./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product38.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_product38.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 0864dde8f48fe05a4eca6577f28c648eed4bb154 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................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:35:17,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:35:17,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:35:17,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:35:17,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:35:17,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:35:17,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:35:17,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:35:17,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:35:17,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:35:17,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:35:17,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:35:17,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:35:17,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:35:17,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:35:17,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:35:17,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:35:17,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:35:17,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:35:17,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:35:17,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:35:17,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:35:17,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:35:17,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:35:17,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:35:17,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:35:17,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:35:17,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:35:17,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:35:17,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:35:17,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:35:17,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:35:17,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:35:17,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:35:17,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:35:17,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:35:17,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:35:17,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:35:17,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:35:17,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:35:17,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:35:17,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:35:17,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:35:17,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:35:17,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:35:17,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:35:17,582 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:35:17,582 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:35:17,582 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:35:17,583 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:35:17,583 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:35:17,583 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:35:17,584 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:35:17,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:35:17,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:35:17,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:35:17,585 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:35:17,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:35:17,586 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:35:17,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:35:17,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:35:17,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:35:17,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:35:17,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:35:17,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:35:17,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:35:17,588 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:35:17,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0864dde8f48fe05a4eca6577f28c648eed4bb154 [2021-07-06 20:35:17,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:35:17,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:35:17,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:35:17,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:35:17,909 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:35:17,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2021-07-06 20:35:17,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a780e9c/5748e063b72d431fa9eac0e6aabc1719/FLAGf27eeb001 [2021-07-06 20:35:18,357 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:35:18,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2021-07-06 20:35:18,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a780e9c/5748e063b72d431fa9eac0e6aabc1719/FLAGf27eeb001 [2021-07-06 20:35:18,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a780e9c/5748e063b72d431fa9eac0e6aabc1719 [2021-07-06 20:35:18,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:35:18,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:35:18,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:35:18,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:35:18,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:35:18,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f48ab62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18, skipping insertion in model container [2021-07-06 20:35:18,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:35:18,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:35:18,553 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_product38.cil.c[1281,1294] [2021-07-06 20:35:18,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:35:18,719 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:35:18,738 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_product38.cil.c[1281,1294] [2021-07-06 20:35:18,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:35:18,831 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:35:18,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18 WrapperNode [2021-07-06 20:35:18,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:35:18,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:35:18,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:35:18,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:35:18,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:35:18,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:35:18,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:35:18,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:35:18,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:35:18,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:35:18,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:35:18,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:35:18,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (1/1) ... [2021-07-06 20:35:18,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:35:18,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:35:18,989 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 20:35:19,052 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 20:35:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:35:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:35:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:35:19,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:35:19,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:35:19,767 INFO L299 CfgBuilder]: Removed 172 assume(true) statements. [2021-07-06 20:35:19,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:19 BoogieIcfgContainer [2021-07-06 20:35:19,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:35:19,769 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:35:19,769 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:35:19,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:35:19,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:19,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:35:18" (1/3) ... [2021-07-06 20:35:19,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb8841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:35:19, skipping insertion in model container [2021-07-06 20:35:19,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:19,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:35:18" (2/3) ... [2021-07-06 20:35:19,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb8841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:35:19, skipping insertion in model container [2021-07-06 20:35:19,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:35:19,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:19" (3/3) ... [2021-07-06 20:35:19,774 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2021-07-06 20:35:19,805 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:35:19,806 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:35:19,806 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:35:19,806 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:35:19,806 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:35:19,806 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:35:19,806 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:35:19,806 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:35:19,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 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 20:35:19,833 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-07-06 20:35:19,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:19,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:19,838 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:19,838 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:19,838 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:35:19,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 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 20:35:19,842 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-07-06 20:35:19,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:19,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:19,843 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:19,843 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:19,846 INFO L791 eck$LassoCheckResult]: Stem: 95#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 9#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 111#L886true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 115#L894true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 81#L143true assume 0 != main_~tmp~0; 23#L114true ~switchedOnBeforeTS~0 := 0; 83#L165true havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 19#L186-1true [2021-07-06 20:35:19,847 INFO L793 eck$LassoCheckResult]: Loop: 19#L186-1true assume !false; 5#L910true assume test_~splverifierCounter~0 < 4; 106#L911true test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 109#L919true assume !(0 != test_~tmp~8); 112#L919-1true test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 24#L929true assume !(0 != test_~tmp___0~2); 27#L929-1true test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 70#L939true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 78#L947-2true havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~8;havoc isPumpRunning_~retValue_acc~8;isPumpRunning_~retValue_acc~8 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~8; 54#L796true __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 3#L175true assume !(0 != ~pumpRunning~0); 108#L685true assume !(0 != ~systemActive~0); 29#L692true havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 41#L653true __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 4#L186true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~1); 19#L186-1true [2021-07-06 20:35:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:35:19,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:19,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995348475] [2021-07-06 20:35:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:19,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,043 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,128 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1012977165, now seen corresponding path program 1 times [2021-07-06 20:35:20,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173557502] [2021-07-06 20:35:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:20,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:20,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:35:20,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:20,232 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 20:35:20,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:20,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173557502] [2021-07-06 20:35:20,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173557502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:20,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:20,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:35:20,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588179739] [2021-07-06 20:35:20,238 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:20,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:35:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:35:20,250 INFO L87 Difference]: Start difference. First operand has 117 states, 116 states have (on average 1.5258620689655173) internal successors, (177), 116 states have internal predecessors, (177), 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 20:35:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:20,290 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-07-06 20:35:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:35:20,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 167 transitions. [2021-07-06 20:35:20,298 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:35:20,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 110 states and 159 transitions. [2021-07-06 20:35:20,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2021-07-06 20:35:20,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2021-07-06 20:35:20,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 159 transitions. [2021-07-06 20:35:20,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:20,305 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-07-06 20:35:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 159 transitions. [2021-07-06 20:35:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-07-06 20:35:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 109 states have internal predecessors, (159), 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 20:35:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 159 transitions. [2021-07-06 20:35:20,329 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-07-06 20:35:20,329 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 159 transitions. [2021-07-06 20:35:20,329 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:35:20,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 159 transitions. [2021-07-06 20:35:20,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:35:20,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:20,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:20,333 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:20,333 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 20:35:20,333 INFO L791 eck$LassoCheckResult]: Stem: 347#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 258#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 259#L886 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 352#L894 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 343#L143 assume 0 != main_~tmp~0; 286#L114 ~switchedOnBeforeTS~0 := 0; 287#L165 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 248#L186-1 [2021-07-06 20:35:20,333 INFO L793 eck$LassoCheckResult]: Loop: 248#L186-1 assume !false; 249#L910 assume test_~splverifierCounter~0 < 4; 250#L911 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 351#L919 assume !(0 != test_~tmp~8); 261#L919-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 288#L929 assume !(0 != test_~tmp___0~2); 290#L929-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 295#L939 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 338#L947-2 havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~8;havoc isPumpRunning_~retValue_acc~8;isPumpRunning_~retValue_acc~8 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~8; 322#L796 __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 243#L175 assume !(0 != ~pumpRunning~0); 244#L685 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 348#L743 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 284#L717-1 assume !(0 == ~pumpRunning~0); 282#L692 havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 298#L653 __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 246#L186 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~1); 248#L186-1 [2021-07-06 20:35:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:35:20,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547204365] [2021-07-06 20:35:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,381 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,439 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,464 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,465 INFO L82 PathProgramCache]: Analyzing trace with hash 368159172, now seen corresponding path program 1 times [2021-07-06 20:35:20,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330021714] [2021-07-06 20:35:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:20,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:20,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:35:20,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:20,497 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 20:35:20,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:20,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330021714] [2021-07-06 20:35:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330021714] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:20,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:20,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:35:20,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383597436] [2021-07-06 20:35:20,498 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:20,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:35:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:35:20,499 INFO L87 Difference]: Start difference. First operand 110 states and 159 transitions. cyclomatic complexity: 51 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 20:35:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:20,604 INFO L93 Difference]: Finished difference Result 159 states and 218 transitions. [2021-07-06 20:35:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:35:20,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 218 transitions. [2021-07-06 20:35:20,606 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-07-06 20:35:20,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 218 transitions. [2021-07-06 20:35:20,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-07-06 20:35:20,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-07-06 20:35:20,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 218 transitions. [2021-07-06 20:35:20,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:20,609 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-07-06 20:35:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 218 transitions. [2021-07-06 20:35:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-07-06 20:35:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 159 states have (on average 1.371069182389937) internal successors, (218), 158 states have internal predecessors, (218), 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 20:35:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2021-07-06 20:35:20,614 INFO L704 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-07-06 20:35:20,614 INFO L587 BuchiCegarLoop]: Abstraction has 159 states and 218 transitions. [2021-07-06 20:35:20,614 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:35:20,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 218 transitions. [2021-07-06 20:35:20,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-07-06 20:35:20,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:20,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:20,615 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:20,615 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 20:35:20,616 INFO L791 eck$LassoCheckResult]: Stem: 628#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 532#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 533#L886 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 633#L894 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 624#L143 assume 0 != main_~tmp~0; 558#L114 ~switchedOnBeforeTS~0 := 0; 559#L165 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 522#L186-1 [2021-07-06 20:35:20,616 INFO L793 eck$LassoCheckResult]: Loop: 522#L186-1 assume !false; 523#L910 assume test_~splverifierCounter~0 < 4; 524#L911 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 632#L919 assume !(0 != test_~tmp~8); 535#L919-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 560#L929 assume !(0 != test_~tmp___0~2); 562#L929-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 567#L939 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 619#L947-2 havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~8;havoc isPumpRunning_~retValue_acc~8;isPumpRunning_~retValue_acc~8 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~8; 601#L796 __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 518#L175 assume !(0 != ~pumpRunning~0); 519#L685 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 629#L743 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 556#L717-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 557#L661-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 589#L666-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 625#L845-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 621#L845-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 599#L851-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 600#L721-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 570#L692 havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 571#L653 __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 520#L186 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~1); 522#L186-1 [2021-07-06 20:35:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:35:20,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868468060] [2021-07-06 20:35:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,635 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,660 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,667 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash 156241456, now seen corresponding path program 1 times [2021-07-06 20:35:20,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729678113] [2021-07-06 20:35:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:35:20,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:35:20,687 INFO L142 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-07-06 20:35:20,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:20,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:20,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:20,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:35:20,697 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 20:35:20,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:35:20,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729678113] [2021-07-06 20:35:20,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729678113] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:35:20,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:35:20,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:35:20,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662284058] [2021-07-06 20:35:20,698 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:35:20,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:35:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:35:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:35:20,698 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. cyclomatic complexity: 61 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 20:35:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:35:20,851 INFO L93 Difference]: Finished difference Result 664 states and 921 transitions. [2021-07-06 20:35:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:35:20,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 664 states and 921 transitions. [2021-07-06 20:35:20,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 457 [2021-07-06 20:35:20,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 664 states to 664 states and 921 transitions. [2021-07-06 20:35:20,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 664 [2021-07-06 20:35:20,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 664 [2021-07-06 20:35:20,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 664 states and 921 transitions. [2021-07-06 20:35:20,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:35:20,859 INFO L681 BuchiCegarLoop]: Abstraction has 664 states and 921 transitions. [2021-07-06 20:35:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states and 921 transitions. [2021-07-06 20:35:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 308. [2021-07-06 20:35:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 308 states have (on average 1.353896103896104) internal successors, (417), 307 states have internal predecessors, (417), 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 20:35:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 417 transitions. [2021-07-06 20:35:20,870 INFO L704 BuchiCegarLoop]: Abstraction has 308 states and 417 transitions. [2021-07-06 20:35:20,870 INFO L587 BuchiCegarLoop]: Abstraction has 308 states and 417 transitions. [2021-07-06 20:35:20,870 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:35:20,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 308 states and 417 transitions. [2021-07-06 20:35:20,871 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 218 [2021-07-06 20:35:20,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:35:20,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:35:20,872 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:35:20,872 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 20:35:20,872 INFO L791 eck$LassoCheckResult]: Stem: 1493#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1374#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1375#L886 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1500#L894 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1487#L143 assume 0 != main_~tmp~0; 1400#L114 ~switchedOnBeforeTS~0 := 0; 1401#L165 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1489#L186-1 [2021-07-06 20:35:20,872 INFO L793 eck$LassoCheckResult]: Loop: 1489#L186-1 assume !false; 1584#L910 assume test_~splverifierCounter~0 < 4; 1585#L911 test_~tmp~8 := test_#t~nondet77;havoc test_#t~nondet77; 1622#L919 assume !(0 != test_~tmp~8); 1619#L919-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 1618#L929 assume !(0 != test_~tmp___0~2); 1616#L929-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 1615#L939 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1613#L947-2 havoc __utac_acc__Specification5_spec__2_#t~ret8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~8;havoc isPumpRunning_~retValue_acc~8;isPumpRunning_~retValue_acc~8 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~8; 1612#L796 __utac_acc__Specification5_spec__2_#t~ret8 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret8;havoc __utac_acc__Specification5_spec__2_#t~ret8; 1360#L175 assume !(0 != ~pumpRunning~0); 1361#L685 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1494#L743 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1398#L717-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1399#L661-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1441#L666-1 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 1488#L845-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1484#L845-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 1452#L851-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1453#L721-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1422#L692 havoc __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_#t~ret10, __utac_acc__Specification5_spec__3_~tmp~1, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1433#L653 __utac_acc__Specification5_spec__3_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~1 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 1434#L186 assume 2 != __utac_acc__Specification5_spec__3_~tmp~1;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~8;havoc isPumpRunning_~retValue_acc~8;isPumpRunning_~retValue_acc~8 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~8; 1462#L796-1 __utac_acc__Specification5_spec__3_#t~ret10 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret10;havoc __utac_acc__Specification5_spec__3_#t~ret10; 1463#L190 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1489#L186-1 [2021-07-06 20:35:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:35:20,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754600991] [2021-07-06 20:35:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,911 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,928 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -175828501, now seen corresponding path program 1 times [2021-07-06 20:35:20,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199332793] [2021-07-06 20:35:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,938 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,941 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,944 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:35:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash -239254683, now seen corresponding path program 1 times [2021-07-06 20:35:20,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:35:20,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618154331] [2021-07-06 20:35:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:35:20,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:35:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,963 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:35:20,982 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:35:20,992 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:35:21,113 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-06 20:35:21,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:35:21,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-07-06 20:36:07,239 WARN L205 SmtUtils]: Spent 46.05 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:36:07,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:07,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:36:29,917 WARN L205 SmtUtils]: Spent 22.55 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:36:30,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:36:30 BoogieIcfgContainer [2021-07-06 20:36:30,018 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:36:30,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:36:30,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:36:30,019 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:36:30,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:35:19" (3/4) ... [2021-07-06 20:36:30,021 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:36:30,053 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:36:30,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:36:30,054 INFO L168 Benchmark]: Toolchain (without parser) took 71660.70 ms. Allocated memory was 58.7 MB in the beginning and 144.7 MB in the end (delta: 86.0 MB). Free memory was 36.1 MB in the beginning and 34.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,054 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:36:30,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.44 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.0 MB in the beginning and 43.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 71.3 MB. Free memory was 43.8 MB in the beginning and 40.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,055 INFO L168 Benchmark]: Boogie Preprocessor took 35.21 ms. Allocated memory is still 71.3 MB. Free memory was 40.1 MB in the beginning and 37.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,055 INFO L168 Benchmark]: RCFGBuilder took 843.40 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 65.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,055 INFO L168 Benchmark]: BuchiAutomizer took 70249.69 ms. Allocated memory was 86.0 MB in the beginning and 144.7 MB in the end (delta: 58.7 MB). Free memory was 65.3 MB in the beginning and 37.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 94.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,056 INFO L168 Benchmark]: Witness Printer took 34.33 ms. Allocated memory is still 144.7 MB. Free memory was 37.0 MB in the beginning and 34.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:36:30,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 436.44 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.0 MB in the beginning and 43.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.33 ms. Allocated memory is still 71.3 MB. Free memory was 43.8 MB in the beginning and 40.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.21 ms. Allocated memory is still 71.3 MB. Free memory was 40.1 MB in the beginning and 37.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 843.40 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 65.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 70249.69 ms. Allocated memory was 86.0 MB in the beginning and 144.7 MB in the end (delta: 58.7 MB). Free memory was 65.3 MB in the beginning and 37.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 94.7 MB. Max. memory is 16.1 GB. * Witness Printer took 34.33 ms. Allocated memory is still 144.7 MB. Free memory was 37.0 MB in the beginning and 34.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 308 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 70.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 69.7s. 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 31.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 356 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 308 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 601 SDtfs, 973 SDslu, 800 SDs, 0 SdLazy, 168 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.9ms 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: 909]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4213} State at position 1 is {NULL=0, NULL=0, NULL=4217, NULL=4213, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2350a8d8=0, NULL=0, NULL=0, NULL=0, NULL=4221, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@329d637b=0, retValue_acc=1, NULL=0, NULL=4222, retValue_acc=0, NULL=4223, tmp=0, tmp___1=0, NULL=4228, NULL=0, NULL=4239, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72596f94=0, cleanupTimeShifts=4, NULL=4214, waterLevel=1, NULL=0, NULL=0, NULL=0, NULL=4235, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=4233, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7da1e73d=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, tmp___0=0, NULL=4238, retValue_acc=1, head=0, tmp=0, NULL=4227, NULL=0, NULL=0, NULL=4219, NULL=4236, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=4225, NULL=0, NULL=4241, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c6d85b6=0, tmp___0=0, NULL=4240, NULL=0, tmp=1, NULL=0, NULL=4224, switchedOnBeforeTS=0, NULL=4229, tmp=0, \result=0, NULL=4215, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ea342d9=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d6cddc4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fc09c8a=0, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@350e0ba2=0, \result=0, NULL=4220, NULL=0, NULL=0, NULL=4230, tmp___0=0, NULL=4216, \result=0, NULL=4231, NULL=0, NULL=4226, tmp___2=78, splverifierCounter=0, NULL=0, NULL=4234, NULL=4218, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fc12b9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a8cfb0e=0, NULL=4237, retValue_acc=0, NULL=4232} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L51] int cleanupTimeShifts = 4; [L159] int switchedOnBeforeTS ; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L578] int waterLevel = 1; [L579] int methaneLevelCritical = 0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L134] int retValue_acc ; [L135] int tmp ; [L890] int retValue_acc ; [L893] retValue_acc = 1 [L894] return (retValue_acc); [L141] tmp = valid_product() [L143] COND TRUE \read(tmp) [L164] switchedOnBeforeTS = 0 [L900] int splverifierCounter ; [L901] int tmp ; [L902] int tmp___0 ; [L903] int tmp___1 ; [L904] int tmp___2 ; [L907] splverifierCounter = 0 Loop: [L909] COND TRUE 1 [L911] COND TRUE splverifierCounter < 4 [L917] tmp = __VERIFIER_nondet_int() [L919] COND FALSE !(\read(tmp)) [L927] tmp___0 = __VERIFIER_nondet_int() [L929] COND FALSE !(\read(tmp___0)) [L937] tmp___2 = __VERIFIER_nondet_int() [L939] COND TRUE \read(tmp___2) [L859] systemActive = 1 [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L173] switchedOnBeforeTS = isPumpRunning() [L685] COND FALSE !(\read(pumpRunning)) [L692] COND TRUE \read(systemActive) [L740] int tmp ; [L743] COND FALSE !(\read(pumpRunning)) [L714] int tmp ; [L717] COND TRUE ! pumpRunning [L837] int retValue_acc ; [L838] int tmp ; [L839] int tmp___0 ; [L658] int retValue_acc ; [L661] COND TRUE waterLevel < 2 [L662] retValue_acc = 1 [L663] return (retValue_acc); [L843] tmp = isHighWaterSensorDry() [L845] COND TRUE \read(tmp) [L846] tmp___0 = 0 [L850] retValue_acc = tmp___0 [L851] return (retValue_acc); [L719] tmp = isHighWaterLevel() [L721] COND FALSE !(\read(tmp)) [L179] int tmp ; [L180] int tmp___0 ; [L649] int retValue_acc ; [L652] retValue_acc = waterLevel [L653] return (retValue_acc); [L184] tmp = getWaterLevel() [L186] COND TRUE tmp != 2 [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L188] tmp___0 = isPumpRunning() [L190] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:36:30,107 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...