Start difference. First operand 210 states and 312 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-07-29 02:44:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:50,189 INFO L93 Difference]: Finished difference Result 305 states and 430 transitions. [2020-07-29 02:44:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 02:44:50,190 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:44:50,213 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:44:50,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,228 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 215 [2020-07-29 02:44:50,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 305 states to 305 states and 430 transitions. [2020-07-29 02:44:50,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 305 [2020-07-29 02:44:50,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2020-07-29 02:44:50,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:44:50,245 INFO L688 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2020-07-29 02:44:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2020-07-29 02:44:50,262 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:44:50,263 INFO L82 GeneralOperation]: Start isEquivalent. First operand 305 states and 430 transitions. Second operand 305 states. [2020-07-29 02:44:50,263 INFO L74 IsIncluded]: Start isIncluded. First operand 305 states and 430 transitions. Second operand 305 states. [2020-07-29 02:44:50,263 INFO L87 Difference]: Start difference. First operand 305 states and 430 transitions. Second operand 305 states. [2020-07-29 02:44:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:50,276 INFO L93 Difference]: Finished difference Result 305 states and 430 transitions. [2020-07-29 02:44:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:50,278 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:50,278 INFO L74 IsIncluded]: Start isIncluded. First operand 305 states. Second operand 305 states and 430 transitions. [2020-07-29 02:44:50,278 INFO L87 Difference]: Start difference. First operand 305 states. Second operand 305 states and 430 transitions. [2020-07-29 02:44:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:50,291 INFO L93 Difference]: Finished difference Result 305 states and 430 transitions. [2020-07-29 02:44:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:50,292 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:50,293 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:44:50,293 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:44:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-07-29 02:44:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 430 transitions. [2020-07-29 02:44:50,305 INFO L711 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2020-07-29 02:44:50,305 INFO L591 BuchiCegarLoop]: Abstraction has 305 states and 430 transitions. [2020-07-29 02:44:50,305 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-29 02:44:50,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 305 states and 430 transitions. [2020-07-29 02:44:50,308 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 215 [2020-07-29 02:44:50,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:44:50,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:44:50,309 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-29 02:44:50,309 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] [2020-07-29 02:44:50,310 INFO L794 eck$LassoCheckResult]: Stem: 1413#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(13);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string8.base, #t~string8.offset, 1);call write~init~int(77, #t~string8.base, 1 + #t~string8.offset, 1);call write~init~int(101, #t~string8.base, 2 + #t~string8.offset, 1);call write~init~int(116, #t~string8.base, 3 + #t~string8.offset, 1);call write~init~int(104, #t~string8.base, 4 + #t~string8.offset, 1);call write~init~int(58, #t~string8.base, 5 + #t~string8.offset, 1);call write~init~int(0, #t~string8.base, 6 + #t~string8.offset, 1);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string10.base, #t~string10.offset, 1);call write~init~int(82, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(73, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(84, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 4 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string12.base, #t~string12.offset, 1);call write~init~int(75, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 2 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string14.base, #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 1 + #t~string14.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1307#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1308#L166 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1376#L174 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 1397#L130 assume 0 != main_~tmp~0; 1333#L103 havoc test_#t~nondet35, test_#t~nondet36, test_#t~nondet37, test_#t~nondet38, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1334#L198-1 [2020-07-29 02:44:50,310 INFO L796 eck$LassoCheckResult]: Loop: 1334#L198-1 assume !false; 1482#L539 assume test_~splverifierCounter~0 < 4; 1480#L540 test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; 1479#L548 assume !(0 != test_~tmp~5); 1476#L548-1 test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; 1475#L558 assume !(0 != test_~tmp___0~2); 1432#L558-1 test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; 1370#L568 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1371#L576-1 assume !(0 != ~pumpRunning~0); 1392#L334 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1513#L392 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret15, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1508#L366-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret34, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1511#L312-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1509#L317-1 isHighWaterLevel_#t~ret34 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret34;havoc isHighWaterLevel_#t~ret34; 1506#L494-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1504#L494-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1502#L500-1 processEnvironment__wrappee__highWaterSensor_#t~ret15 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret15;havoc processEnvironment__wrappee__highWaterSensor_#t~ret15; 1498#L370-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1497#L341 havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; 1465#L272-1 __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; 1466#L192 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 1334#L198-1 [2020-07-29 02:44:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-07-29 02:44:50,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:50,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384685785] [2020-07-29 02:44:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:50,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:50,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:50,405 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:50,406 INFO L82 PathProgramCache]: Analyzing trace with hash 287627938, now seen corresponding path program 1 times [2020-07-29 02:44:50,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:50,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373342869] [2020-07-29 02:44:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:50,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:50,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:50,421 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:50,422 INFO L82 PathProgramCache]: Analyzing trace with hash 743699132, now seen corresponding path program 1 times [2020-07-29 02:44:50,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:50,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588101833] [2020-07-29 02:44:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:44:50,536 INFO L280 TraceCheckUtils]: 0: Hoare triple {2220#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(13);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string8.base, #t~string8.offset, 1);call write~init~int(77, #t~string8.base, 1 + #t~string8.offset, 1);call write~init~int(101, #t~string8.base, 2 + #t~string8.offset, 1);call write~init~int(116, #t~string8.base, 3 + #t~string8.offset, 1);call write~init~int(104, #t~string8.base, 4 + #t~string8.offset, 1);call write~init~int(58, #t~string8.base, 5 + #t~string8.offset, 1);call write~init~int(0, #t~string8.base, 6 + #t~string8.offset, 1);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string10.base, #t~string10.offset, 1);call write~init~int(82, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(73, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(84, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 4 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string12.base, #t~string12.offset, 1);call write~init~int(75, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 2 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string14.base, #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 1 + #t~string14.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,537 INFO L280 TraceCheckUtils]: 1: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,538 INFO L280 TraceCheckUtils]: 2: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,538 INFO L280 TraceCheckUtils]: 3: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,539 INFO L280 TraceCheckUtils]: 4: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume 0 != main_~tmp~0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,540 INFO L280 TraceCheckUtils]: 5: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} havoc test_#t~nondet35, test_#t~nondet36, test_#t~nondet37, test_#t~nondet38, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,541 INFO L280 TraceCheckUtils]: 6: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !false; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,542 INFO L280 TraceCheckUtils]: 7: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume test_~splverifierCounter~0 < 4; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,545 INFO L280 TraceCheckUtils]: 8: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,546 INFO L280 TraceCheckUtils]: 9: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !(0 != test_~tmp~5); {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,547 INFO L280 TraceCheckUtils]: 10: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,547 INFO L280 TraceCheckUtils]: 11: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !(0 != test_~tmp___0~2); {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,548 INFO L280 TraceCheckUtils]: 12: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,549 INFO L280 TraceCheckUtils]: 13: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume 0 != test_~tmp___2~0;~systemActive~0 := 1; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,549 INFO L280 TraceCheckUtils]: 14: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !(0 != ~pumpRunning~0); {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,550 INFO L280 TraceCheckUtils]: 15: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,551 INFO L280 TraceCheckUtils]: 16: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret15, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,551 INFO L280 TraceCheckUtils]: 17: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret34, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,552 INFO L280 TraceCheckUtils]: 18: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,553 INFO L280 TraceCheckUtils]: 19: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} isHighWaterLevel_#t~ret34 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret34;havoc isHighWaterLevel_#t~ret34; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,555 INFO L280 TraceCheckUtils]: 20: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,556 INFO L280 TraceCheckUtils]: 21: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,557 INFO L280 TraceCheckUtils]: 22: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} processEnvironment__wrappee__highWaterSensor_#t~ret15 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret15;havoc processEnvironment__wrappee__highWaterSensor_#t~ret15; {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,557 INFO L280 TraceCheckUtils]: 23: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); {2222#(= 0 ~methaneLevelCritical~0)} is VALID [2020-07-29 02:44:50,561 INFO L280 TraceCheckUtils]: 24: Hoare triple {2222#(= 0 ~methaneLevelCritical~0)} havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; {2223#(= 0 |ULTIMATE.start_isMethaneLevelCritical_#res|)} is VALID [2020-07-29 02:44:50,562 INFO L280 TraceCheckUtils]: 25: Hoare triple {2223#(= 0 |ULTIMATE.start_isMethaneLevelCritical_#res|)} __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; {2224#(= 0 ULTIMATE.start___utac_acc__Specification3_spec__1_~tmp~1)} is VALID [2020-07-29 02:44:50,563 INFO L280 TraceCheckUtils]: 26: Hoare triple {2224#(= 0 ULTIMATE.start___utac_acc__Specification3_spec__1_~tmp~1)} assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; {2221#false} is VALID [2020-07-29 02:44:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:44:50,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588101833] [2020-07-29 02:44:50,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:44:50,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:44:50,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017300484] [2020-07-29 02:44:50,686 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-07-29 02:44:50,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:44:50,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 02:44:50,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 02:44:50,760 INFO L87 Difference]: Start difference. First operand 305 states and 430 transitions. cyclomatic complexity: 128 Second operand 5 states. [2020-07-29 02:44:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:52,105 INFO L93 Difference]: Finished difference Result 1017 states and 1438 transitions. [2020-07-29 02:44:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-29 02:44:52,106 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 02:44:52,148 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:44:52,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,253 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 762 [2020-07-29 02:44:52,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1017 states to 1017 states and 1438 transitions. [2020-07-29 02:44:52,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1017 [2020-07-29 02:44:52,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1017 [2020-07-29 02:44:52,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:44:52,312 INFO L688 BuchiCegarLoop]: Abstraction has 1017 states and 1438 transitions. [2020-07-29 02:44:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 604. [2020-07-29 02:44:52,340 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:44:52,340 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1017 states and 1438 transitions. Second operand 604 states. [2020-07-29 02:44:52,340 INFO L74 IsIncluded]: Start isIncluded. First operand 1017 states and 1438 transitions. Second operand 604 states. [2020-07-29 02:44:52,341 INFO L87 Difference]: Start difference. First operand 1017 states and 1438 transitions. Second operand 604 states. [2020-07-29 02:44:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:52,395 INFO L93 Difference]: Finished difference Result 1017 states and 1438 transitions. [2020-07-29 02:44:52,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:52,398 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:52,398 INFO L74 IsIncluded]: Start isIncluded. First operand 604 states. Second operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,398 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:44:52,466 INFO L93 Difference]: Finished difference Result 1017 states and 1438 transitions. [2020-07-29 02:44:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1438 transitions. [2020-07-29 02:44:52,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:44:52,469 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:44:52,470 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:44:52,470 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:44:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-07-29 02:44:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 838 transitions. [2020-07-29 02:44:52,494 INFO L711 BuchiCegarLoop]: Abstraction has 604 states and 838 transitions. [2020-07-29 02:44:52,494 INFO L591 BuchiCegarLoop]: Abstraction has 604 states and 838 transitions. [2020-07-29 02:44:52,494 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-29 02:44:52,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 604 states and 838 transitions. [2020-07-29 02:44:52,498 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 430 [2020-07-29 02:44:52,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:44:52,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:44:52,499 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-29 02:44:52,499 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] [2020-07-29 02:44:52,499 INFO L794 eck$LassoCheckResult]: Stem: 3364#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(13);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string8.base, #t~string8.offset, 1);call write~init~int(77, #t~string8.base, 1 + #t~string8.offset, 1);call write~init~int(101, #t~string8.base, 2 + #t~string8.offset, 1);call write~init~int(116, #t~string8.base, 3 + #t~string8.offset, 1);call write~init~int(104, #t~string8.base, 4 + #t~string8.offset, 1);call write~init~int(58, #t~string8.base, 5 + #t~string8.offset, 1);call write~init~int(0, #t~string8.base, 6 + #t~string8.offset, 1);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string10.base, #t~string10.offset, 1);call write~init~int(82, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(73, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(84, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 4 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string12.base, #t~string12.offset, 1);call write~init~int(75, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 2 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string14.base, #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 1 + #t~string14.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(13);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string25.base, #t~string25.offset, 1);call write~init~int(80, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(117, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(109, #t~string25.base, 3 + #t~string25.offset, 1);call write~init~int(112, #t~string25.base, 4 + #t~string25.offset, 1);call write~init~int(58, #t~string25.base, 5 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 6 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string31.base, #t~string31.offset, 1);call write~init~int(32, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string33.base, #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 1 + #t~string33.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 3259#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 3260#L166 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 3325#L174 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 3346#L130 assume 0 != main_~tmp~0; 3283#L103 havoc test_#t~nondet35, test_#t~nondet36, test_#t~nondet37, test_#t~nondet38, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3284#L198-1 [2020-07-29 02:44:52,500 INFO L796 eck$LassoCheckResult]: Loop: 3284#L198-1 assume !false; 3353#L539 assume test_~splverifierCounter~0 < 4; 3344#L540 test_~tmp~5 := test_#t~nondet35;havoc test_#t~nondet35; 3345#L548 assume !(0 != test_~tmp~5); 3349#L548-1 test_~tmp___0~2 := test_#t~nondet36;havoc test_#t~nondet36; 3350#L558 assume !(0 != test_~tmp___0~2); 3390#L558-1 test_~tmp___2~0 := test_#t~nondet37;havoc test_#t~nondet37; 3607#L568 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3342#L576-1 assume !(0 != ~pumpRunning~0); 3319#L334 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 3299#L392 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret15, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 3300#L366-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret34, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 3327#L312-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 3328#L317-1 isHighWaterLevel_#t~ret34 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret34;havoc isHighWaterLevel_#t~ret34; 3286#L494-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 3261#L494-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 3262#L500-1 processEnvironment__wrappee__highWaterSensor_#t~ret15 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret15;havoc processEnvironment__wrappee__highWaterSensor_#t~ret15; 3308#L370-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 3305#L341 havoc __utac_acc__Specification3_spec__1_#t~ret2, __utac_acc__Specification3_spec__1_#t~ret3, __utac_acc__Specification3_spec__1_#t~ret4, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;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; 3582#L272-1 __utac_acc__Specification3_spec__1_#t~ret2 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret2;havoc __utac_acc__Specification3_spec__1_#t~ret2; 3392#L192 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);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; 3311#L304 __utac_acc__Specification3_spec__1_#t~ret3 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret3;havoc __utac_acc__Specification3_spec__1_#t~ret3; 3312#L198 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 3284#L198-1 [2020-07-29 02:44:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-07-29 02:44:52,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:52,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249626424] [2020-07-29 02:44:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,609 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1532549460, now seen corresponding path program 1 times [2020-07-29 02:44:52,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:52,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255064069] [2020-07-29 02:44:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,636 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:44:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1730302702, now seen corresponding path program 1 times [2020-07-29 02:44:52,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:44:52,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011563164] [2020-07-29 02:44:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:44:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:44:52,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:44:52,773 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:44:52,916 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-07-29 02:45:41,676 WARN L193 SmtUtils]: Spent 48.66 s on a formula simplification. DAG size of input: 452 DAG size of output: 400 [2020-07-29 02:46:19,833 WARN L193 SmtUtils]: Spent 37.92 s on a formula simplification that was a NOOP. DAG size: 400 [2020-07-29 02:46:20,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:46:20 BoogieIcfgContainer [2020-07-29 02:46:20,065 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:46:20,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:46:20,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:46:20,066 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:46:20,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:44:48" (3/4) ... [2020-07-29 02:46:20,076 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 02:46:20,145 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 02:46:20,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:46:20,149 INFO L168 Benchmark]: Toolchain (without parser) took 94310.88 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 356.0 MB). Free memory was 961.6 MB in the beginning and 1.2 GB in the end (delta: -191.5 MB). Peak memory consumption was 164.5 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,149 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:46:20,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,151 INFO L168 Benchmark]: Boogie Preprocessor took 90.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:46:20,152 INFO L168 Benchmark]: RCFGBuilder took 1464.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.8 MB in the end (delta: 148.2 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,153 INFO L168 Benchmark]: BuchiAutomizer took 91860.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 975.8 MB in the beginning and 1.2 GB in the end (delta: -187.6 MB). Peak memory consumption was 303.4 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,153 INFO L168 Benchmark]: Witness Printer took 80.38 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 11.5 GB. [2020-07-29 02:46:20,157 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 686.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 121.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1464.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.8 MB in the end (delta: 148.2 MB). Peak memory consumption was 148.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 91860.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 975.8 MB in the beginning and 1.2 GB in the end (delta: -187.6 MB). Peak memory consumption was 303.4 MB. Max. memory is 11.5 GB. * Witness Printer took 80.38 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 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 604 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 91.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 88.6s. Construction of modules took 0.2s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 415 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 604 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 560 SDtfs, 913 SDslu, 934 SDs, 0 SdLazy, 110 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 538]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31475} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9ce4001=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ebeffa2=0, NULL=36854, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a1aed11=0, retValue_acc=0, NULL=31475, NULL=36867, NULL=0, NULL=0, methaneLevelCritical=0, NULL=31477, tmp___0=0, NULL=0, tmp=0, NULL=0, NULL=36861, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a491eb4=0, retValue_acc=0, NULL=36868, NULL=0, tmp___1=0, NULL=36870, NULL=31480, NULL=0, NULL=0, tmp___0=1, tmp=0, cleanupTimeShifts=4, NULL=36857, NULL=36859, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67f5ca49=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e107260=57, NULL=36858, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e0187e4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@186b1dee=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=36862, \result=1, NULL=0, NULL=31479, NULL=0, retValue_acc=0, NULL=36865, \result=0, NULL=0, NULL=36853, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=31478, \result=0, retValue_acc=1, NULL=36866, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71e82ef=0, NULL=0, NULL=36871, NULL=0, NULL=0, \result=1, NULL=36869, NULL=36864, NULL=0, tmp=1, retValue_acc=1, tmp___2=57, tmp___0=0, retValue_acc=1, splverifierCounter=0, NULL=0, \result=0, NULL=31476, NULL=36863, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76d93cfd=0, NULL=36852, tmp___1=0, tmp=0, head=0, NULL=36856, NULL=36855, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28243211=0, NULL=0, NULL=36860} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L40] int cleanupTimeShifts = 4; [L229] int waterLevel = 1; [L230] int methaneLevelCritical = 0; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L766] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L529] int splverifierCounter ; [L530] int tmp ; [L531] int tmp___0 ; [L532] int tmp___1 ; [L533] int tmp___2 ; [L536] splverifierCounter = 0 Loop: [L538] COND TRUE 1 [L540] COND TRUE splverifierCounter < 4 [L546] tmp = __VERIFIER_nondet_int() [L548] COND FALSE !(\read(tmp)) [L556] tmp___0 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___0)) [L566] tmp___2 = __VERIFIER_nondet_int() [L568] COND TRUE \read(tmp___2) [L523] systemActive = 1 [L334] COND FALSE !(\read(pumpRunning)) [L341] COND TRUE \read(systemActive) [L389] int tmp ; [L392] COND FALSE !(\read(pumpRunning)) [L363] int tmp ; [L366] COND TRUE ! pumpRunning [L486] int retValue_acc ; [L487] int tmp ; [L488] int tmp___0 ; [L309] int retValue_acc ; [L312] COND TRUE waterLevel < 2 [L313] retValue_acc = 1 [L314] return (retValue_acc); [L492] tmp = isHighWaterSensorDry() [L494] COND TRUE \read(tmp) [L495] tmp___0 = 0 [L499] retValue_acc = tmp___0 [L500] return (retValue_acc); [L368] tmp = isHighWaterLevel() [L370] COND FALSE !(\read(tmp)) [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L268] int retValue_acc ; [L271] retValue_acc = methaneLevelCritical [L272] return (retValue_acc); [L190] tmp = isMethaneLevelCritical() [L192] COND FALSE !(\read(tmp)) [L300] int retValue_acc ; [L303] retValue_acc = waterLevel [L304] return (retValue_acc); [L196] tmp___0 = getWaterLevel() [L198] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...