./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_spec3_product59.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 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:26:20,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:26:20,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:26:20,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:26:20,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:26:20,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:26:20,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:26:20,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:26:20,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:26:20,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:26:20,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:26:20,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:26:20,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:26:20,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:26:20,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:26:20,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:26:20,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:26:20,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:26:20,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:26:20,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:26:20,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:26:20,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:26:20,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:26:20,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:26:20,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:26:20,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:26:20,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:26:20,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:26:20,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:26:20,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:26:20,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:26:20,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:26:20,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:26:20,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:26:20,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:26:20,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:26:20,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:26:20,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:26:20,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:26:20,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:26:20,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:26:20,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:26:20,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:26:20,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:26:20,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:26:20,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:26:20,310 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:26:20,310 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:26:20,310 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:26:20,310 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:26:20,311 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:26:20,311 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:26:20,312 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:26:20,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:26:20,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:26:20,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:26:20,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:26:20,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:26:20,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:26:20,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:26:20,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:26:20,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:26:20,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:26:20,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:26:20,314 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:26:20,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:26:20,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:26:20,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:26:20,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:26:20,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:26:20,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:26:20,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:26:20,317 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:26:20,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 [2021-07-06 20:26:20,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:26:20,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:26:20,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:26:20,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:26:20,633 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:26:20,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2021-07-06 20:26:20,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dc7c690/7583ba2a44474beaa405936cc9359ed9/FLAG1d50dd326 [2021-07-06 20:26:21,232 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:26:21,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2021-07-06 20:26:21,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dc7c690/7583ba2a44474beaa405936cc9359ed9/FLAG1d50dd326 [2021-07-06 20:26:21,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35dc7c690/7583ba2a44474beaa405936cc9359ed9 [2021-07-06 20:26:21,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:26:21,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:26:21,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:26:21,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:26:21,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:26:21,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:26:21" (1/1) ... [2021-07-06 20:26:21,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a55aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:21, skipping insertion in model container [2021-07-06 20:26:21,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:26:21" (1/1) ... [2021-07-06 20:26:21,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:26:21,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:26:21,860 WARN L224 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_spec3_product59.cil.c[14819,14832] [2021-07-06 20:26:21,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:26:21,917 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:26:21,997 WARN L224 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_spec3_product59.cil.c[14819,14832] [2021-07-06 20:26:22,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:26:22,046 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:26:22,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22 WrapperNode [2021-07-06 20:26:22,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:26:22,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:26:22,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:26:22,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:26:22,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:26:22,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:26:22,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:26:22,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:26:22,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:26:22,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:26:22,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:26:22,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:26:22,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (1/1) ... [2021-07-06 20:26:22,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:26:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:26:22,274 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) [2021-07-06 20:26:22,292 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 [2021-07-06 20:26:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:26:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:26:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:26:22,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:26:23,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:26:23,096 INFO L299 CfgBuilder]: Removed 202 assume(true) statements. [2021-07-06 20:26:23,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:23 BoogieIcfgContainer [2021-07-06 20:26:23,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:26:23,098 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:26:23,098 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:26:23,101 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:26:23,102 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:23,102 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:26:21" (1/3) ... [2021-07-06 20:26:23,103 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5354a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:26:23, skipping insertion in model container [2021-07-06 20:26:23,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:23,103 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:22" (2/3) ... [2021-07-06 20:26:23,103 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5354a6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:26:23, skipping insertion in model container [2021-07-06 20:26:23,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:23,103 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:23" (3/3) ... [2021-07-06 20:26:23,105 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2021-07-06 20:26:23,140 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:26:23,140 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:26:23,140 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:26:23,140 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:26:23,140 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:26:23,141 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:26:23,141 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:26:23,141 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:26:23,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 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) [2021-07-06 20:26:23,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-07-06 20:26:23,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:23,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:23,184 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:23,184 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:23,184 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:26:23,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 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) [2021-07-06 20:26:23,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-07-06 20:26:23,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:23,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:23,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:23,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:23,200 INFO L791 eck$LassoCheckResult]: Stem: 106#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 5#L-1true havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 3#L643true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 19#L651true main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 25#L607true assume 0 != main_~tmp~3; 123#L580true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 22#L673-1true [2021-07-06 20:26:23,201 INFO L793 eck$LassoCheckResult]: Loop: 22#L673-1true assume !false; 100#L713true assume test_~splverifierCounter~0 < 4; 47#L714true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 57#L722true assume !(0 != test_~tmp~5); 63#L722-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 107#L732true assume !(0 != test_~tmp___0~1); 109#L732-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 13#L742true assume 0 != test_~tmp___2~0; 133#L748-1true assume !(0 != ~pumpRunning~0); 4#L778true assume !(0 != ~systemActive~0); 89#L785true havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 116#L459-2true __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 67#L667true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 22#L673-1true [2021-07-06 20:26:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:26:23,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:23,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318063341] [2021-07-06 20:26:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:23,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:23,415 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:23,522 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:23,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:23,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1670509186, now seen corresponding path program 1 times [2021-07-06 20:26:23,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:23,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520001943] [2021-07-06 20:26:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:23,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:23,597 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:23,604 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:23,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash 43769752, now seen corresponding path program 1 times [2021-07-06 20:26:23,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:23,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518010399] [2021-07-06 20:26:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:23,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:23,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:23,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:23,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:23,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:26:23,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:23,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:23,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518010399] [2021-07-06 20:26:23,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518010399] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:23,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:23,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:26:23,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323651779] [2021-07-06 20:26:23,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:23,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:26:23,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:23,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:26:23,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:26:23,860 INFO L87 Difference]: Start difference. First operand has 140 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 139 states have internal predecessors, (210), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-07-06 20:26:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:24,112 INFO L93 Difference]: Finished difference Result 330 states and 471 transitions. [2021-07-06 20:26:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:26:24,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 471 transitions. [2021-07-06 20:26:24,126 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 213 [2021-07-06 20:26:24,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 309 states and 450 transitions. [2021-07-06 20:26:24,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 309 [2021-07-06 20:26:24,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 309 [2021-07-06 20:26:24,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 309 states and 450 transitions. [2021-07-06 20:26:24,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:24,150 INFO L681 BuchiCegarLoop]: Abstraction has 309 states and 450 transitions. [2021-07-06 20:26:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states and 450 transitions. [2021-07-06 20:26:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 180. [2021-07-06 20:26:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 180 states have (on average 1.45) internal successors, (261), 179 states have internal predecessors, (261), 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) [2021-07-06 20:26:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 261 transitions. [2021-07-06 20:26:24,202 INFO L704 BuchiCegarLoop]: Abstraction has 180 states and 261 transitions. [2021-07-06 20:26:24,203 INFO L587 BuchiCegarLoop]: Abstraction has 180 states and 261 transitions. [2021-07-06 20:26:24,203 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:26:24,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 180 states and 261 transitions. [2021-07-06 20:26:24,209 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 124 [2021-07-06 20:26:24,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:24,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:24,209 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:24,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:24,210 INFO L791 eck$LassoCheckResult]: Stem: 610#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 492#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 488#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 489#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 516#L607 assume 0 != main_~tmp~3; 523#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 514#L673-1 [2021-07-06 20:26:24,210 INFO L793 eck$LassoCheckResult]: Loop: 514#L673-1 assume !false; 518#L713 assume test_~splverifierCounter~0 < 4; 553#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 554#L722 assume !(0 != test_~tmp~5); 573#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 580#L732 assume !(0 != test_~tmp___0~1); 609#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 503#L742 assume 0 != test_~tmp___2~0; 504#L748-1 assume !(0 != ~pumpRunning~0); 490#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 491#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 556#L810-1 assume !(0 == ~pumpRunning~0); 558#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 602#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 586#L667 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 514#L673-1 [2021-07-06 20:26:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:26:24,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172051156] [2021-07-06 20:26:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,243 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,282 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1972735879, now seen corresponding path program 1 times [2021-07-06 20:26:24,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503243435] [2021-07-06 20:26:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:24,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:24,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:24,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:24,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:24,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503243435] [2021-07-06 20:26:24,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503243435] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:24,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:24,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:26:24,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679901453] [2021-07-06 20:26:24,307 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:26:24,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:24,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:26:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:26:24,308 INFO L87 Difference]: Start difference. First operand 180 states and 261 transitions. cyclomatic complexity: 84 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-07-06 20:26:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:24,372 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2021-07-06 20:26:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:26:24,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 310 transitions. [2021-07-06 20:26:24,375 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-07-06 20:26:24,376 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 310 transitions. [2021-07-06 20:26:24,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2021-07-06 20:26:24,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2021-07-06 20:26:24,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 310 transitions. [2021-07-06 20:26:24,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:24,378 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-07-06 20:26:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 310 transitions. [2021-07-06 20:26:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-07-06 20:26:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.3777777777777778) internal successors, (310), 224 states have internal predecessors, (310), 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) [2021-07-06 20:26:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 310 transitions. [2021-07-06 20:26:24,385 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-07-06 20:26:24,385 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-07-06 20:26:24,385 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:26:24,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 310 transitions. [2021-07-06 20:26:24,387 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-07-06 20:26:24,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:24,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:24,388 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:24,388 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] [2021-07-06 20:26:24,388 INFO L791 eck$LassoCheckResult]: Stem: 1031#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 903#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 899#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 900#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 929#L607 assume 0 != main_~tmp~3; 936#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 927#L673-1 [2021-07-06 20:26:24,388 INFO L793 eck$LassoCheckResult]: Loop: 927#L673-1 assume !false; 931#L713 assume test_~splverifierCounter~0 < 4; 969#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 970#L722 assume !(0 != test_~tmp~5); 988#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 994#L732 assume !(0 != test_~tmp___0~1); 1028#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1033#L742 assume 0 != test_~tmp___2~0; 1095#L748-1 assume !(0 != ~pumpRunning~0); 901#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 902#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 972#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 973#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 989#L504-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 951#L956-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 952#L956-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 924#L962-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 925#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1020#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1021#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1001#L667 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 927#L673-1 [2021-07-06 20:26:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:26:24,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928309734] [2021-07-06 20:26:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,424 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,450 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,459 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:24,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1765215501, now seen corresponding path program 1 times [2021-07-06 20:26:24,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857604355] [2021-07-06 20:26:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,465 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,468 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1309144307, now seen corresponding path program 1 times [2021-07-06 20:26:24,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824127231] [2021-07-06 20:26:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:24,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:24,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:24,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:24,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:24,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824127231] [2021-07-06 20:26:24,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824127231] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:24,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:24,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:26:24,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864597216] [2021-07-06 20:26:24,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:24,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-07-06 20:26:24,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:26:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:26:24,668 INFO L87 Difference]: Start difference. First operand 225 states and 310 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-07-06 20:26:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:24,821 INFO L93 Difference]: Finished difference Result 771 states and 1066 transitions. [2021-07-06 20:26:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:26:24,822 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 771 states and 1066 transitions. [2021-07-06 20:26:24,827 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 575 [2021-07-06 20:26:24,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 771 states to 771 states and 1066 transitions. [2021-07-06 20:26:24,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 771 [2021-07-06 20:26:24,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 771 [2021-07-06 20:26:24,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 771 states and 1066 transitions. [2021-07-06 20:26:24,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:24,834 INFO L681 BuchiCegarLoop]: Abstraction has 771 states and 1066 transitions. [2021-07-06 20:26:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states and 1066 transitions. [2021-07-06 20:26:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 444. [2021-07-06 20:26:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 444 states have (on average 1.3558558558558558) internal successors, (602), 443 states have internal predecessors, (602), 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) [2021-07-06 20:26:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 602 transitions. [2021-07-06 20:26:24,855 INFO L704 BuchiCegarLoop]: Abstraction has 444 states and 602 transitions. [2021-07-06 20:26:24,856 INFO L587 BuchiCegarLoop]: Abstraction has 444 states and 602 transitions. [2021-07-06 20:26:24,858 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:26:24,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 444 states and 602 transitions. [2021-07-06 20:26:24,860 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 316 [2021-07-06 20:26:24,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:24,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:24,863 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:24,863 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] [2021-07-06 20:26:24,863 INFO L791 eck$LassoCheckResult]: Stem: 2064#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1917#L-1 havoc main_#res;havoc main_#t~ret52, main_~retValue_acc~7, main_~tmp~3;havoc main_~retValue_acc~7;havoc main_~tmp~3; 1913#L643 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1914#L651 main_#t~ret52 := valid_product_#res;main_~tmp~3 := main_#t~ret52;havoc main_#t~ret52; 1942#L607 assume 0 != main_~tmp~3; 1951#L580 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2075#L673-1 [2021-07-06 20:26:24,864 INFO L793 eck$LassoCheckResult]: Loop: 2075#L673-1 assume !false; 2222#L713 assume test_~splverifierCounter~0 < 4; 1984#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1985#L722 assume !(0 != test_~tmp~5); 2005#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 2013#L732 assume !(0 != test_~tmp___0~1); 2065#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1929#L742 assume 0 != test_~tmp___2~0; 1930#L748-1 assume !(0 != ~pumpRunning~0); 2344#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 2076#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1989#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1990#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 2006#L504-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1966#L956-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1967#L956-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1937#L962-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1938#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 2044#L785 havoc __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_#t~ret56, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 2284#L459-2 __utac_acc__Specification3_spec__1_#t~ret54 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 2283#L667 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 2282#L491 __utac_acc__Specification3_spec__1_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret55;havoc __utac_acc__Specification3_spec__1_#t~ret55; 2280#L673 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2075#L673-1 [2021-07-06 20:26:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,869 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-07-06 20:26:24,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46200234] [2021-07-06 20:26:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,910 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,942 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,954 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,956 INFO L82 PathProgramCache]: Analyzing trace with hash 139994341, now seen corresponding path program 1 times [2021-07-06 20:26:24,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524097346] [2021-07-06 20:26:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,968 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:24,973 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:24,977 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:24,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:24,978 INFO L82 PathProgramCache]: Analyzing trace with hash 337747583, now seen corresponding path program 1 times [2021-07-06 20:26:24,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:24,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130827703] [2021-07-06 20:26:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:24,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:25,009 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:25,039 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:25,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:25,194 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-07-06 20:26:25,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:25,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-06 20:27:07,662 WARN L205 SmtUtils]: Spent 42.40 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:27:07,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:27:07,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:27:29,320 WARN L205 SmtUtils]: Spent 21.58 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:27:29,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:27:29 BoogieIcfgContainer [2021-07-06 20:27:29,488 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:27:29,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:27:29,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:27:29,489 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:27:29,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:23" (3/4) ... [2021-07-06 20:27:29,492 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:27:29,542 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:27:29,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:27:29,543 INFO L168 Benchmark]: Toolchain (without parser) took 67989.00 ms. Allocated memory was 60.8 MB in the beginning and 109.1 MB in the end (delta: 48.2 MB). Free memory was 43.7 MB in the beginning and 29.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,543 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 29.5 MB in the beginning and 29.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:27:29,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.44 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 31.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.12 ms. Allocated memory is still 60.8 MB. Free memory was 31.7 MB in the beginning and 41.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,544 INFO L168 Benchmark]: Boogie Preprocessor took 78.91 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 38.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,544 INFO L168 Benchmark]: RCFGBuilder took 866.84 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.3 MB in the beginning and 33.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,545 INFO L168 Benchmark]: BuchiAutomizer took 66389.98 ms. Allocated memory was 73.4 MB in the beginning and 109.1 MB in the end (delta: 35.7 MB). Free memory was 32.8 MB in the beginning and 31.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,545 INFO L168 Benchmark]: Witness Printer took 53.41 ms. Allocated memory is still 109.1 MB. Free memory was 31.1 MB in the beginning and 29.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:29,547 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 48.2 MB. Free memory was 29.5 MB in the beginning and 29.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 493.44 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 31.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.12 ms. Allocated memory is still 60.8 MB. Free memory was 31.7 MB in the beginning and 41.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.91 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 38.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 866.84 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.3 MB in the beginning and 33.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 66389.98 ms. Allocated memory was 73.4 MB in the beginning and 109.1 MB in the end (delta: 35.7 MB). Free memory was 32.8 MB in the beginning and 31.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. * Witness Printer took 53.41 ms. Allocated memory is still 109.1 MB. Free memory was 31.1 MB in the beginning and 29.0 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 444 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 66.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 65.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 69.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 456 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 444 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 663 SDtfs, 1690 SDslu, 1827 SDs, 0 SdLazy, 179 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 267.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 712]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26809} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16008b9c=0, NULL=26809, NULL=0, methaneLevelCritical=0, NULL=26822, tmp=0, NULL=0, NULL=26826, tmp___1=0, NULL=26833, NULL=0, NULL=26824, NULL=26814, cleanupTimeShifts=4, tmp=0, NULL=26827, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53f79d95=0, retValue_acc=1, tmp=1, NULL=26818, NULL=0, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@412d11bf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@363b6cb4=0, NULL=0, NULL=0, retValue_acc=1, NULL=26811, tmp___0=0, NULL=26828, tmp=1, NULL=26835, head=0, NULL=0, NULL=0, NULL=26816, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bd84e2a=0, NULL=0, NULL=0, NULL=26819, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5835bd33=0, NULL=0, retValue_acc=0, NULL=26821, NULL=0, NULL=26823, NULL=26812, tmp___0=0, NULL=0, NULL=26817, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2021175=0, NULL=0, tmp___0=1, NULL=26810, NULL=26829, NULL=26834, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, \result=0, NULL=26825, NULL=26836, NULL=26820, \result=0, NULL=26837, NULL=0, NULL=26813, retValue_acc=1, NULL=26830, tmp___2=62, splverifierCounter=0, NULL=0, \result=0, NULL=26832, NULL=26815, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4be29127=62, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36663770=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d1244c5=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61df1503=0, NULL=26831} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 Loop: [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND FALSE !(\read(tmp)) [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND TRUE \read(tmp___2) [L778] COND FALSE !(\read(pumpRunning)) [L785] COND TRUE \read(systemActive) [L833] int tmp ; [L836] COND FALSE !(\read(pumpRunning)) [L807] int tmp ; [L810] COND TRUE ! pumpRunning [L948] int retValue_acc ; [L949] int tmp ; [L950] int tmp___0 ; [L496] int retValue_acc ; [L499] COND TRUE waterLevel < 2 [L500] retValue_acc = 1 [L501] return (retValue_acc); [L954] tmp = isHighWaterSensorDry() [L956] COND TRUE \read(tmp) [L957] tmp___0 = 0 [L961] retValue_acc = tmp___0 [L962] return (retValue_acc); [L812] tmp = isHighWaterLevel() [L814] COND FALSE !(\read(tmp)) [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L671] tmp___0 = getWaterLevel() [L673] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:27:29,621 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...