./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product40.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_spec5_product40.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1dccf015ca242d6c8f0727566f3e9418ec10384 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:35:21,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:35:21,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:35:21,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:35:21,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:35:21,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:35:21,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:35:21,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:35:21,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:35:21,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:35:21,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:35:21,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:35:21,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:35:21,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:35:21,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:35:21,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:35:21,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:35:21,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:35:21,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:35:21,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:35:21,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:35:21,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:35:21,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:35:21,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:35:21,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:35:21,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:35:21,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:35:21,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:35:21,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:35:21,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:35:21,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:35:21,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:35:21,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:35:21,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:35:21,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:35:21,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:35:21,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:35:21,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:35:21,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:35:21,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:35:21,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:35:21,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:35:21,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:35:21,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:35:21,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:35:21,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:35:21,300 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:35:21,301 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:35:21,301 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:35:21,301 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:35:21,301 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:35:21,301 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:35:21,302 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:35:21,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:35:21,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:35:21,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:35:21,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:35:21,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:35:21,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:35:21,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:35:21,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:35:21,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:35:21,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:35:21,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:35:21,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:35:21,305 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:35:21,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1dccf015ca242d6c8f0727566f3e9418ec10384 [2021-07-06 20:35:21,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:35:21,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:35:21,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:35:21,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:35:21,537 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:35:21,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c [2021-07-06 20:35:21,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7851d2565/914cb19b4610445186d1333abc704d36/FLAGae510d7a1 [2021-07-06 20:35:21,958 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:35:21,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c [2021-07-06 20:35:21,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7851d2565/914cb19b4610445186d1333abc704d36/FLAGae510d7a1 [2021-07-06 20:35:22,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7851d2565/914cb19b4610445186d1333abc704d36 [2021-07-06 20:35:22,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:35:22,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:35:22,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:35:22,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:35:22,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:35:22,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af72a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22, skipping insertion in model container [2021-07-06 20:35:22,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:35:22,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:35:22,579 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_spec5_product40.cil.c[16774,16787] [2021-07-06 20:35:22,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:35:22,602 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:35:22,650 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_spec5_product40.cil.c[16774,16787] [2021-07-06 20:35:22,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:35:22,680 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:35:22,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22 WrapperNode [2021-07-06 20:35:22,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:35:22,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:35:22,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:35:22,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:35:22,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:35:22,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:35:22,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:35:22,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:35:22,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:35:22,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:35:22,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:35:22,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:35:22,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (1/1) ... [2021-07-06 20:35:22,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:35:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:35:22,833 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 20:35:22,847 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 20:35:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:35:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:35:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:35:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:35:23,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:35:23,439 INFO L299 CfgBuilder]: Removed 176 assume(true) statements. [2021-07-06 20:35:23,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:23 BoogieIcfgContainer [2021-07-06 20:35:23,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:35:23,442 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:35:23,442 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:35:23,444 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:35:23,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:23,444 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:35:22" (1/3) ... [2021-07-06 20:35:23,445 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@664e7c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:35:23, skipping insertion in model container [2021-07-06 20:35:23,445 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:23,445 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:22" (2/3) ... [2021-07-06 20:35:23,446 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@664e7c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:35:23, skipping insertion in model container [2021-07-06 20:35:23,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:23,446 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:23" (3/3) ... [2021-07-06 20:35:23,447 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2021-07-06 20:35:23,476 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:35:23,476 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:35:23,477 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:35:23,477 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:35:23,477 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:35:23,477 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:35:23,477 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:35:23,477 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:35:23,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 20:35:23,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-07-06 20:35:23,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:23,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:23,515 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:23,515 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:23,516 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:35:23,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 20:35:23,520 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-07-06 20:35:23,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:23,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:23,521 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:23,521 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:23,524 INFO L791 eck$LassoCheckResult]: Stem: 76#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #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(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 26#L879true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 33#L887true main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 70#L834true assume 0 != main_~tmp~8; 47#L807true ~switchedOnBeforeTS~0 := 0; 53#L705true havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 107#L726-1true [2021-07-06 20:35:23,529 INFO L793 eck$LassoCheckResult]: Loop: 107#L726-1true assume !false; 31#L273true assume test_~splverifierCounter~0 < 4; 6#L274true test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 17#L282true assume !(0 != test_~tmp~3); 18#L282-1true test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 63#L292true assume !(0 != test_~tmp___0~1); 61#L292-1true test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 118#L302true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 8#L310-1true havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 67#L176true __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 106#L715true assume !(0 != ~pumpRunning~0); 14#L65true assume !(0 != ~systemActive~0); 39#L72true havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 22#L967true __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 105#L726true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 107#L726-1true [2021-07-06 20:35:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:35:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26779958] [2021-07-06 20:35:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:23,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:23,729 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:23,813 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:23,844 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:23,853 INFO L82 PathProgramCache]: Analyzing trace with hash 676826806, now seen corresponding path program 1 times [2021-07-06 20:35:23,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:23,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515706225] [2021-07-06 20:35:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:23,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:23,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:23,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:23,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:23,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:35:23,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:23,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:23,905 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 20:35:23,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:23,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515706225] [2021-07-06 20:35:23,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515706225] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:23,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:23,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:35:23,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722927120] [2021-07-06 20:35:23,911 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:23,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:23,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:35:23,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:35:23,928 INFO L87 Difference]: Start difference. First operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 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 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 20:35:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:23,998 INFO L93 Difference]: Finished difference Result 231 states and 335 transitions. [2021-07-06 20:35:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:35:23,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 335 transitions. [2021-07-06 20:35:24,012 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 150 [2021-07-06 20:35:24,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 217 states and 320 transitions. [2021-07-06 20:35:24,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-07-06 20:35:24,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-07-06 20:35:24,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 320 transitions. [2021-07-06 20:35:24,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:24,024 INFO L681 BuchiCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-07-06 20:35:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 320 transitions. [2021-07-06 20:35:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-07-06 20:35:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 215 states have (on average 1.4744186046511627) internal successors, (317), 214 states have internal predecessors, (317), 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 20:35:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2021-07-06 20:35:24,062 INFO L704 BuchiCegarLoop]: Abstraction has 215 states and 317 transitions. [2021-07-06 20:35:24,062 INFO L587 BuchiCegarLoop]: Abstraction has 215 states and 317 transitions. [2021-07-06 20:35:24,062 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:35:24,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 215 states and 317 transitions. [2021-07-06 20:35:24,063 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-07-06 20:35:24,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:24,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:24,064 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:24,064 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:24,064 INFO L791 eck$LassoCheckResult]: Stem: 460#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #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(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 371#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 372#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 398#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 407#L834 assume 0 != main_~tmp~8; 425#L807 ~switchedOnBeforeTS~0 := 0; 426#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 433#L726-1 [2021-07-06 20:35:24,065 INFO L793 eck$LassoCheckResult]: Loop: 433#L726-1 assume !false; 404#L273 assume test_~splverifierCounter~0 < 4; 365#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 366#L282 assume !(0 != test_~tmp~3); 362#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 381#L292 assume !(0 != test_~tmp___0~1); 440#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 441#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 500#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 506#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 492#L715 assume !(0 != ~pumpRunning~0); 377#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 378#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 520#L97-1 assume !(0 == ~pumpRunning~0); 519#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 518#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 516#L726 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 433#L726-1 [2021-07-06 20:35:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:35:24,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590503880] [2021-07-06 20:35:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,090 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,112 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash -549788339, now seen corresponding path program 1 times [2021-07-06 20:35:24,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040519856] [2021-07-06 20:35:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:24,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:24,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:35:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:24,130 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 20:35:24,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:24,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040519856] [2021-07-06 20:35:24,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040519856] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:24,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:24,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:35:24,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056636817] [2021-07-06 20:35:24,131 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:24,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:24,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:35:24,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:35:24,132 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:35:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:24,196 INFO L93 Difference]: Finished difference Result 314 states and 439 transitions. [2021-07-06 20:35:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:35:24,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 314 states and 439 transitions. [2021-07-06 20:35:24,199 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-07-06 20:35:24,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 314 states to 314 states and 439 transitions. [2021-07-06 20:35:24,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 314 [2021-07-06 20:35:24,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-07-06 20:35:24,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 314 states and 439 transitions. [2021-07-06 20:35:24,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:24,202 INFO L681 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-07-06 20:35:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states and 439 transitions. [2021-07-06 20:35:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-07-06 20:35:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 314 states have (on average 1.3980891719745223) internal successors, (439), 313 states have internal predecessors, (439), 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 20:35:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 439 transitions. [2021-07-06 20:35:24,208 INFO L704 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-07-06 20:35:24,208 INFO L587 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-07-06 20:35:24,208 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:35:24,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 314 states and 439 transitions. [2021-07-06 20:35:24,210 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-07-06 20:35:24,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:24,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:24,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:24,211 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 20:35:24,211 INFO L791 eck$LassoCheckResult]: Stem: 993#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #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(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 906#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 907#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 932#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 944#L834 assume 0 != main_~tmp~8; 961#L807 ~switchedOnBeforeTS~0 := 0; 962#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 915#L726-1 [2021-07-06 20:35:24,211 INFO L793 eck$LassoCheckResult]: Loop: 915#L726-1 assume !false; 939#L273 assume test_~splverifierCounter~0 < 4; 940#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 1189#L282 assume !(0 != test_~tmp~3); 1187#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 1186#L292 assume !(0 != test_~tmp___0~1); 1184#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 1183#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1016#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1181#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 1012#L715 assume !(0 != ~pumpRunning~0); 912#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 913#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1022#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1195#L975-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1194#L980-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1193#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1192#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 986#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 987#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 970#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 924#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 925#L726 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 915#L726-1 [2021-07-06 20:35:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:35:24,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133858697] [2021-07-06 20:35:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,231 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,249 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1721068121, now seen corresponding path program 1 times [2021-07-06 20:35:24,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422957120] [2021-07-06 20:35:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:24,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:24,273 INFO L142 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-07-06 20:35:24,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:24,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:24,288 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 20:35:24,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:24,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422957120] [2021-07-06 20:35:24,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422957120] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:24,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:24,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:35:24,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131586434] [2021-07-06 20:35:24,290 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:24,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:24,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:35:24,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:35:24,291 INFO L87 Difference]: Start difference. First operand 314 states and 439 transitions. cyclomatic complexity: 128 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:35:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:24,445 INFO L93 Difference]: Finished difference Result 1319 states and 1859 transitions. [2021-07-06 20:35:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:35:24,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1319 states and 1859 transitions. [2021-07-06 20:35:24,452 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 926 [2021-07-06 20:35:24,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1319 states to 1319 states and 1859 transitions. [2021-07-06 20:35:24,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1319 [2021-07-06 20:35:24,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1319 [2021-07-06 20:35:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1319 states and 1859 transitions. [2021-07-06 20:35:24,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:24,459 INFO L681 BuchiCegarLoop]: Abstraction has 1319 states and 1859 transitions. [2021-07-06 20:35:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states and 1859 transitions. [2021-07-06 20:35:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 615. [2021-07-06 20:35:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 615 states have (on average 1.3772357723577235) internal successors, (847), 614 states have internal predecessors, (847), 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 20:35:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 847 transitions. [2021-07-06 20:35:24,471 INFO L704 BuchiCegarLoop]: Abstraction has 615 states and 847 transitions. [2021-07-06 20:35:24,471 INFO L587 BuchiCegarLoop]: Abstraction has 615 states and 847 transitions. [2021-07-06 20:35:24,471 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:35:24,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 615 states and 847 transitions. [2021-07-06 20:35:24,473 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 442 [2021-07-06 20:35:24,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:24,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:24,473 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:24,473 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:24,474 INFO L791 eck$LassoCheckResult]: Stem: 2654#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #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(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2560#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 2561#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2586#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 2598#L834 assume 0 != main_~tmp~8; 2617#L807 ~switchedOnBeforeTS~0 := 0; 2618#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2625#L726-1 [2021-07-06 20:35:24,474 INFO L793 eck$LassoCheckResult]: Loop: 2625#L726-1 assume !false; 2885#L273 assume test_~splverifierCounter~0 < 4; 2864#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 2860#L282 assume !(0 != test_~tmp~3); 2856#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 2854#L292 assume !(0 != test_~tmp___0~1); 2851#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 2846#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2848#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2862#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 2827#L715 assume !(0 != ~pumpRunning~0); 2826#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2825#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2772#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2820#L975-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2786#L980-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 2819#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 2818#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2817#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2761#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2760#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2893#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 2892#L726 assume 2 != __utac_acc__Specification5_spec__3_~tmp~7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2891#L176-1 __utac_acc__Specification5_spec__3_#t~ret68 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret68;havoc __utac_acc__Specification5_spec__3_#t~ret68; 2890#L730 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2625#L726-1 [2021-07-06 20:35:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:35:24,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845308922] [2021-07-06 20:35:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,491 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,505 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,510 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash 384043252, now seen corresponding path program 1 times [2021-07-06 20:35:24,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001241792] [2021-07-06 20:35:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,515 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,517 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,520 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:24,520 INFO L82 PathProgramCache]: Analyzing trace with hash 320617070, now seen corresponding path program 1 times [2021-07-06 20:35:24,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:24,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746108042] [2021-07-06 20:35:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:24,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,558 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:24,574 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:24,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:24,735 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-06 20:35:24,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:24,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-07-06 20:36:05,987 WARN L205 SmtUtils]: Spent 41.14 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:36:06,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:06,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:36:25,601 WARN L205 SmtUtils]: Spent 19.56 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:36:25,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:36:25 BoogieIcfgContainer [2021-07-06 20:36:25,724 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:36:25,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:36:25,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:36:25,724 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:36:25,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:23" (3/4) ... [2021-07-06 20:36:25,726 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:36:25,755 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:36:25,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:36:25,756 INFO L168 Benchmark]: Toolchain (without parser) took 63426.17 ms. Allocated memory was 58.7 MB in the beginning and 111.1 MB in the end (delta: 52.4 MB). Free memory was 36.4 MB in the beginning and 31.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,757 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:36:25,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.54 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.2 MB in the beginning and 49.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 75.5 MB. Free memory was 49.1 MB in the beginning and 45.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,757 INFO L168 Benchmark]: Boogie Preprocessor took 67.87 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 42.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,758 INFO L168 Benchmark]: RCFGBuilder took 632.40 ms. Allocated memory is still 75.5 MB. Free memory was 42.8 MB in the beginning and 40.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,758 INFO L168 Benchmark]: BuchiAutomizer took 62281.97 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 40.7 MB in the beginning and 34.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,758 INFO L168 Benchmark]: Witness Printer took 31.54 ms. Allocated memory is still 111.1 MB. Free memory was 34.1 MB in the beginning and 31.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:25,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.54 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.2 MB in the beginning and 49.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 75.5 MB. Free memory was 49.1 MB in the beginning and 45.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.87 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 42.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 632.40 ms. Allocated memory is still 75.5 MB. Free memory was 42.8 MB in the beginning and 40.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 62281.97 ms. Allocated memory was 75.5 MB in the beginning and 111.1 MB in the end (delta: 35.7 MB). Free memory was 40.7 MB in the beginning and 34.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. * Witness Printer took 31.54 ms. Allocated memory is still 111.1 MB. Free memory was 34.1 MB in the beginning and 31.0 MB in the end (delta: 3.1 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 5 locations. The remainder module has 615 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 62.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 61.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 46.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 706 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 615 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 615 SDtfs, 1011 SDslu, 1003 SDs, 0 SdLazy, 178 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 152.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 272]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=175} State at position 1 is {NULL=0, NULL=0, retValue_acc=1, NULL=175, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3403d50b=0, NULL=201, methaneLevelCritical=0, NULL=189, tmp=0, retValue_acc=0, tmp___1=0, NULL=184, NULL=0, cleanupTimeShifts=4, NULL=198, NULL=0, waterLevel=1, NULL=183, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76213209=0, NULL=0, NULL=188, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a4a9023=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49c4c004=71, NULL=203, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c643560=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a682c84=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17b3ee9c=0, NULL=0, NULL=180, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@157ca6d6=0, NULL=0, tmp___0=0, NULL=202, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5610498b=0, NULL=196, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a3509f=0, head=0, NULL=200, NULL=190, NULL=186, NULL=0, retValue_acc=0, NULL=0, NULL=177, NULL=182, tmp=1, NULL=0, tmp___0=0, NULL=181, NULL=0, tmp=0, switchedOnBeforeTS=0, NULL=193, NULL=199, \result=0, NULL=178, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@581621e7=0, NULL=0, NULL=185, tmp___0=0, NULL=197, \result=0, NULL=192, NULL=176, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=195, tmp___2=71, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=191, retValue_acc=0, NULL=187, NULL=0, NULL=0, NULL=179, NULL=194} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L500] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L699] int switchedOnBeforeTS ; [L748] int cleanupTimeShifts = 4; [L892] int waterLevel = 1; [L893] int methaneLevelCritical = 0; [L825] int retValue_acc ; [L826] int tmp ; [L883] int retValue_acc ; [L886] retValue_acc = 1 [L887] return (retValue_acc); [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L704] switchedOnBeforeTS = 0 [L263] int splverifierCounter ; [L264] int tmp ; [L265] int tmp___0 ; [L266] int tmp___1 ; [L267] int tmp___2 ; [L270] splverifierCounter = 0 Loop: [L272] COND TRUE 1 [L274] COND TRUE splverifierCounter < 4 [L280] tmp = __VERIFIER_nondet_int() [L282] COND FALSE !(\read(tmp)) [L290] tmp___0 = __VERIFIER_nondet_int() [L292] COND FALSE !(\read(tmp___0)) [L300] tmp___2 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp___2) [L254] systemActive = 1 [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L713] switchedOnBeforeTS = isPumpRunning() [L65] COND FALSE !(\read(pumpRunning)) [L72] COND TRUE \read(systemActive) [L120] int tmp ; [L123] COND FALSE !(\read(pumpRunning)) [L94] int tmp ; [L97] COND TRUE ! pumpRunning [L217] int retValue_acc ; [L218] int tmp ; [L219] int tmp___0 ; [L972] int retValue_acc ; [L975] COND TRUE waterLevel < 2 [L976] retValue_acc = 1 [L977] return (retValue_acc); [L223] tmp = isHighWaterSensorDry() [L225] COND TRUE \read(tmp) [L226] tmp___0 = 0 [L230] retValue_acc = tmp___0 [L231] return (retValue_acc); [L99] tmp = isHighWaterLevel() [L101] COND FALSE !(\read(tmp)) [L719] int tmp ; [L720] int tmp___0 ; [L963] int retValue_acc ; [L966] retValue_acc = waterLevel [L967] return (retValue_acc); [L724] tmp = getWaterLevel() [L726] COND TRUE tmp != 2 [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L728] tmp___0 = isPumpRunning() [L730] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:36:25,805 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...