./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product61.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 0997f7b4913388226e163b59383b8166cd33b05b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 03:35:11,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 03:35:11,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 03:35:11,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 03:35:11,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 03:35:11,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 03:35:11,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 03:35:11,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 03:35:11,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 03:35:11,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 03:35:11,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 03:35:11,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 03:35:11,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 03:35:11,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 03:35:11,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 03:35:11,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 03:35:11,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 03:35:11,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 03:35:11,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 03:35:11,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 03:35:11,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 03:35:11,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 03:35:11,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 03:35:11,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 03:35:11,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 03:35:11,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 03:35:11,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 03:35:11,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 03:35:11,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 03:35:11,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 03:35:11,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 03:35:11,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 03:35:11,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 03:35:11,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 03:35:11,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 03:35:11,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 03:35:11,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 03:35:11,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 03:35:11,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 03:35:11,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 03:35:11,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 03:35:11,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 03:35:11,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 03:35:11,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 03:35:11,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 03:35:11,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 03:35:11,925 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 03:35:11,925 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 03:35:11,926 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 03:35:11,926 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 03:35:11,926 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 03:35:11,926 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 03:35:11,926 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 03:35:11,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 03:35:11,927 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 03:35:11,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 03:35:11,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 03:35:11,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 03:35:11,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 03:35:11,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 03:35:11,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 03:35:11,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 03:35:11,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 03:35:11,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 03:35:11,929 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 03:35:11,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 03:35:11,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 03:35:11,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 03:35:11,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 03:35:11,930 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 03:35:11,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 03:35:11,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 03:35:11,931 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 03:35:11,932 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 03:35:11,932 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 -> 0997f7b4913388226e163b59383b8166cd33b05b [2019-11-28 03:35:12,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 03:35:12,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 03:35:12,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 03:35:12,275 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 03:35:12,276 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 03:35:12,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2019-11-28 03:35:12,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c9482a2/3224761246744e33b81059b687ba4251/FLAG4878c0f72 [2019-11-28 03:35:12,868 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 03:35:12,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2019-11-28 03:35:12,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c9482a2/3224761246744e33b81059b687ba4251/FLAG4878c0f72 [2019-11-28 03:35:13,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c9482a2/3224761246744e33b81059b687ba4251 [2019-11-28 03:35:13,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 03:35:13,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 03:35:13,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 03:35:13,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 03:35:13,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 03:35:13,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2f9c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13, skipping insertion in model container [2019-11-28 03:35:13,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 03:35:13,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 03:35:13,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:35:13,698 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 03:35:13,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 03:35:13,860 INFO L208 MainTranslator]: Completed translation [2019-11-28 03:35:13,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13 WrapperNode [2019-11-28 03:35:13,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 03:35:13,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 03:35:13,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 03:35:13,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 03:35:13,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 03:35:13,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 03:35:13,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 03:35:13,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 03:35:13,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:13,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:14,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:14,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:14,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... [2019-11-28 03:35:14,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 03:35:14,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 03:35:14,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 03:35:14,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 03:35:14,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 03:35:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 03:35:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 03:35:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 03:35:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 03:35:15,268 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 03:35:15,269 INFO L297 CfgBuilder]: Removed 354 assume(true) statements. [2019-11-28 03:35:15,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15 BoogieIcfgContainer [2019-11-28 03:35:15,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 03:35:15,271 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 03:35:15,271 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 03:35:15,275 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 03:35:15,276 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:35:15,276 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:35:13" (1/3) ... [2019-11-28 03:35:15,278 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24ab014d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:35:15, skipping insertion in model container [2019-11-28 03:35:15,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:35:15,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:13" (2/3) ... [2019-11-28 03:35:15,278 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24ab014d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:35:15, skipping insertion in model container [2019-11-28 03:35:15,279 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 03:35:15,279 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15" (3/3) ... [2019-11-28 03:35:15,281 INFO L371 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2019-11-28 03:35:15,331 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 03:35:15,332 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 03:35:15,332 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 03:35:15,332 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 03:35:15,333 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 03:35:15,333 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 03:35:15,333 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 03:35:15,333 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 03:35:15,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states. [2019-11-28 03:35:15,398 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2019-11-28 03:35:15,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:35:15,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:35:15,411 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:35:15,411 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:35:15,411 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 03:35:15,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states. [2019-11-28 03:35:15,433 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2019-11-28 03:35:15,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:35:15,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:35:15,435 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:35:15,435 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:35:15,440 INFO L794 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 3 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string16.base, #t~string16.offset, 1);call write~init~int(80, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(117, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(109, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(112, #t~string16.base, 4 + #t~string16.offset, 1);call write~init~int(58, #t~string16.base, 5 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 6 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string22.base, #t~string22.offset, 1);call write~init~int(32, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string24.base, #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 1 + #t~string24.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string30.base, #t~string30.offset, 1);call write~init~int(77, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(101, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(116, #t~string30.base, 3 + #t~string30.offset, 1);call write~init~int(104, #t~string30.base, 4 + #t~string30.offset, 1);call write~init~int(58, #t~string30.base, 5 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 6 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string32.base, #t~string32.offset, 1);call write~init~int(82, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(73, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(84, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 4 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(75, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);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~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 12#L-1true havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 60#L627true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 229#L635true main_#t~ret37 := valid_product_#res;main_~tmp~7 := main_#t~ret37;havoc main_#t~ret37; 150#L557true assume 0 != main_~tmp~7; 189#L531true havoc test_#t~nondet0, test_#t~nondet1, test_#t~nondet2, test_#t~nondet3, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 188#L586-1true [2019-11-28 03:35:15,441 INFO L796 eck$LassoCheckResult]: Loop: 188#L586-1true assume !false; 46#L55true assume test_~splverifierCounter~0 < 4; 159#L56true test_~tmp~0 := test_#t~nondet0;havoc test_#t~nondet0; 39#L64true assume !(0 != test_~tmp~0); 38#L64-1true test_~tmp___0~0 := test_#t~nondet1;havoc test_#t~nondet1; 208#L74true assume !(0 != test_~tmp___0~0); 186#L74-1true test_~tmp___2~0 := test_#t~nondet2;havoc test_#t~nondet2; 104#L84true assume 0 != test_~tmp___2~0; 230#L90-2true assume !(0 != ~pumpRunning~0); 56#L126true assume !(0 != ~systemActive~0); 146#L133true havoc __utac_acc__Specification3_spec__1_#t~ret38, __utac_acc__Specification3_spec__1_#t~ret39, __utac_acc__Specification3_spec__1_#t~ret40, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 121#L403-5true __utac_acc__Specification3_spec__1_#t~ret38 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret38;havoc __utac_acc__Specification3_spec__1_#t~ret38; 221#L580true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 188#L586-1true [2019-11-28 03:35:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:15,449 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2019-11-28 03:35:15,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:15,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583219413] [2019-11-28 03:35:15,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:15,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:15,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1675126795, now seen corresponding path program 1 times [2019-11-28 03:35:15,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:15,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643914791] [2019-11-28 03:35:15,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:15,871 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash 39152143, now seen corresponding path program 1 times [2019-11-28 03:35:15,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:15,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479788233] [2019-11-28 03:35:15,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:35:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:35:16,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479788233] [2019-11-28 03:35:16,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:35:16,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 03:35:16,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996648844] [2019-11-28 03:35:16,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:35:16,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 03:35:16,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 03:35:16,185 INFO L87 Difference]: Start difference. First operand 228 states. Second operand 6 states. [2019-11-28 03:35:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:35:16,395 INFO L93 Difference]: Finished difference Result 228 states and 331 transitions. [2019-11-28 03:35:16,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 03:35:16,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 331 transitions. [2019-11-28 03:35:16,404 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-11-28 03:35:16,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2019-11-28 03:35:16,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2019-11-28 03:35:16,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2019-11-28 03:35:16,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2019-11-28 03:35:16,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:35:16,419 INFO L688 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 03:35:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2019-11-28 03:35:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2019-11-28 03:35:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-11-28 03:35:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2019-11-28 03:35:16,460 INFO L711 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 03:35:16,460 INFO L591 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2019-11-28 03:35:16,461 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 03:35:16,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2019-11-28 03:35:16,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2019-11-28 03:35:16,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:35:16,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:35:16,465 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:35:16,465 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:35:16,465 INFO L794 eck$LassoCheckResult]: Stem: 540#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 3 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string16.base, #t~string16.offset, 1);call write~init~int(80, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(117, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(109, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(112, #t~string16.base, 4 + #t~string16.offset, 1);call write~init~int(58, #t~string16.base, 5 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 6 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string22.base, #t~string22.offset, 1);call write~init~int(32, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string24.base, #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 1 + #t~string24.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string30.base, #t~string30.offset, 1);call write~init~int(77, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(101, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(116, #t~string30.base, 3 + #t~string30.offset, 1);call write~init~int(104, #t~string30.base, 4 + #t~string30.offset, 1);call write~init~int(58, #t~string30.base, 5 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 6 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string32.base, #t~string32.offset, 1);call write~init~int(82, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(73, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(84, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 4 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(75, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);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~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 489#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 490#L627 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 567#L635 main_#t~ret37 := valid_product_#res;main_~tmp~7 := main_#t~ret37;havoc main_#t~ret37; 671#L557 assume 0 != main_~tmp~7; 672#L531 havoc test_#t~nondet0, test_#t~nondet1, test_#t~nondet2, test_#t~nondet3, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 669#L586-1 [2019-11-28 03:35:16,466 INFO L796 eck$LassoCheckResult]: Loop: 669#L586-1 assume !false; 543#L55 assume test_~splverifierCounter~0 < 4; 544#L56 test_~tmp~0 := test_#t~nondet0;havoc test_#t~nondet0; 531#L64 assume !(0 != test_~tmp~0); 529#L64-1 test_~tmp___0~0 := test_#t~nondet1;havoc test_#t~nondet1; 530#L74 assume !(0 != test_~tmp___0~0); 598#L74-1 test_~tmp___2~0 := test_#t~nondet2;havoc test_#t~nondet2; 625#L84 assume 0 != test_~tmp___2~0; 626#L90-2 assume !(0 != ~pumpRunning~0); 559#L126 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret6, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 560#L210 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret5, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 675#L184-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret4, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 502#L158-3 assume !(0 == ~pumpRunning~0); 501#L133 havoc __utac_acc__Specification3_spec__1_#t~ret38, __utac_acc__Specification3_spec__1_#t~ret39, __utac_acc__Specification3_spec__1_#t~ret40, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 645#L403-5 __utac_acc__Specification3_spec__1_#t~ret38 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret38;havoc __utac_acc__Specification3_spec__1_#t~ret38; 646#L580 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 669#L586-1 [2019-11-28 03:35:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2019-11-28 03:35:16,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:16,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366595395] [2019-11-28 03:35:16,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:16,610 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:16,614 INFO L82 PathProgramCache]: Analyzing trace with hash 391395508, now seen corresponding path program 1 times [2019-11-28 03:35:16,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:16,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324112621] [2019-11-28 03:35:16,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:35:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:35:16,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324112621] [2019-11-28 03:35:16,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:35:16,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 03:35:16,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495063783] [2019-11-28 03:35:16,645 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 03:35:16,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:35:16,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 03:35:16,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 03:35:16,649 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand 3 states. [2019-11-28 03:35:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:35:16,825 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2019-11-28 03:35:16,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 03:35:16,826 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2019-11-28 03:35:16,829 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2019-11-28 03:35:16,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2019-11-28 03:35:16,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2019-11-28 03:35:16,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2019-11-28 03:35:16,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2019-11-28 03:35:16,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:35:16,835 INFO L688 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 03:35:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2019-11-28 03:35:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2019-11-28 03:35:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2019-11-28 03:35:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2019-11-28 03:35:16,847 INFO L711 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 03:35:16,848 INFO L591 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2019-11-28 03:35:16,848 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 03:35:16,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2019-11-28 03:35:16,850 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2019-11-28 03:35:16,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:35:16,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:35:16,852 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:35:16,852 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:35:16,852 INFO L794 eck$LassoCheckResult]: Stem: 1067#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 3 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string16.base, #t~string16.offset, 1);call write~init~int(80, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(117, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(109, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(112, #t~string16.base, 4 + #t~string16.offset, 1);call write~init~int(58, #t~string16.base, 5 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 6 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string22.base, #t~string22.offset, 1);call write~init~int(32, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string24.base, #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 1 + #t~string24.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string30.base, #t~string30.offset, 1);call write~init~int(77, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(101, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(116, #t~string30.base, 3 + #t~string30.offset, 1);call write~init~int(104, #t~string30.base, 4 + #t~string30.offset, 1);call write~init~int(58, #t~string30.base, 5 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 6 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string32.base, #t~string32.offset, 1);call write~init~int(82, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(73, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(84, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 4 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(75, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);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~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 956#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 957#L627 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1091#L635 main_#t~ret37 := valid_product_#res;main_~tmp~7 := main_#t~ret37;havoc main_#t~ret37; 1022#L557 assume 0 != main_~tmp~7; 1023#L531 havoc test_#t~nondet0, test_#t~nondet1, test_#t~nondet2, test_#t~nondet3, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1019#L586-1 [2019-11-28 03:35:16,853 INFO L796 eck$LassoCheckResult]: Loop: 1019#L586-1 assume !false; 1066#L55 assume test_~splverifierCounter~0 < 4; 1033#L56 test_~tmp~0 := test_#t~nondet0;havoc test_#t~nondet0; 1034#L64 assume !(0 != test_~tmp~0); 1037#L64-1 test_~tmp___0~0 := test_#t~nondet1;havoc test_#t~nondet1; 1040#L74 assume !(0 != test_~tmp___0~0); 1064#L74-1 test_~tmp___2~0 := test_#t~nondet2;havoc test_#t~nondet2; 953#L84 assume 0 != test_~tmp___2~0; 954#L90-2 assume !(0 != ~pumpRunning~0); 1086#L126 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret6, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1028#L210 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret5, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1029#L184-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret4, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 983#L158-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret25, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 984#L443-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1056#L448-3 isHighWaterLevel_#t~ret25 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret25;havoc isHighWaterLevel_#t~ret25; 945#L329-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 946#L329-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1103#L335-3 processEnvironment__wrappee__highWaterSensor_#t~ret4 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret4;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4; 1089#L162-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 981#L133 havoc __utac_acc__Specification3_spec__1_#t~ret38, __utac_acc__Specification3_spec__1_#t~ret39, __utac_acc__Specification3_spec__1_#t~ret40, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 978#L403-5 __utac_acc__Specification3_spec__1_#t~ret38 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret38;havoc __utac_acc__Specification3_spec__1_#t~ret38; 979#L580 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 1019#L586-1 [2019-11-28 03:35:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2019-11-28 03:35:16,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:16,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224939775] [2019-11-28 03:35:16,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:16,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash 697809952, now seen corresponding path program 1 times [2019-11-28 03:35:16,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:16,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340805449] [2019-11-28 03:35:16,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,017 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:17,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1951115078, now seen corresponding path program 1 times [2019-11-28 03:35:17,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:17,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17110270] [2019-11-28 03:35:17,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 03:35:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 03:35:17,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17110270] [2019-11-28 03:35:17,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 03:35:17,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 03:35:17,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077004463] [2019-11-28 03:35:17,257 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-11-28 03:35:17,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 03:35:17,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 03:35:17,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 03:35:17,319 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand 5 states. [2019-11-28 03:35:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 03:35:17,659 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2019-11-28 03:35:17,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 03:35:17,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2019-11-28 03:35:17,668 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2019-11-28 03:35:17,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2019-11-28 03:35:17,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2019-11-28 03:35:17,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2019-11-28 03:35:17,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2019-11-28 03:35:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 03:35:17,686 INFO L688 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2019-11-28 03:35:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2019-11-28 03:35:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2019-11-28 03:35:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-11-28 03:35:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2019-11-28 03:35:17,728 INFO L711 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2019-11-28 03:35:17,729 INFO L591 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2019-11-28 03:35:17,729 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 03:35:17,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2019-11-28 03:35:17,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2019-11-28 03:35:17,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 03:35:17,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 03:35:17,735 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 03:35:17,736 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 03:35:17,736 INFO L794 eck$LassoCheckResult]: Stem: 2064#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(102, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 3 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string16.base, #t~string16.offset, 1);call write~init~int(80, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(117, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(109, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(112, #t~string16.base, 4 + #t~string16.offset, 1);call write~init~int(58, #t~string16.base, 5 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 6 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string22.base, #t~string22.offset, 1);call write~init~int(32, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string24.base, #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 1 + #t~string24.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string30.base, #t~string30.offset, 1);call write~init~int(77, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(101, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(116, #t~string30.base, 3 + #t~string30.offset, 1);call write~init~int(104, #t~string30.base, 4 + #t~string30.offset, 1);call write~init~int(58, #t~string30.base, 5 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 6 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string32.base, #t~string32.offset, 1);call write~init~int(82, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(73, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(84, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 4 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(75, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);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~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1945#L-1 havoc main_#res;havoc main_#t~ret37, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 1946#L627 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 2097#L635 main_#t~ret37 := valid_product_#res;main_~tmp~7 := main_#t~ret37;havoc main_#t~ret37; 2015#L557 assume 0 != main_~tmp~7; 2016#L531 havoc test_#t~nondet0, test_#t~nondet1, test_#t~nondet2, test_#t~nondet3, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2065#L586-1 [2019-11-28 03:35:17,737 INFO L796 eck$LassoCheckResult]: Loop: 2065#L586-1 assume !false; 2341#L55 assume test_~splverifierCounter~0 < 4; 2026#L56 test_~tmp~0 := test_#t~nondet0;havoc test_#t~nondet0; 2027#L64 assume !(0 != test_~tmp~0); 2031#L64-1 test_~tmp___0~0 := test_#t~nondet1;havoc test_#t~nondet1; 2035#L74 assume !(0 != test_~tmp___0~0); 2061#L74-1 test_~tmp___2~0 := test_#t~nondet2;havoc test_#t~nondet2; 1942#L84 assume 0 != test_~tmp___2~0; 1943#L90-2 assume !(0 != ~pumpRunning~0); 2116#L126 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret6, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2333#L210 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret5, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2188#L184-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret4, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2329#L158-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret25, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2325#L443-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2323#L448-3 isHighWaterLevel_#t~ret25 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret25;havoc isHighWaterLevel_#t~ret25; 2320#L329-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2317#L329-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2313#L335-3 processEnvironment__wrappee__highWaterSensor_#t~ret4 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret4;havoc processEnvironment__wrappee__highWaterSensor_#t~ret4; 2192#L162-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 2166#L133 havoc __utac_acc__Specification3_spec__1_#t~ret38, __utac_acc__Specification3_spec__1_#t~ret39, __utac_acc__Specification3_spec__1_#t~ret40, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1967#L403-5 __utac_acc__Specification3_spec__1_#t~ret38 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret38;havoc __utac_acc__Specification3_spec__1_#t~ret38; 1968#L580 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 2037#L435 __utac_acc__Specification3_spec__1_#t~ret39 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret39;havoc __utac_acc__Specification3_spec__1_#t~ret39; 2038#L586 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 2065#L586-1 [2019-11-28 03:35:17,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2019-11-28 03:35:17,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:17,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014920936] [2019-11-28 03:35:17,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,834 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 580478418, now seen corresponding path program 1 times [2019-11-28 03:35:17,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:17,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599772000] [2019-11-28 03:35:17,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 03:35:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1879105672, now seen corresponding path program 1 times [2019-11-28 03:35:17,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 03:35:17,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383756613] [2019-11-28 03:35:17,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 03:35:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 03:35:17,926 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 03:35:18,084 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-11-28 03:35:43,157 WARN L192 SmtUtils]: Spent 25.00 s on a formula simplification. DAG size of input: 452 DAG size of output: 400 [2019-11-28 03:35:56,181 WARN L192 SmtUtils]: Spent 13.02 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-28 03:35:56,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:35:56 BoogieIcfgContainer [2019-11-28 03:35:56,280 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 03:35:56,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 03:35:56,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 03:35:56,282 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 03:35:56,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:15" (3/4) ... [2019-11-28 03:35:56,288 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 03:35:56,346 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 03:35:56,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 03:35:56,348 INFO L168 Benchmark]: Toolchain (without parser) took 43149.32 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -166.3 MB). Peak memory consumption was 153.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,349 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 03:35:56,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.41 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. [2019-11-28 03:35:56,351 INFO L168 Benchmark]: Boogie Preprocessor took 122.95 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,351 INFO L168 Benchmark]: RCFGBuilder took 1193.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,352 INFO L168 Benchmark]: BuchiAutomizer took 41008.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 183.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -122.8 MB). Peak memory consumption was 362.6 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,353 INFO L168 Benchmark]: Witness Printer took 65.23 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-11-28 03:35:56,359 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 661.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.41 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. * Boogie Preprocessor took 122.95 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1193.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 91.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41008.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 183.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -122.8 MB). Peak memory consumption was 362.6 MB. Max. memory is 11.5 GB. * Witness Printer took 65.23 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 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 6 locations. The remainder module has 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 40.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 39.8s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 914 SDtfs, 2491 SDslu, 1205 SDs, 0 SdLazy, 209 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 54]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6827} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47bff454=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5279b9e7=0, NULL=0, NULL=6833, NULL=0, NULL=6827, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42053073=0, NULL=6845, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e45dc9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aefff09=69, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b9e624=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73ac4aac=0, NULL=6841, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@205fd2ee=0, tmp___1=0, NULL=6852, NULL=6830, cleanupTimeShifts=4, tmp=0, NULL=6828, tmp=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ce23d6d=0, NULL=0, tmp___0=0, NULL=6834, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=6835, NULL=0, NULL=0, tmp=1, NULL=0, \result=1, NULL=6844, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10dd7c5a=0, NULL=0, NULL=0, tmp=1, NULL=6847, retValue_acc=1, NULL=6838, tmp=0, head=0, NULL=0, NULL=6849, NULL=6840, NULL=6843, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1be221fa=0, tmp=0, NULL=0, NULL=0, NULL=6842, retValue_acc=0, NULL=6851, tmp___0=0, NULL=0, NULL=0, NULL=6848, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e34b355=0, tmp=0, NULL=6836, tmp___0=1, NULL=0, systemActive=1, NULL=6839, \result=1, NULL=0, NULL=0, NULL=6831, \result=0, NULL=0, retValue_acc=0, NULL=6832, \result=0, NULL=0, NULL=0, NULL=6837, tmp___2=69, splverifierCounter=0, \result=0, NULL=6846, tmp___1=0, NULL=0, NULL=0, NULL=6850, NULL=0, NULL=6829} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L118] int pumpRunning = 0; [L119] int systemActive = 1; [L360] int waterLevel = 1; [L361] int methaneLevelCritical = 0; [L472] int cleanupTimeShifts = 4; [L809] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L548] int retValue_acc ; [L549] int tmp ; [L631] int retValue_acc ; [L634] retValue_acc = 1 [L635] return (retValue_acc); [L555] tmp = valid_product() [L557] COND TRUE \read(tmp) [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 Loop: [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L126] COND FALSE !(\read(pumpRunning)) [L133] COND TRUE \read(systemActive) [L207] int tmp ; [L210] COND FALSE !(\read(pumpRunning)) [L181] int tmp ; [L184] COND FALSE !(\read(pumpRunning)) [L155] int tmp ; [L158] COND TRUE ! pumpRunning [L321] int retValue_acc ; [L322] int tmp ; [L323] int tmp___0 ; [L440] int retValue_acc ; [L443] COND TRUE waterLevel < 2 [L444] retValue_acc = 1 [L445] return (retValue_acc); [L327] tmp = isHighWaterSensorDry() [L329] COND TRUE \read(tmp) [L330] tmp___0 = 0 [L334] retValue_acc = tmp___0 [L335] return (retValue_acc); [L160] tmp = isHighWaterLevel() [L162] COND FALSE !(\read(tmp)) [L572] int tmp ; [L573] int tmp___0 ; [L574] int tmp___1 ; [L399] int retValue_acc ; [L402] retValue_acc = methaneLevelCritical [L403] return (retValue_acc); [L578] tmp = isMethaneLevelCritical() [L580] COND FALSE !(\read(tmp)) [L431] int retValue_acc ; [L434] retValue_acc = waterLevel [L435] return (retValue_acc); [L584] tmp___0 = getWaterLevel() [L586] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...