./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product45.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 5b0a896c9198d491033cf1280f2bac63e7cf65be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:25:04,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:04,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:04,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:04,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:04,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:04,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:04,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:04,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:04,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:04,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:04,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:04,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:04,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:04,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:04,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:04,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:04,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:04,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:04,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:04,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:04,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:04,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:04,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:04,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:04,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:04,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:04,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:04,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:04,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:04,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:04,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:04,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:04,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:04,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:04,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:04,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:04,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:04,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:04,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:04,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:04,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:04,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:04,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:04,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:04,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:04,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:04,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:04,288 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:04,288 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:04,288 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:04,288 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:04,289 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:04,289 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:04,290 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:04,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:04,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:04,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:04,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:04,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:04,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:04,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:04,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:04,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:04,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:04,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:04,297 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:04,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:04,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:04,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:04,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:04,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:04,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:04,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:04,300 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:04,301 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b0a896c9198d491033cf1280f2bac63e7cf65be [2021-08-27 16:25:04,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:25:04,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:25:04,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:25:04,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:25:04,624 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:25:04,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2021-08-27 16:25:04,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb9ea91/e391847aa4ea4d6089d988647f461643/FLAG5d77d44de [2021-08-27 16:25:05,168 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:25:05,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2021-08-27 16:25:05,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb9ea91/e391847aa4ea4d6089d988647f461643/FLAG5d77d44de [2021-08-27 16:25:05,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb9ea91/e391847aa4ea4d6089d988647f461643 [2021-08-27 16:25:05,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:25:05,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:25:05,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:05,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:25:05,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:25:05,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71454de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05, skipping insertion in model container [2021-08-27 16:25:05,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:25:05,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:25:05,883 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[2740,2753] [2021-08-27 16:25:06,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:06,031 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:25:06,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[2740,2753] [2021-08-27 16:25:06,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:06,096 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:25:06,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06 WrapperNode [2021-08-27 16:25:06,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:06,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:06,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:25:06,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:25:06,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:06,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:25:06,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:25:06,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:25:06,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:25:06,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:25:06,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:25:06,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:25:06,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (1/1) ... [2021-08-27 16:25:06,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:25:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:25:06,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:25:06,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:25:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:25:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:25:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:25:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:25:07,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:25:07,182 INFO L299 CfgBuilder]: Removed 206 assume(true) statements. [2021-08-27 16:25:07,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:07 BoogieIcfgContainer [2021-08-27 16:25:07,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:25:07,185 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:25:07,185 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:25:07,188 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:25:07,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:07,189 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:25:05" (1/3) ... [2021-08-27 16:25:07,190 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d20ae52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:07, skipping insertion in model container [2021-08-27 16:25:07,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:07,190 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:06" (2/3) ... [2021-08-27 16:25:07,191 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d20ae52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:07, skipping insertion in model container [2021-08-27 16:25:07,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:07,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:07" (3/3) ... [2021-08-27 16:25:07,192 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2021-08-27 16:25:07,237 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:25:07,237 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:25:07,238 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:25:07,238 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:25:07,238 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:25:07,238 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:25:07,238 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:25:07,238 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:25:07,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:07,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:25:07,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:07,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:07,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:07,299 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:07,299 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:25:07,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:07,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:25:07,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:07,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:07,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:07,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:07,311 INFO L791 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 44#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 35#L861true 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; 54#L869true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 70#L957true assume 0 != main_~tmp~9; 21#L933true ~switchedOnBeforeTS~0 := 0; 3#L525true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 82#L546-1true [2021-08-27 16:25:07,312 INFO L793 eck$LassoCheckResult]: Loop: 82#L546-1true assume !false; 120#L782true assume test_~splverifierCounter~0 < 4; 84#L783true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 36#L791true assume !(0 != test_~tmp~8); 28#L791-1true test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 110#L801true assume !(0 != test_~tmp___0~2); 46#L801-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 81#L811true assume 0 != test_~tmp___2~0; 13#L817-2true havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 74#L710true __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 94#L535true assume !(0 != ~pumpRunning~0); 127#L582true assume !(0 != ~systemActive~0); 17#L589true havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;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; 87#L124true __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 41#L546true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 82#L546-1true [2021-08-27 16:25:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:25:07,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:07,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161107455] [2021-08-27 16:25:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:07,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:07,535 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:07,666 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:07,669 INFO L82 PathProgramCache]: Analyzing trace with hash 96567276, now seen corresponding path program 1 times [2021-08-27 16:25:07,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:07,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025828461] [2021-08-27 16:25:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:07,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:07,674 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:07,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:07,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:07,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2030592486, now seen corresponding path program 1 times [2021-08-27 16:25:07,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:07,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837502787] [2021-08-27 16:25:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:07,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:07,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:07,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837502787] [2021-08-27 16:25:07,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837502787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:07,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:25:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470265394] [2021-08-27 16:25:08,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:25:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:25:08,041 INFO L87 Difference]: Start difference. First operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:08,223 INFO L93 Difference]: Finished difference Result 135 states and 190 transitions. [2021-08-27 16:25:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:25:08,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 190 transitions. [2021-08-27 16:25:08,230 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:25:08,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 183 transitions. [2021-08-27 16:25:08,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2021-08-27 16:25:08,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 128 [2021-08-27 16:25:08,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 183 transitions. [2021-08-27 16:25:08,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:08,243 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 183 transitions. [2021-08-27 16:25:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-08-27 16:25:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.4296875) internal successors, (183), 127 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 183 transitions. [2021-08-27 16:25:08,281 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:08,281 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:08,281 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:25:08,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 183 transitions. [2021-08-27 16:25:08,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:25:08,288 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:08,288 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:08,289 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:08,289 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:08,290 INFO L791 eck$LassoCheckResult]: Stem: 414#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 357#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 341#L861 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; 342#L869 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 372#L957 assume 0 != main_~tmp~9; 319#L933 ~switchedOnBeforeTS~0 := 0; 288#L525 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 289#L546-1 [2021-08-27 16:25:08,290 INFO L793 eck$LassoCheckResult]: Loop: 289#L546-1 assume !false; 396#L782 assume test_~splverifierCounter~0 < 4; 398#L783 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 343#L791 assume !(0 != test_~tmp~8); 329#L791-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 330#L801 assume !(0 != test_~tmp___0~2); 360#L801-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 361#L811 assume 0 != test_~tmp___2~0; 306#L817-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 307#L710 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 390#L535 assume !(0 != ~pumpRunning~0); 379#L582 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 337#L640 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 338#L614-1 assume !(0 == ~pumpRunning~0); 311#L589 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;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; 312#L124 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 351#L546 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 289#L546-1 [2021-08-27 16:25:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:25:08,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847831076] [2021-08-27 16:25:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,328 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash -473447858, now seen corresponding path program 1 times [2021-08-27 16:25:08,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111840356] [2021-08-27 16:25:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:08,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:08,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111840356] [2021-08-27 16:25:08,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111840356] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:08,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:08,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:08,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996794749] [2021-08-27 16:25:08,392 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:08,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:08,393 INFO L87 Difference]: Start difference. First operand 128 states and 183 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:08,489 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2021-08-27 16:25:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:08,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 242 transitions. [2021-08-27 16:25:08,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:25:08,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 242 transitions. [2021-08-27 16:25:08,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2021-08-27 16:25:08,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2021-08-27 16:25:08,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 242 transitions. [2021-08-27 16:25:08,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:08,502 INFO L681 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 242 transitions. [2021-08-27 16:25:08,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-08-27 16:25:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 176 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2021-08-27 16:25:08,519 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:08,519 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:08,520 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:25:08,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 242 transitions. [2021-08-27 16:25:08,522 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:25:08,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:08,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:08,522 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:08,523 INFO L843 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] [2021-08-27 16:25:08,523 INFO L791 eck$LassoCheckResult]: Stem: 733#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 672#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 659#L861 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; 660#L869 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 687#L957 assume 0 != main_~tmp~9; 632#L933 ~switchedOnBeforeTS~0 := 0; 599#L525 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 600#L546-1 [2021-08-27 16:25:08,523 INFO L793 eck$LassoCheckResult]: Loop: 600#L546-1 assume !false; 711#L782 assume test_~splverifierCounter~0 < 4; 734#L783 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 775#L791 assume !(0 != test_~tmp~8); 642#L791-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 643#L801 assume !(0 != test_~tmp___0~2); 675#L801-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 676#L811 assume 0 != test_~tmp___2~0; 618#L817-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 619#L710 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 705#L535 assume !(0 != ~pumpRunning~0); 719#L582 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 651#L640 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 652#L614-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 718#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 712#L137-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 689#L759-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 690#L759-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 714#L765-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 708#L618-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 624#L589 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;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; 625#L124 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 665#L546 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 600#L546-1 [2021-08-27 16:25:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:25:08,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942085435] [2021-08-27 16:25:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,554 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,595 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash 793590522, now seen corresponding path program 1 times [2021-08-27 16:25:08,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877016061] [2021-08-27 16:25:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:08,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:08,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877016061] [2021-08-27 16:25:08,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877016061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:08,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:08,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:25:08,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069827825] [2021-08-27 16:25:08,647 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:08,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:25:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:25:08,648 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. cyclomatic complexity: 67 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:08,804 INFO L93 Difference]: Finished difference Result 497 states and 667 transitions. [2021-08-27 16:25:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:25:08,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 497 states and 667 transitions. [2021-08-27 16:25:08,808 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 319 [2021-08-27 16:25:08,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 497 states to 497 states and 667 transitions. [2021-08-27 16:25:08,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 497 [2021-08-27 16:25:08,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 497 [2021-08-27 16:25:08,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 497 states and 667 transitions. [2021-08-27 16:25:08,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:08,814 INFO L681 BuchiCegarLoop]: Abstraction has 497 states and 667 transitions. [2021-08-27 16:25:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states and 667 transitions. [2021-08-27 16:25:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 347. [2021-08-27 16:25:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 347 states have (on average 1.3342939481268012) internal successors, (463), 346 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 463 transitions. [2021-08-27 16:25:08,834 INFO L704 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-08-27 16:25:08,834 INFO L587 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-08-27 16:25:08,834 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:25:08,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 347 states and 463 transitions. [2021-08-27 16:25:08,836 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-08-27 16:25:08,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:08,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:08,838 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:08,838 INFO L843 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, 1] [2021-08-27 16:25:08,839 INFO L791 eck$LassoCheckResult]: Stem: 1435#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1364#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 1346#L861 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; 1347#L869 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 1382#L957 assume 0 != main_~tmp~9; 1322#L933 ~switchedOnBeforeTS~0 := 0; 1289#L525 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1290#L546-1 [2021-08-27 16:25:08,840 INFO L793 eck$LassoCheckResult]: Loop: 1290#L546-1 assume !false; 1408#L782 assume test_~splverifierCounter~0 < 4; 1436#L783 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 1579#L791 assume !(0 != test_~tmp~8); 1336#L791-1 test_~tmp___0~2 := test_#t~nondet77;havoc test_#t~nondet77; 1337#L801 assume !(0 != test_~tmp___0~2); 1367#L801-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1368#L811 assume 0 != test_~tmp___2~0; 1307#L817-2 havoc __utac_acc__Specification5_spec__2_#t~ret52;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1308#L710 __utac_acc__Specification5_spec__2_#t~ret52 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret52;havoc __utac_acc__Specification5_spec__2_#t~ret52; 1399#L535 assume !(0 != ~pumpRunning~0); 1417#L582 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1343#L640 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret55, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1344#L614-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1415#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1409#L137-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 1380#L759-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1381#L759-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1410#L765-1 processEnvironment__wrappee__methaneQuery_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret55;havoc processEnvironment__wrappee__methaneQuery_#t~ret55; 1402#L618-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1314#L589 havoc __utac_acc__Specification5_spec__3_#t~ret53, __utac_acc__Specification5_spec__3_#t~ret54, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;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; 1315#L124 __utac_acc__Specification5_spec__3_#t~ret53 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret53;havoc __utac_acc__Specification5_spec__3_#t~ret53; 1357#L546 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1358#L710-1 __utac_acc__Specification5_spec__3_#t~ret54 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret54;havoc __utac_acc__Specification5_spec__3_#t~ret54; 1443#L550 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1290#L546-1 [2021-08-27 16:25:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:25:08,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975927740] [2021-08-27 16:25:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,896 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1863698731, now seen corresponding path program 1 times [2021-08-27 16:25:08,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975706735] [2021-08-27 16:25:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,957 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:08,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1927124913, now seen corresponding path program 1 times [2021-08-27 16:25:08,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:08,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443119036] [2021-08-27 16:25:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:08,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:09,005 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:09,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:50,744 WARN L207 SmtUtils]: Spent 41.32 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:26:33,324 WARN L207 SmtUtils]: Spent 20.38 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:26:33,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:26:33 BoogieIcfgContainer [2021-08-27 16:26:33,426 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:26:33,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:26:33,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:26:33,432 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:26:33,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:07" (3/4) ... [2021-08-27 16:26:33,435 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:26:33,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:26:33,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:26:33,514 INFO L168 Benchmark]: Toolchain (without parser) took 87821.48 ms. Allocated memory was 50.3 MB in the beginning and 117.4 MB in the end (delta: 67.1 MB). Free memory was 26.2 MB in the beginning and 41.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,515 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.5 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:26:33,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.04 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 39.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.85 ms. Allocated memory is still 62.9 MB. Free memory was 39.0 MB in the beginning and 35.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,516 INFO L168 Benchmark]: Boogie Preprocessor took 49.28 ms. Allocated memory is still 62.9 MB. Free memory was 35.0 MB in the beginning and 32.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,517 INFO L168 Benchmark]: RCFGBuilder took 978.73 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 50.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,517 INFO L168 Benchmark]: BuchiAutomizer took 86240.83 ms. Allocated memory was 75.5 MB in the beginning and 117.4 MB in the end (delta: 41.9 MB). Free memory was 50.7 MB in the beginning and 43.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,518 INFO L168 Benchmark]: Witness Printer took 86.65 ms. Allocated memory is still 117.4 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:33,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.5 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.04 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 39.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.85 ms. Allocated memory is still 62.9 MB. Free memory was 39.0 MB in the beginning and 35.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.28 ms. Allocated memory is still 62.9 MB. Free memory was 35.0 MB in the beginning and 32.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 978.73 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 50.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86240.83 ms. Allocated memory was 75.5 MB in the beginning and 117.4 MB in the end (delta: 41.9 MB). Free memory was 50.7 MB in the beginning and 43.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. * Witness Printer took 86.65 ms. Allocated memory is still 117.4 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 347 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 85.4s. Construction of modules took 0.2s. 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 63.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 150 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 347 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 610 SDtfs, 1303 SDslu, 631 SDs, 0 SdLazy, 127 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 256.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 781]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30348} State at position 1 is {NULL=0, NULL=0, NULL=30361, NULL=0, NULL=30348, NULL=30363, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@267b260a=0, NULL=30376, methaneLevelCritical=0, retValue_acc=1, NULL=0, retValue_acc=0, NULL=30357, tmp=0, tmp___1=0, NULL=0, NULL=30364, NULL=30365, cleanupTimeShifts=4, NULL=30355, NULL=30349, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4347ee49=0, NULL=0, NULL=30367, NULL=30371, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=30352, NULL=0, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e607e6f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d3df921=0, head=0, tmp=0, tmp=1, NULL=0, NULL=0, NULL=30359, tmp=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26a35baa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60cca17d=0, NULL=0, NULL=30353, NULL=30354, NULL=30368, NULL=30351, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76feaa3=0, tmp___0=0, tmp=1, NULL=0, NULL=0, NULL=0, switchedOnBeforeTS=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43e5538c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65e97c5f=55, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ad73971=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=30366, \result=0, NULL=0, NULL=30369, retValue_acc=0, NULL=30375, tmp___0=0, NULL=30370, \result=0, NULL=30356, NULL=0, NULL=30358, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54f401b3=0, NULL=30360, NULL=30373, tmp___2=55, splverifierCounter=0, NULL=0, NULL=30374, NULL=30372, NULL=30350, NULL=30362, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L321] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L519] int switchedOnBeforeTS ; [L572] int pumpRunning = 0; [L573] int systemActive = 1; [L874] int cleanupTimeShifts = 4; [L948] int retValue_acc ; [L949] int tmp ; [L865] int retValue_acc ; [L868] retValue_acc = 1 [L869] return (retValue_acc); [L955] tmp = valid_product() [L957] COND TRUE \read(tmp) [L524] switchedOnBeforeTS = 0 [L772] int splverifierCounter ; [L773] int tmp ; [L774] int tmp___0 ; [L775] int tmp___1 ; [L776] int tmp___2 ; [L779] splverifierCounter = 0 Loop: [L781] COND TRUE 1 [L783] COND TRUE splverifierCounter < 4 [L789] tmp = __VERIFIER_nondet_int() [L791] COND FALSE !(\read(tmp)) [L799] tmp___0 = __VERIFIER_nondet_int() [L801] COND FALSE !(\read(tmp___0)) [L809] tmp___2 = __VERIFIER_nondet_int() [L811] COND TRUE \read(tmp___2) [L706] int retValue_acc ; [L709] retValue_acc = pumpRunning [L710] return (retValue_acc); [L533] switchedOnBeforeTS = isPumpRunning() [L582] COND FALSE !(\read(pumpRunning)) [L589] COND TRUE \read(systemActive) [L637] int tmp ; [L640] COND FALSE !(\read(pumpRunning)) [L611] int tmp ; [L614] COND TRUE ! pumpRunning [L751] int retValue_acc ; [L752] int tmp ; [L753] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L757] tmp = isHighWaterSensorDry() [L759] COND TRUE \read(tmp) [L760] tmp___0 = 0 [L764] retValue_acc = tmp___0 [L765] return (retValue_acc); [L616] tmp = isHighWaterLevel() [L618] COND FALSE !(\read(tmp)) [L539] int tmp ; [L540] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L544] tmp = getWaterLevel() [L546] COND TRUE tmp != 2 [L706] int retValue_acc ; [L709] retValue_acc = pumpRunning [L710] return (retValue_acc); [L548] tmp___0 = isPumpRunning() [L550] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:26:33,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...