./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product33.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 5667765c016e1c72bafcc0c365d87d7652cb3eb1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 21:06:03,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:06:03,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:06:03,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:06:03,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:06:03,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:06:03,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:06:03,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:06:03,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:06:03,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:06:03,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:06:03,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:06:03,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:06:03,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:06:03,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:06:03,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:06:03,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:06:03,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:06:03,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:06:03,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:06:03,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:06:03,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:06:03,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:06:03,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:06:03,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:06:03,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:06:03,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:06:03,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:06:03,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:06:03,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:06:03,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:06:03,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:06:03,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:06:03,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:06:03,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:06:03,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:06:03,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:06:03,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:06:03,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:06:03,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:06:03,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:06:03,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:06:03,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:06:03,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:06:03,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:06:03,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:06:03,172 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:06:03,173 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:06:03,173 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:06:03,173 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:06:03,173 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:06:03,173 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:06:03,174 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:06:03,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:06:03,174 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:06:03,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:06:03,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:06:03,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:06:03,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:06:03,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:06:03,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:06:03,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:06:03,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:06:03,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:06:03,176 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:06:03,176 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:06:03,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:06:03,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:06:03,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:06:03,177 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:06:03,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:06:03,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:06:03,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:06:03,178 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:06:03,179 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:06:03,179 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 -> 5667765c016e1c72bafcc0c365d87d7652cb3eb1 [2019-11-28 21:06:03,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:06:03,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:06:03,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:06:03,528 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:06:03,528 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:06:03,529 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2019-11-28 21:06:03,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f6870e1/b20b85094ae3487187b878355d0362a2/FLAG26fb9cc62 [2019-11-28 21:06:04,047 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:06:04,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product33.cil.c [2019-11-28 21:06:04,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f6870e1/b20b85094ae3487187b878355d0362a2/FLAG26fb9cc62 [2019-11-28 21:06:04,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9f6870e1/b20b85094ae3487187b878355d0362a2 [2019-11-28 21:06:04,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:06:04,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:06:04,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:06:04,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:06:04,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:06:04,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:06:04" (1/1) ... [2019-11-28 21:06:04,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67981a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:04, skipping insertion in model container [2019-11-28 21:06:04,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:06:04" (1/1) ... [2019-11-28 21:06:04,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:06:04,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:06:05,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:06:05,043 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:06:05,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:06:05,146 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:06:05,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05 WrapperNode [2019-11-28 21:06:05,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:06:05,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:06:05,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:06:05,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:06:05,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:06:05,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:06:05,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:06:05,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:06:05,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... [2019-11-28 21:06:05,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:06:05,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:06:05,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:06:05,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:06:05,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:06:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 21:06:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 21:06:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:06:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:06:06,189 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:06:06,190 INFO L287 CfgBuilder]: Removed 102 assume(true) statements. [2019-11-28 21:06:06,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:06:06 BoogieIcfgContainer [2019-11-28 21:06:06,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:06:06,192 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:06:06,192 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:06:06,196 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:06:06,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:06:06,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:06:04" (1/3) ... [2019-11-28 21:06:06,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e1c2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:06:06, skipping insertion in model container [2019-11-28 21:06:06,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:06:06,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:06:05" (2/3) ... [2019-11-28 21:06:06,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e1c2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:06:06, skipping insertion in model container [2019-11-28 21:06:06,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:06:06,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:06:06" (3/3) ... [2019-11-28 21:06:06,202 INFO L371 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product33.cil.c [2019-11-28 21:06:06,244 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:06:06,244 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:06:06,244 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:06:06,244 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:06:06,245 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:06:06,245 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:06:06,245 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:06:06,245 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:06:06,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states. [2019-11-28 21:06:06,291 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2019-11-28 21:06:06,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:06:06,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:06:06,301 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:06:06,301 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:06:06,301 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:06:06,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states. [2019-11-28 21:06:06,308 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2019-11-28 21:06:06,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:06:06,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:06:06,309 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:06:06,309 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:06:06,315 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(13);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string3.base, #t~string3.offset, 1);call write~init~int(77, #t~string3.base, 1 + #t~string3.offset, 1);call write~init~int(101, #t~string3.base, 2 + #t~string3.offset, 1);call write~init~int(116, #t~string3.base, 3 + #t~string3.offset, 1);call write~init~int(104, #t~string3.base, 4 + #t~string3.offset, 1);call write~init~int(58, #t~string3.base, 5 + #t~string3.offset, 1);call write~init~int(0, #t~string3.base, 6 + #t~string3.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string5.base, #t~string5.offset, 1);call write~init~int(82, #t~string5.base, 1 + #t~string5.offset, 1);call write~init~int(73, #t~string5.base, 2 + #t~string5.offset, 1);call write~init~int(84, #t~string5.base, 3 + #t~string5.offset, 1);call write~init~int(0, #t~string5.base, 4 + #t~string5.offset, 1);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string7.base, #t~string7.offset, 1);call write~init~int(75, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 2 + #t~string7.offset, 1);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string9.base, #t~string9.offset, 1);call write~init~int(0, #t~string9.base, 1 + #t~string9.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 13#L-1true havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 12#L895true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 17#L903true main_#t~ret10 := valid_product_#res;main_~tmp~0 := main_#t~ret10;havoc main_#t~ret10; 58#L229true assume 0 != main_~tmp~0; 45#L202true havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 67#L854-1true [2019-11-28 21:06:06,316 INFO L796 eck$LassoCheckResult]: Loop: 67#L854-1true assume !false; 27#L629true assume test_~splverifierCounter~0 < 4; 41#L630true test_~tmp~4 := test_#t~nondet46;havoc test_#t~nondet46; 46#L638true assume !(0 != test_~tmp~4); 48#L638-1true test_~tmp___0~0 := test_#t~nondet47;havoc test_#t~nondet47; 31#L648true assume !(0 != test_~tmp___0~0); 32#L648-1true test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 16#L658true assume 0 != test_~tmp___2~0; 63#L664-2true assume !(0 != ~pumpRunning~0); 9#L694true assume !(0 != ~systemActive~0); 73#L701true havoc __utac_acc__Specification3_spec__1_#t~ret69, __utac_acc__Specification3_spec__1_#t~ret70, __utac_acc__Specification3_spec__1_#t~ret71, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 57#L90true __utac_acc__Specification3_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret69;havoc __utac_acc__Specification3_spec__1_#t~ret69; 21#L848true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 67#L854-1true [2019-11-28 21:06:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2019-11-28 21:06:06,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:06,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668445560] [2019-11-28 21:06:06,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:06,694 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:06,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1681529867, now seen corresponding path program 1 times [2019-11-28 21:06:06,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:06,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452563573] [2019-11-28 21:06:06,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:06,739 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash 32749071, now seen corresponding path program 1 times [2019-11-28 21:06:06,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:06,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674344131] [2019-11-28 21:06:06,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:06:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:06:06,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674344131] [2019-11-28 21:06:06,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:06:06,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 21:06:06,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558157917] [2019-11-28 21:06:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:06:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 21:06:07,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 21:06:07,074 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 6 states. [2019-11-28 21:06:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:06:07,232 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2019-11-28 21:06:07,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 21:06:07,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 112 transitions. [2019-11-28 21:06:07,239 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2019-11-28 21:06:07,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 74 states and 105 transitions. [2019-11-28 21:06:07,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-28 21:06:07,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2019-11-28 21:06:07,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 105 transitions. [2019-11-28 21:06:07,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:06:07,250 INFO L688 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-11-28 21:06:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 105 transitions. [2019-11-28 21:06:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-11-28 21:06:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-28 21:06:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-11-28 21:06:07,287 INFO L711 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-11-28 21:06:07,287 INFO L591 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-11-28 21:06:07,287 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:06:07,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 105 transitions. [2019-11-28 21:06:07,289 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2019-11-28 21:06:07,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:06:07,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:06:07,291 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:06:07,291 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:06:07,291 INFO L794 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(13);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string3.base, #t~string3.offset, 1);call write~init~int(77, #t~string3.base, 1 + #t~string3.offset, 1);call write~init~int(101, #t~string3.base, 2 + #t~string3.offset, 1);call write~init~int(116, #t~string3.base, 3 + #t~string3.offset, 1);call write~init~int(104, #t~string3.base, 4 + #t~string3.offset, 1);call write~init~int(58, #t~string3.base, 5 + #t~string3.offset, 1);call write~init~int(0, #t~string3.base, 6 + #t~string3.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string5.base, #t~string5.offset, 1);call write~init~int(82, #t~string5.base, 1 + #t~string5.offset, 1);call write~init~int(73, #t~string5.base, 2 + #t~string5.offset, 1);call write~init~int(84, #t~string5.base, 3 + #t~string5.offset, 1);call write~init~int(0, #t~string5.base, 4 + #t~string5.offset, 1);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string7.base, #t~string7.offset, 1);call write~init~int(75, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 2 + #t~string7.offset, 1);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string9.base, #t~string9.offset, 1);call write~init~int(0, #t~string9.base, 1 + #t~string9.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 203#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 201#L895 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 202#L903 main_#t~ret10 := valid_product_#res;main_~tmp~0 := main_#t~ret10;havoc main_#t~ret10; 211#L229 assume 0 != main_~tmp~0; 242#L202 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 215#L854-1 [2019-11-28 21:06:07,292 INFO L796 eck$LassoCheckResult]: Loop: 215#L854-1 assume !false; 225#L629 assume test_~splverifierCounter~0 < 4; 226#L630 test_~tmp~4 := test_#t~nondet46;havoc test_#t~nondet46; 237#L638 assume !(0 != test_~tmp~4); 207#L638-1 test_~tmp___0~0 := test_#t~nondet47;havoc test_#t~nondet47; 232#L648 assume !(0 != test_~tmp___0~0); 233#L648-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 208#L658 assume 0 != test_~tmp___2~0; 209#L664-2 assume !(0 != ~pumpRunning~0); 195#L694 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret50, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 196#L726 assume !(0 == ~pumpRunning~0); 247#L701 havoc __utac_acc__Specification3_spec__1_#t~ret69, __utac_acc__Specification3_spec__1_#t~ret70, __utac_acc__Specification3_spec__1_#t~ret71, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 246#L90 __utac_acc__Specification3_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret69;havoc __utac_acc__Specification3_spec__1_#t~ret69; 214#L848 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 215#L854-1 [2019-11-28 21:06:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2019-11-28 21:06:07,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:07,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54913597] [2019-11-28 21:06:07,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,390 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash -619428466, now seen corresponding path program 1 times [2019-11-28 21:06:07,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:07,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471460471] [2019-11-28 21:06:07,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:06:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:06:07,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471460471] [2019-11-28 21:06:07,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:06:07,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 21:06:07,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312421665] [2019-11-28 21:06:07,409 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:06:07,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:06:07,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 21:06:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 21:06:07,410 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. cyclomatic complexity: 33 Second operand 3 states. [2019-11-28 21:06:07,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:06:07,498 INFO L93 Difference]: Finished difference Result 121 states and 165 transitions. [2019-11-28 21:06:07,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 21:06:07,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 165 transitions. [2019-11-28 21:06:07,503 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2019-11-28 21:06:07,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 121 states and 165 transitions. [2019-11-28 21:06:07,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2019-11-28 21:06:07,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 121 [2019-11-28 21:06:07,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 165 transitions. [2019-11-28 21:06:07,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:06:07,508 INFO L688 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2019-11-28 21:06:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 165 transitions. [2019-11-28 21:06:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-11-28 21:06:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-28 21:06:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2019-11-28 21:06:07,517 INFO L711 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2019-11-28 21:06:07,518 INFO L591 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2019-11-28 21:06:07,518 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 21:06:07,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 165 transitions. [2019-11-28 21:06:07,520 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2019-11-28 21:06:07,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:06:07,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:06:07,521 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:06:07,522 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] [2019-11-28 21:06:07,522 INFO L794 eck$LassoCheckResult]: Stem: 430#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(13);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string3.base, #t~string3.offset, 1);call write~init~int(77, #t~string3.base, 1 + #t~string3.offset, 1);call write~init~int(101, #t~string3.base, 2 + #t~string3.offset, 1);call write~init~int(116, #t~string3.base, 3 + #t~string3.offset, 1);call write~init~int(104, #t~string3.base, 4 + #t~string3.offset, 1);call write~init~int(58, #t~string3.base, 5 + #t~string3.offset, 1);call write~init~int(0, #t~string3.base, 6 + #t~string3.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string5.base, #t~string5.offset, 1);call write~init~int(82, #t~string5.base, 1 + #t~string5.offset, 1);call write~init~int(73, #t~string5.base, 2 + #t~string5.offset, 1);call write~init~int(84, #t~string5.base, 3 + #t~string5.offset, 1);call write~init~int(0, #t~string5.base, 4 + #t~string5.offset, 1);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string7.base, #t~string7.offset, 1);call write~init~int(75, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 2 + #t~string7.offset, 1);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string9.base, #t~string9.offset, 1);call write~init~int(0, #t~string9.base, 1 + #t~string9.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 402#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 400#L895 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 401#L903 main_#t~ret10 := valid_product_#res;main_~tmp~0 := main_#t~ret10;havoc main_#t~ret10; 410#L229 assume 0 != main_~tmp~0; 446#L202 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 447#L854-1 [2019-11-28 21:06:07,523 INFO L796 eck$LassoCheckResult]: Loop: 447#L854-1 assume !false; 465#L629 assume test_~splverifierCounter~0 < 4; 441#L630 test_~tmp~4 := test_#t~nondet46;havoc test_#t~nondet46; 442#L638 assume !(0 != test_~tmp~4); 406#L638-1 test_~tmp___0~0 := test_#t~nondet47;havoc test_#t~nondet47; 431#L648 assume !(0 != test_~tmp___0~0); 432#L648-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 407#L658 assume 0 != test_~tmp___2~0; 408#L664-2 assume !(0 != ~pumpRunning~0); 395#L694 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret50, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 396#L726 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret68, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 455#L130 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 390#L135 isHighWaterLevel_#t~ret68 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret68;havoc isHighWaterLevel_#t~ret68; 391#L828 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 449#L828-2 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 416#L834 processEnvironment_#t~ret50 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret50;havoc processEnvironment_#t~ret50; 417#L730 assume !(0 != processEnvironment_~tmp~5); 463#L701 havoc __utac_acc__Specification3_spec__1_#t~ret69, __utac_acc__Specification3_spec__1_#t~ret70, __utac_acc__Specification3_spec__1_#t~ret71, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 474#L90 __utac_acc__Specification3_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret69;havoc __utac_acc__Specification3_spec__1_#t~ret69; 472#L848 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 447#L854-1 [2019-11-28 21:06:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2019-11-28 21:06:07,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:07,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607519134] [2019-11-28 21:06:07,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:07,651 INFO L82 PathProgramCache]: Analyzing trace with hash -22033894, now seen corresponding path program 1 times [2019-11-28 21:06:07,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:07,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554134316] [2019-11-28 21:06:07,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:07,676 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash -7321920, now seen corresponding path program 1 times [2019-11-28 21:06:07,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:07,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83136476] [2019-11-28 21:06:07,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:06:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:06:07,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83136476] [2019-11-28 21:06:07,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:06:07,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 21:06:07,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572107742] [2019-11-28 21:06:08,041 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-11-28 21:06:08,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:06:08,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 21:06:08,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 21:06:08,112 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. cyclomatic complexity: 46 Second operand 5 states. [2019-11-28 21:06:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:06:08,235 INFO L93 Difference]: Finished difference Result 398 states and 547 transitions. [2019-11-28 21:06:08,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 21:06:08,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 547 transitions. [2019-11-28 21:06:08,241 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2019-11-28 21:06:08,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 547 transitions. [2019-11-28 21:06:08,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2019-11-28 21:06:08,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2019-11-28 21:06:08,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 547 transitions. [2019-11-28 21:06:08,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:06:08,251 INFO L688 BuchiCegarLoop]: Abstraction has 398 states and 547 transitions. [2019-11-28 21:06:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 547 transitions. [2019-11-28 21:06:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 236. [2019-11-28 21:06:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-11-28 21:06:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2019-11-28 21:06:08,270 INFO L711 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2019-11-28 21:06:08,270 INFO L591 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2019-11-28 21:06:08,270 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 21:06:08,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 316 transitions. [2019-11-28 21:06:08,273 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2019-11-28 21:06:08,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:06:08,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:06:08,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:06:08,275 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:06:08,275 INFO L794 eck$LassoCheckResult]: Stem: 966#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(13);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string3.base, #t~string3.offset, 1);call write~init~int(77, #t~string3.base, 1 + #t~string3.offset, 1);call write~init~int(101, #t~string3.base, 2 + #t~string3.offset, 1);call write~init~int(116, #t~string3.base, 3 + #t~string3.offset, 1);call write~init~int(104, #t~string3.base, 4 + #t~string3.offset, 1);call write~init~int(58, #t~string3.base, 5 + #t~string3.offset, 1);call write~init~int(0, #t~string3.base, 6 + #t~string3.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string5.base, #t~string5.offset, 1);call write~init~int(82, #t~string5.base, 1 + #t~string5.offset, 1);call write~init~int(73, #t~string5.base, 2 + #t~string5.offset, 1);call write~init~int(84, #t~string5.base, 3 + #t~string5.offset, 1);call write~init~int(0, #t~string5.base, 4 + #t~string5.offset, 1);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string7.base, #t~string7.offset, 1);call write~init~int(75, #t~string7.base, 1 + #t~string7.offset, 1);call write~init~int(0, #t~string7.base, 2 + #t~string7.offset, 1);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string9.base, #t~string9.offset, 1);call write~init~int(0, #t~string9.base, 1 + #t~string9.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(13);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string59.base, #t~string59.offset, 1);call write~init~int(80, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(117, #t~string59.base, 2 + #t~string59.offset, 1);call write~init~int(109, #t~string59.base, 3 + #t~string59.offset, 1);call write~init~int(112, #t~string59.base, 4 + #t~string59.offset, 1);call write~init~int(58, #t~string59.base, 5 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 6 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string65.base, #t~string65.offset, 1);call write~init~int(32, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string67.base, #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 1 + #t~string67.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 938#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 936#L895 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 937#L903 main_#t~ret10 := valid_product_#res;main_~tmp~0 := main_#t~ret10;havoc main_#t~ret10; 946#L229 assume 0 != main_~tmp~0; 986#L202 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 987#L854-1 [2019-11-28 21:06:08,275 INFO L796 eck$LassoCheckResult]: Loop: 987#L854-1 assume !false; 1086#L629 assume test_~splverifierCounter~0 < 4; 980#L630 test_~tmp~4 := test_#t~nondet46;havoc test_#t~nondet46; 981#L638 assume !(0 != test_~tmp~4); 1150#L638-1 test_~tmp___0~0 := test_#t~nondet47;havoc test_#t~nondet47; 967#L648 assume !(0 != test_~tmp___0~0); 968#L648-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 943#L658 assume 0 != test_~tmp___2~0; 944#L664-2 assume !(0 != ~pumpRunning~0); 1006#L694 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret50, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1134#L726 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret68, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1049#L130 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1131#L135 isHighWaterLevel_#t~ret68 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret68;havoc isHighWaterLevel_#t~ret68; 993#L828 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 994#L828-2 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 952#L834 processEnvironment_#t~ret50 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret50;havoc processEnvironment_#t~ret50; 953#L730 assume !(0 != processEnvironment_~tmp~5); 1023#L701 havoc __utac_acc__Specification3_spec__1_#t~ret69, __utac_acc__Specification3_spec__1_#t~ret70, __utac_acc__Specification3_spec__1_#t~ret71, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1001#L90 __utac_acc__Specification3_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret69;havoc __utac_acc__Specification3_spec__1_#t~ret69; 1002#L848 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 976#L122 __utac_acc__Specification3_spec__1_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret70;havoc __utac_acc__Specification3_spec__1_#t~ret70; 977#L854 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 987#L854-1 [2019-11-28 21:06:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:08,276 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2019-11-28 21:06:08,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:08,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569486928] [2019-11-28 21:06:08,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:08,403 INFO L82 PathProgramCache]: Analyzing trace with hash 300270412, now seen corresponding path program 1 times [2019-11-28 21:06:08,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:08,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257512544] [2019-11-28 21:06:08,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:06:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1553575538, now seen corresponding path program 1 times [2019-11-28 21:06:08,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:06:08,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687828559] [2019-11-28 21:06:08,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:06:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:06:08,524 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:06:08,672 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-11-28 21:06:33,290 WARN L192 SmtUtils]: Spent 24.54 s on a formula simplification. DAG size of input: 452 DAG size of output: 400 [2019-11-28 21:06:47,278 WARN L192 SmtUtils]: Spent 13.99 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-28 21:06:47,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:06:47 BoogieIcfgContainer [2019-11-28 21:06:47,372 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:06:47,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:06:47,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:06:47,375 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:06:47,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:06:06" (3/4) ... [2019-11-28 21:06:47,380 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 21:06:47,486 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 21:06:47,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:06:47,489 INFO L168 Benchmark]: Toolchain (without parser) took 43062.50 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -241.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 11.5 GB. [2019-11-28 21:06:47,490 INFO L168 Benchmark]: CDTParser took 0.21 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 21:06:47,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-28 21:06:47,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.04 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. [2019-11-28 21:06:47,493 INFO L168 Benchmark]: Boogie Preprocessor took 43.54 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 21:06:47,498 INFO L168 Benchmark]: RCFGBuilder took 930.71 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: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. [2019-11-28 21:06:47,502 INFO L168 Benchmark]: BuchiAutomizer took 41180.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 168.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -147.3 MB). Peak memory consumption was 385.5 MB. Max. memory is 11.5 GB. [2019-11-28 21:06:47,503 INFO L168 Benchmark]: Witness Printer took 112.81 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: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-11-28 21:06:47,507 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 719.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 69.04 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 43.54 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 930.71 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: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41180.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 168.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -147.3 MB). Peak memory consumption was 385.5 MB. Max. memory is 11.5 GB. * Witness Printer took 112.81 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: 9.1 MB). Peak memory consumption was 9.1 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 236 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 40.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 162 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 236 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 367 SDtfs, 803 SDslu, 499 SDs, 0 SdLazy, 72 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 628]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=5126} State at position 1 is {NULL=0, retValue_acc=0, NULL=5143, NULL=5128, NULL=0, NULL=5126, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d28b8ed=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a408ec0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@535462e7=52, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@443aa244=0, NULL=5127, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a2fff53=0, NULL=0, NULL=5145, NULL=5129, NULL=0, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a78e265=0, tmp___0=0, retValue_acc=1, NULL=0, tmp=0, NULL=5144, NULL=5150, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@236e6719=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@103f82eb=0, tmp___1=0, NULL=5133, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ab6bbdd=0, NULL=5130, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c0a7d64=0, cleanupTimeShifts=4, NULL=5140, NULL=5137, NULL=5147, NULL=5151, tmp=0, tmp___0=1, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=0, \result=0, tmp___0=0, NULL=0, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=5148, \result=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=5141, NULL=5142, NULL=5134, tmp___2=52, NULL=5135, tmp=1, splverifierCounter=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, \result=0, NULL=5132, NULL=5139, tmp___1=0, head=0, tmp=0, NULL=5136, NULL=0, NULL=5131, NULL=0, NULL=5149, NULL=5146, NULL=5138} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L141] int cleanupTimeShifts = 4; [L412] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L220] int retValue_acc ; [L221] int tmp ; [L899] int retValue_acc ; [L902] retValue_acc = 1 [L903] return (retValue_acc); [L227] tmp = valid_product() [L229] COND TRUE \read(tmp) [L619] int splverifierCounter ; [L620] int tmp ; [L621] int tmp___0 ; [L622] int tmp___1 ; [L623] int tmp___2 ; [L626] splverifierCounter = 0 Loop: [L628] COND TRUE 1 [L630] COND TRUE splverifierCounter < 4 [L636] tmp = __VERIFIER_nondet_int() [L638] COND FALSE !(\read(tmp)) [L646] tmp___0 = __VERIFIER_nondet_int() [L648] COND FALSE !(\read(tmp___0)) [L656] tmp___2 = __VERIFIER_nondet_int() [L658] COND TRUE \read(tmp___2) [L694] COND FALSE !(\read(pumpRunning)) [L701] COND TRUE \read(systemActive) [L723] int tmp ; [L726] COND TRUE ! pumpRunning [L820] int retValue_acc ; [L821] int tmp ; [L822] int tmp___0 ; [L127] int retValue_acc ; [L130] COND TRUE waterLevel < 2 [L131] retValue_acc = 1 [L132] return (retValue_acc); [L826] tmp = isHighWaterSensorDry() [L828] COND TRUE \read(tmp) [L829] tmp___0 = 0 [L833] retValue_acc = tmp___0 [L834] return (retValue_acc); [L728] tmp = isHighWaterLevel() [L730] COND FALSE !(\read(tmp)) [L840] int tmp ; [L841] int tmp___0 ; [L842] int tmp___1 ; [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L846] tmp = isMethaneLevelCritical() [L848] COND FALSE !(\read(tmp)) [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L852] tmp___0 = getWaterLevel() [L854] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...