./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1dccf015ca242d6c8f0727566f3e9418ec10384 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:24:29,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:24:29,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:24:29,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:24:29,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:24:29,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:24:29,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:24:29,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:24:29,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:24:29,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:24:29,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:24:29,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:24:29,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:24:29,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:24:29,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:24:29,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:24:29,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:24:29,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:24:29,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:24:29,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:24:29,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:24:29,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:24:29,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:24:29,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:24:29,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:24:29,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:24:29,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:24:29,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:24:29,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:24:29,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:24:29,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:24:29,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:24:29,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:24:29,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:24:29,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:24:29,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:24:29,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:24:29,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:24:29,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:24:29,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:24:29,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:24:29,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:24:29,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:24:29,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:24:29,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:24:29,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:24:29,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:24:29,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:24:29,711 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:24:29,712 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:24:29,712 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:24:29,712 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:24:29,712 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:24:29,712 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:24:29,712 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:24:29,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:24:29,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:24:29,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:24:29,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:24:29,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:24:29,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:24:29,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:24:29,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:24:29,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:24:29,716 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:24:29,716 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1dccf015ca242d6c8f0727566f3e9418ec10384 [2021-08-27 16:24:29,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:24:29,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:24:29,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:24:29,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:24:29,964 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:24:29,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c [2021-08-27 16:24:30,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7a8e295/d0d7ddd6c08c4a7286c28ab48f5bb62e/FLAG7b617cce9 [2021-08-27 16:24:30,432 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:24:30,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c [2021-08-27 16:24:30,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7a8e295/d0d7ddd6c08c4a7286c28ab48f5bb62e/FLAG7b617cce9 [2021-08-27 16:24:30,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7a8e295/d0d7ddd6c08c4a7286c28ab48f5bb62e [2021-08-27 16:24:30,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:24:30,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:24:30,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:30,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:24:30,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:24:30,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae47784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30, skipping insertion in model container [2021-08-27 16:24:30,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:24:30,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:24:30,755 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c[16774,16787] [2021-08-27 16:24:30,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:30,778 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:24:30,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product40.cil.c[16774,16787] [2021-08-27 16:24:30,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:30,854 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:24:30,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30 WrapperNode [2021-08-27 16:24:30,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:30,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:30,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:24:30,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:24:30,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:30,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:24:30,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:24:30,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:24:30,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:24:30,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:24:30,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:24:30,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:24:30,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (1/1) ... [2021-08-27 16:24:30,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:24:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:24:31,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:24:31,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:24:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:24:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:24:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:24:31,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:24:31,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:24:31,818 INFO L299 CfgBuilder]: Removed 176 assume(true) statements. [2021-08-27 16:24:31,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:31 BoogieIcfgContainer [2021-08-27 16:24:31,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:24:31,820 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:24:31,820 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:24:31,822 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:24:31,823 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:31,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:24:30" (1/3) ... [2021-08-27 16:24:31,824 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fe3eda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:31, skipping insertion in model container [2021-08-27 16:24:31,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:31,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:30" (2/3) ... [2021-08-27 16:24:31,824 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fe3eda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:31, skipping insertion in model container [2021-08-27 16:24:31,825 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:31,825 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:31" (3/3) ... [2021-08-27 16:24:31,825 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2021-08-27 16:24:31,858 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:24:31,858 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:24:31,859 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:24:31,859 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:24:31,859 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:24:31,859 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:24:31,859 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:24:31,859 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:24:31,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:31,895 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:24:31,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:31,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:31,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:31,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:31,901 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:24:31,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:31,904 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:24:31,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:31,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:31,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:31,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:31,908 INFO L791 eck$LassoCheckResult]: Stem: 109#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 38#L-1true havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 86#L879true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 116#L887true main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 108#L834true assume 0 != main_~tmp~8; 10#L807true ~switchedOnBeforeTS~0 := 0; 100#L705true havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 79#L726-1true [2021-08-27 16:24:31,909 INFO L793 eck$LassoCheckResult]: Loop: 79#L726-1true assume !false; 54#L273true assume test_~splverifierCounter~0 < 4; 87#L274true test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 5#L282true assume !(0 != test_~tmp~3); 61#L282-1true test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 89#L292true assume !(0 != test_~tmp___0~1); 32#L292-1true test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 80#L302true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 76#L310-1true havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 42#L176true __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 12#L715true assume !(0 != ~pumpRunning~0); 121#L65true assume !(0 != ~systemActive~0); 59#L72true havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 55#L967true __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 91#L726true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 79#L726-1true [2021-08-27 16:24:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:24:31,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:31,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455695] [2021-08-27 16:24:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:31,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,071 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,144 INFO L82 PathProgramCache]: Analyzing trace with hash 676826806, now seen corresponding path program 1 times [2021-08-27 16:24:32,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237621659] [2021-08-27 16:24:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:32,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:32,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237621659] [2021-08-27 16:24:32,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237621659] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:32,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:32,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:24:32,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268725817] [2021-08-27 16:24:32,182 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:32,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:24:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:24:32,192 INFO L87 Difference]: Start difference. First operand has 119 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 118 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:32,225 INFO L93 Difference]: Finished difference Result 231 states and 335 transitions. [2021-08-27 16:24:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:24:32,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 335 transitions. [2021-08-27 16:24:32,229 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 150 [2021-08-27 16:24:32,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 217 states and 320 transitions. [2021-08-27 16:24:32,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-08-27 16:24:32,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-08-27 16:24:32,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 320 transitions. [2021-08-27 16:24:32,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:32,236 INFO L681 BuchiCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-08-27 16:24:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 320 transitions. [2021-08-27 16:24:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-08-27 16:24:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 215 states have (on average 1.4744186046511627) internal successors, (317), 214 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2021-08-27 16:24:32,259 INFO L704 BuchiCegarLoop]: Abstraction has 215 states and 317 transitions. [2021-08-27 16:24:32,259 INFO L587 BuchiCegarLoop]: Abstraction has 215 states and 317 transitions. [2021-08-27 16:24:32,259 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:24:32,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 215 states and 317 transitions. [2021-08-27 16:24:32,263 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-08-27 16:24:32,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:32,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:32,264 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,264 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,264 INFO L791 eck$LassoCheckResult]: Stem: 482#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 420#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 421#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 469#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 481#L834 assume 0 != main_~tmp~8; 373#L807 ~switchedOnBeforeTS~0 := 0; 374#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 460#L726-1 [2021-08-27 16:24:32,265 INFO L793 eck$LassoCheckResult]: Loop: 460#L726-1 assume !false; 461#L273 assume test_~splverifierCounter~0 < 4; 470#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 361#L282 assume !(0 != test_~tmp~3); 363#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 445#L292 assume !(0 != test_~tmp___0~1); 410#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 411#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 452#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 426#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 376#L715 assume !(0 != ~pumpRunning~0); 377#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 486#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 462#L97-1 assume !(0 == ~pumpRunning~0); 391#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 441#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 442#L726 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 460#L726-1 [2021-08-27 16:24:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:24:32,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701305474] [2021-08-27 16:24:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,306 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash -549788339, now seen corresponding path program 1 times [2021-08-27 16:24:32,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5706416] [2021-08-27 16:24:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:32,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:32,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5706416] [2021-08-27 16:24:32,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5706416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:32,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:32,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:24:32,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139130448] [2021-08-27 16:24:32,352 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:32,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:24:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:24:32,353 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:32,418 INFO L93 Difference]: Finished difference Result 314 states and 439 transitions. [2021-08-27 16:24:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:24:32,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 314 states and 439 transitions. [2021-08-27 16:24:32,420 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 16:24:32,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 314 states to 314 states and 439 transitions. [2021-08-27 16:24:32,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 314 [2021-08-27 16:24:32,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-08-27 16:24:32,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 314 states and 439 transitions. [2021-08-27 16:24:32,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:32,424 INFO L681 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-08-27 16:24:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states and 439 transitions. [2021-08-27 16:24:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-08-27 16:24:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 314 states have (on average 1.3980891719745223) internal successors, (439), 313 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 439 transitions. [2021-08-27 16:24:32,432 INFO L704 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-08-27 16:24:32,432 INFO L587 BuchiCegarLoop]: Abstraction has 314 states and 439 transitions. [2021-08-27 16:24:32,432 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:24:32,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 314 states and 439 transitions. [2021-08-27 16:24:32,434 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 16:24:32,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:32,434 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:32,435 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,435 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,435 INFO L791 eck$LassoCheckResult]: Stem: 1025#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 954#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 955#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1005#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 1024#L834 assume 0 != main_~tmp~8; 908#L807 ~switchedOnBeforeTS~0 := 0; 909#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1019#L726-1 [2021-08-27 16:24:32,435 INFO L793 eck$LassoCheckResult]: Loop: 1019#L726-1 assume !false; 1127#L273 assume test_~splverifierCounter~0 < 4; 1126#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 1125#L282 assume !(0 != test_~tmp~3); 1123#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 1122#L292 assume !(0 != test_~tmp___0~1); 1120#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 1119#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 998#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1115#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 1113#L715 assume !(0 != ~pumpRunning~0); 1111#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 931#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 932#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1108#L975-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1106#L980-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1104#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1103#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1102#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 924#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 926#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1134#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 1129#L726 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~7); 1019#L726-1 [2021-08-27 16:24:32,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:24:32,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102608157] [2021-08-27 16:24:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,491 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1721068121, now seen corresponding path program 1 times [2021-08-27 16:24:32,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520507274] [2021-08-27 16:24:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:24:32,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:32,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520507274] [2021-08-27 16:24:32,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520507274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:32,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:32,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:24:32,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87431406] [2021-08-27 16:24:32,592 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:32,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:24:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:24:32,593 INFO L87 Difference]: Start difference. First operand 314 states and 439 transitions. cyclomatic complexity: 128 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:32,783 INFO L93 Difference]: Finished difference Result 862 states and 1177 transitions. [2021-08-27 16:24:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:24:32,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 862 states and 1177 transitions. [2021-08-27 16:24:32,804 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 575 [2021-08-27 16:24:32,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 862 states to 862 states and 1177 transitions. [2021-08-27 16:24:32,821 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 862 [2021-08-27 16:24:32,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 862 [2021-08-27 16:24:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 862 states and 1177 transitions. [2021-08-27 16:24:32,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:32,825 INFO L681 BuchiCegarLoop]: Abstraction has 862 states and 1177 transitions. [2021-08-27 16:24:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states and 1177 transitions. [2021-08-27 16:24:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2021-08-27 16:24:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 621 states have (on average 1.357487922705314) internal successors, (843), 620 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 843 transitions. [2021-08-27 16:24:32,847 INFO L704 BuchiCegarLoop]: Abstraction has 621 states and 843 transitions. [2021-08-27 16:24:32,847 INFO L587 BuchiCegarLoop]: Abstraction has 621 states and 843 transitions. [2021-08-27 16:24:32,847 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:24:32,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 621 states and 843 transitions. [2021-08-27 16:24:32,849 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-08-27 16:24:32,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:32,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:32,850 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,850 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:32,850 INFO L791 eck$LassoCheckResult]: Stem: 2218#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2150#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~6, main_~tmp~8;havoc main_~retValue_acc~6;havoc main_~tmp~8; 2151#L879 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2202#L887 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 2217#L834 assume 0 != main_~tmp~8; 2100#L807 ~switchedOnBeforeTS~0 := 0; 2101#L705 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2167#L726-1 [2021-08-27 16:24:32,851 INFO L793 eck$LassoCheckResult]: Loop: 2167#L726-1 assume !false; 2169#L273 assume test_~splverifierCounter~0 < 4; 2170#L274 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 2088#L282 assume !(0 != test_~tmp~3); 2090#L282-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 2176#L292 assume !(0 != test_~tmp___0~1); 2207#L292-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 2412#L302 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2193#L310-1 havoc __utac_acc__Specification5_spec__2_#t~ret66;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2156#L176 __utac_acc__Specification5_spec__2_#t~ret66 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret66;havoc __utac_acc__Specification5_spec__2_#t~ret66; 2157#L715 assume !(0 != ~pumpRunning~0); 2649#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2126#L123 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2127#L97-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2197#L975-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2178#L980-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 2179#L225-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 2209#L225-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2158#L231-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2119#L101-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2121#L72 havoc __utac_acc__Specification5_spec__3_#t~ret67, __utac_acc__Specification5_spec__3_#t~ret68, __utac_acc__Specification5_spec__3_~tmp~7, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~7;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2172#L967 __utac_acc__Specification5_spec__3_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~7 := __utac_acc__Specification5_spec__3_#t~ret67;havoc __utac_acc__Specification5_spec__3_#t~ret67; 2173#L726 assume 2 != __utac_acc__Specification5_spec__3_~tmp~7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2128#L176-1 __utac_acc__Specification5_spec__3_#t~ret68 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret68;havoc __utac_acc__Specification5_spec__3_#t~ret68; 2129#L730 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2167#L726-1 [2021-08-27 16:24:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:24:32,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083257102] [2021-08-27 16:24:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,880 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash 384043252, now seen corresponding path program 1 times [2021-08-27 16:24:32,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130960613] [2021-08-27 16:24:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,942 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,946 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash 320617070, now seen corresponding path program 1 times [2021-08-27 16:24:32,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:32,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959702934] [2021-08-27 16:24:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:32,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:32,976 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:33,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:14,052 WARN L207 SmtUtils]: Spent 40.61 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:25:56,721 WARN L207 SmtUtils]: Spent 20.82 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:25:56,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:25:56 BoogieIcfgContainer [2021-08-27 16:25:56,903 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:25:56,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:25:56,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:25:56,914 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:25:56,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:31" (3/4) ... [2021-08-27 16:25:56,918 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:25:56,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:25:56,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:25:57,000 INFO L168 Benchmark]: Toolchain (without parser) took 86538.92 ms. Allocated memory was 65.0 MB in the beginning and 157.3 MB in the end (delta: 92.3 MB). Free memory was 40.4 MB in the beginning and 41.2 MB in the end (delta: -797.9 kB). Peak memory consumption was 91.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,001 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:25:57,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.86 ms. Allocated memory is still 65.0 MB. Free memory was 40.1 MB in the beginning and 40.6 MB in the end (delta: -451.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.85 ms. Allocated memory is still 65.0 MB. Free memory was 40.4 MB in the beginning and 36.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,001 INFO L168 Benchmark]: Boogie Preprocessor took 44.13 ms. Allocated memory is still 65.0 MB. Free memory was 36.9 MB in the beginning and 34.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,002 INFO L168 Benchmark]: RCFGBuilder took 856.45 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 34.3 MB in the beginning and 56.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,002 INFO L168 Benchmark]: BuchiAutomizer took 85082.86 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 56.6 MB in the beginning and 44.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,002 INFO L168 Benchmark]: Witness Printer took 84.92 ms. Allocated memory is still 157.3 MB. Free memory was 44.3 MB in the beginning and 41.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:25:57,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.86 ms. Allocated memory is still 65.0 MB. Free memory was 40.1 MB in the beginning and 40.6 MB in the end (delta: -451.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.85 ms. Allocated memory is still 65.0 MB. Free memory was 40.4 MB in the beginning and 36.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.13 ms. Allocated memory is still 65.0 MB. Free memory was 36.9 MB in the beginning and 34.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 856.45 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 34.3 MB in the beginning and 56.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85082.86 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 56.6 MB in the beginning and 44.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.1 GB. * Witness Printer took 84.92 ms. Allocated memory is still 157.3 MB. Free memory was 44.3 MB in the beginning and 41.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 621 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 84.5s. 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 45.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 243 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 621 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 578 SDtfs, 816 SDslu, 765 SDs, 0 SdLazy, 130 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 272]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=10231} State at position 1 is {NULL=0, NULL=0, retValue_acc=1, NULL=10231, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a0d50c8=0, NULL=10243, methaneLevelCritical=0, NULL=10233, tmp=0, retValue_acc=0, tmp___1=0, NULL=10237, NULL=0, cleanupTimeShifts=4, NULL=10253, NULL=0, waterLevel=1, NULL=10240, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28a72776=0, NULL=0, NULL=10239, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5983651e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4644c52c=66, NULL=10238, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c889553=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ee144f8=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b6110a=0, NULL=0, NULL=10234, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@467b6f1d=0, NULL=0, tmp___0=0, NULL=10254, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22d74449=0, NULL=10251, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@426de1e6=0, head=0, NULL=10252, NULL=10248, NULL=10258, NULL=0, retValue_acc=0, NULL=0, NULL=10245, NULL=10236, tmp=1, NULL=0, tmp___0=0, NULL=10235, NULL=0, tmp=0, switchedOnBeforeTS=0, NULL=10249, NULL=10256, \result=0, NULL=10241, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bbfd6e3=0, NULL=0, NULL=10259, tmp___0=0, NULL=10257, \result=0, NULL=10255, NULL=10250, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=10246, tmp___2=66, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=10244, retValue_acc=0, NULL=10232, NULL=0, NULL=0, NULL=10260, NULL=10242} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L500] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L699] int switchedOnBeforeTS ; [L748] int cleanupTimeShifts = 4; [L892] int waterLevel = 1; [L893] int methaneLevelCritical = 0; [L825] int retValue_acc ; [L826] int tmp ; [L883] int retValue_acc ; [L886] retValue_acc = 1 [L887] return (retValue_acc); [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L704] switchedOnBeforeTS = 0 [L263] int splverifierCounter ; [L264] int tmp ; [L265] int tmp___0 ; [L266] int tmp___1 ; [L267] int tmp___2 ; [L270] splverifierCounter = 0 Loop: [L272] COND TRUE 1 [L274] COND TRUE splverifierCounter < 4 [L280] tmp = __VERIFIER_nondet_int() [L282] COND FALSE !(\read(tmp)) [L290] tmp___0 = __VERIFIER_nondet_int() [L292] COND FALSE !(\read(tmp___0)) [L300] tmp___2 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp___2) [L254] systemActive = 1 [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L713] switchedOnBeforeTS = isPumpRunning() [L65] COND FALSE !(\read(pumpRunning)) [L72] COND TRUE \read(systemActive) [L120] int tmp ; [L123] COND FALSE !(\read(pumpRunning)) [L94] int tmp ; [L97] COND TRUE ! pumpRunning [L217] int retValue_acc ; [L218] int tmp ; [L219] int tmp___0 ; [L972] int retValue_acc ; [L975] COND TRUE waterLevel < 2 [L976] retValue_acc = 1 [L977] return (retValue_acc); [L223] tmp = isHighWaterSensorDry() [L225] COND TRUE \read(tmp) [L226] tmp___0 = 0 [L230] retValue_acc = tmp___0 [L231] return (retValue_acc); [L99] tmp = isHighWaterLevel() [L101] COND FALSE !(\read(tmp)) [L719] int tmp ; [L720] int tmp___0 ; [L963] int retValue_acc ; [L966] retValue_acc = waterLevel [L967] return (retValue_acc); [L724] tmp = getWaterLevel() [L726] COND TRUE tmp != 2 [L172] int retValue_acc ; [L175] retValue_acc = pumpRunning [L176] return (retValue_acc); [L728] tmp___0 = isPumpRunning() [L730] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:25:57,064 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...