./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product39.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_product39.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 18ffa626b14f3a98f8946a4838c47fc7d91cbcd4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:24:26,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:24:26,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:24:26,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:24:26,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:24:26,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:24:26,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:24:26,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:24:26,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:24:26,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:24:26,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:24:26,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:24:26,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:24:26,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:24:26,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:24:26,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:24:26,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:24:26,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:24:26,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:24:26,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:24:26,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:24:26,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:24:26,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:24:26,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:24:26,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:24:26,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:24:26,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:24:26,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:24:26,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:24:26,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:24:26,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:24:26,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:24:26,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:24:26,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:24:26,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:24:26,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:24:26,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:24:26,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:24:26,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:24:26,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:24:26,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:24:26,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:24:26,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:24:26,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:24:26,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:24:26,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:24:26,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:24:26,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:24:26,607 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:24:26,608 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:24:26,608 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:24:26,608 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:24:26,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:24:26,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:24:26,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:24:26,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:24:26,611 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:24:26,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:24:26,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:24:26,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:24:26,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:24:26,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:24:26,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:24:26,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:24:26,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:24:26,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ffa626b14f3a98f8946a4838c47fc7d91cbcd4 [2021-08-27 16:24:26,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:24:26,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:24:26,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:24:26,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:24:26,874 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:24:26,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2021-08-27 16:24:26,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074649dfd/6c60d55db3a341ebaf5ec5bfd826fde8/FLAG3b6d5628d [2021-08-27 16:24:27,362 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:24:27,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product39.cil.c [2021-08-27 16:24:27,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074649dfd/6c60d55db3a341ebaf5ec5bfd826fde8/FLAG3b6d5628d [2021-08-27 16:24:27,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074649dfd/6c60d55db3a341ebaf5ec5bfd826fde8 [2021-08-27 16:24:27,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:24:27,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:24:27,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:27,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:24:27,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:24:27,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:27" (1/1) ... [2021-08-27 16:24:27,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f83979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:27, skipping insertion in model container [2021-08-27 16:24:27,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:24:27" (1/1) ... [2021-08-27 16:24:27,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:24:27,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:24:27,890 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_product39.cil.c[1281,1294] [2021-08-27 16:24:28,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:28,030 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:24:28,038 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_product39.cil.c[1281,1294] [2021-08-27 16:24:28,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:24:28,093 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:24:28,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28 WrapperNode [2021-08-27 16:24:28,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:24:28,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:28,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:24:28,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:24:28,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:24:28,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:24:28,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:24:28,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:24:28,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:24:28,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:24:28,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:24:28,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:24:28,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (1/1) ... [2021-08-27 16:24:28,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:24:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:24:28,239 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 16:24:28,246 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 16:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:24:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:24:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:24:28,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:24:28,991 INFO L299 CfgBuilder]: Removed 174 assume(true) statements. [2021-08-27 16:24:28,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:28 BoogieIcfgContainer [2021-08-27 16:24:28,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:24:28,993 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:24:28,993 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:24:28,995 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:24:28,996 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:28,996 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:24:27" (1/3) ... [2021-08-27 16:24:28,996 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@536a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:28, skipping insertion in model container [2021-08-27 16:24:28,996 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:28,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:24:28" (2/3) ... [2021-08-27 16:24:28,997 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@536a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:24:28, skipping insertion in model container [2021-08-27 16:24:28,997 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:24:28,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:28" (3/3) ... [2021-08-27 16:24:28,998 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2021-08-27 16:24:29,022 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:24:29,022 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:24:29,022 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:24:29,023 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:24:29,023 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:24:29,023 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:24:29,023 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:24:29,023 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:24:29,033 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 16:24:29,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:24:29,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:29,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:29,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:29,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:29,061 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:24:29,061 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 16:24:29,070 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:24:29,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:29,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:29,071 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:29,071 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:29,074 INFO L791 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.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;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 32#L-1true havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 57#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 104#L84true main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 119#L384true assume 0 != main_~tmp~3; 14#L358true ~switchedOnBeforeTS~0 := 0; 29#L472true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4#L493-1true [2021-08-27 16:24:29,075 INFO L793 eck$LassoCheckResult]: Loop: 4#L493-1true assume !false; 111#L409true assume test_~splverifierCounter~0 < 4; 88#L410true test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 17#L418true assume !(0 != test_~tmp~4); 8#L418-1true test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 95#L428true assume !(0 != test_~tmp___0~1); 61#L428-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 84#L438true assume 0 != test_~tmp___2~0; 6#L444-1true havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 73#L222true __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 50#L482true assume !(0 != ~pumpRunning~0); 21#L111true assume !(0 != ~systemActive~0); 83#L118true havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;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#L956true __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 16#L493true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 4#L493-1true [2021-08-27 16:24:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:29,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:24:29,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:29,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13603640] [2021-08-27 16:24:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:29,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:29,254 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:29,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash -240260331, now seen corresponding path program 1 times [2021-08-27 16:24:29,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:29,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516881178] [2021-08-27 16:24:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:29,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:29,374 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:29,384 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1693764879, now seen corresponding path program 1 times [2021-08-27 16:24:29,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:29,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177171577] [2021-08-27 16:24:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:29,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:29,507 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 16:24:29,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:29,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177171577] [2021-08-27 16:24:29,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177171577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:29,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:29,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:24:29,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372892615] [2021-08-27 16:24:29,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:24:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:24:29,665 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 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:24:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:29,862 INFO L93 Difference]: Finished difference Result 289 states and 412 transitions. [2021-08-27 16:24:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:24:29,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 412 transitions. [2021-08-27 16:24:29,874 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 187 [2021-08-27 16:24:29,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 268 states and 391 transitions. [2021-08-27 16:24:29,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-08-27 16:24:29,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-08-27 16:24:29,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 391 transitions. [2021-08-27 16:24:29,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:29,889 INFO L681 BuchiCegarLoop]: Abstraction has 268 states and 391 transitions. [2021-08-27 16:24:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 391 transitions. [2021-08-27 16:24:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 161. [2021-08-27 16:24:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 161 states have (on average 1.4472049689440993) internal successors, (233), 160 states have internal predecessors, (233), 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 16:24:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 233 transitions. [2021-08-27 16:24:29,924 INFO L704 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2021-08-27 16:24:29,925 INFO L587 BuchiCegarLoop]: Abstraction has 161 states and 233 transitions. [2021-08-27 16:24:29,925 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:24:29,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 161 states and 233 transitions. [2021-08-27 16:24:29,927 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-08-27 16:24:29,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:29,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:29,927 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:29,928 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 16:24:29,928 INFO L791 eck$LassoCheckResult]: Stem: 537#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.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;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 471#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 472#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 509#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 536#L384 assume 0 != main_~tmp~3; 445#L358 ~switchedOnBeforeTS~0 := 0; 446#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 426#L493-1 [2021-08-27 16:24:29,928 INFO L793 eck$LassoCheckResult]: Loop: 426#L493-1 assume !false; 427#L409 assume test_~splverifierCounter~0 < 4; 530#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 449#L418 assume !(0 != test_~tmp~4); 433#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 434#L428 assume !(0 != test_~tmp___0~1); 490#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 511#L438 assume 0 != test_~tmp___2~0; 430#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 431#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 499#L482 assume !(0 != ~pumpRunning~0); 455#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 456#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 497#L143-1 assume !(0 == ~pumpRunning~0); 493#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;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; 507#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 447#L493 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 426#L493-1 [2021-08-27 16:24:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:24:29,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:29,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505966188] [2021-08-27 16:24:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:29,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:29,982 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,022 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:30,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1402231348, now seen corresponding path program 1 times [2021-08-27 16:24:30,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092567029] [2021-08-27 16:24:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:30,036 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 16:24:30,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:30,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092567029] [2021-08-27 16:24:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092567029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:30,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:30,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:24:30,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764779490] [2021-08-27 16:24:30,037 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:30,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:24:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:24:30,038 INFO L87 Difference]: Start difference. First operand 161 states and 233 transitions. cyclomatic complexity: 75 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 16:24:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:30,103 INFO L93 Difference]: Finished difference Result 208 states and 284 transitions. [2021-08-27 16:24:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:24:30,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 208 states and 284 transitions. [2021-08-27 16:24:30,105 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-08-27 16:24:30,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 208 states to 208 states and 284 transitions. [2021-08-27 16:24:30,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2021-08-27 16:24:30,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-08-27 16:24:30,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 284 transitions. [2021-08-27 16:24:30,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:30,107 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-08-27 16:24:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 284 transitions. [2021-08-27 16:24:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-08-27 16:24:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 208 states have (on average 1.3653846153846154) internal successors, (284), 207 states have internal predecessors, (284), 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 16:24:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 284 transitions. [2021-08-27 16:24:30,111 INFO L704 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-08-27 16:24:30,112 INFO L587 BuchiCegarLoop]: Abstraction has 208 states and 284 transitions. [2021-08-27 16:24:30,112 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:24:30,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 208 states and 284 transitions. [2021-08-27 16:24:30,113 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2021-08-27 16:24:30,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:30,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:30,113 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:30,114 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 16:24:30,114 INFO L791 eck$LassoCheckResult]: Stem: 926#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.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;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 846#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 847#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 882#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 925#L384 assume 0 != main_~tmp~3; 820#L358 ~switchedOnBeforeTS~0 := 0; 821#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 801#L493-1 [2021-08-27 16:24:30,114 INFO L793 eck$LassoCheckResult]: Loop: 801#L493-1 assume !false; 802#L409 assume test_~splverifierCounter~0 < 4; 913#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 824#L418 assume !(0 != test_~tmp~4); 808#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 809#L428 assume !(0 != test_~tmp___0~1); 966#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 909#L438 assume 0 != test_~tmp___2~0; 805#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 806#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 872#L482 assume !(0 != ~pumpRunning~0); 830#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 831#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 871#L143-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 851#L964-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 852#L969-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 857#L271-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 884#L271-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 877#L277-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 874#L147-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 867#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;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; 880#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 822#L493 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~5); 801#L493-1 [2021-08-27 16:24:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:24:30,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347091554] [2021-08-27 16:24:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,142 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2024417080, now seen corresponding path program 1 times [2021-08-27 16:24:30,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716809998] [2021-08-27 16:24:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:24:30,222 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 16:24:30,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:24:30,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716809998] [2021-08-27 16:24:30,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716809998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:24:30,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:24:30,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:24:30,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475692567] [2021-08-27 16:24:30,224 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:24:30,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:24:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:24:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:24:30,225 INFO L87 Difference]: Start difference. First operand 208 states and 284 transitions. cyclomatic complexity: 79 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 16:24:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:24:30,348 INFO L93 Difference]: Finished difference Result 556 states and 743 transitions. [2021-08-27 16:24:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:24:30,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 556 states and 743 transitions. [2021-08-27 16:24:30,351 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 373 [2021-08-27 16:24:30,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 556 states to 556 states and 743 transitions. [2021-08-27 16:24:30,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 556 [2021-08-27 16:24:30,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 556 [2021-08-27 16:24:30,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 556 states and 743 transitions. [2021-08-27 16:24:30,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:24:30,355 INFO L681 BuchiCegarLoop]: Abstraction has 556 states and 743 transitions. [2021-08-27 16:24:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states and 743 transitions. [2021-08-27 16:24:30,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 409. [2021-08-27 16:24:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 409 states have (on average 1.3276283618581908) internal successors, (543), 408 states have internal predecessors, (543), 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 16:24:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 543 transitions. [2021-08-27 16:24:30,362 INFO L704 BuchiCegarLoop]: Abstraction has 409 states and 543 transitions. [2021-08-27 16:24:30,362 INFO L587 BuchiCegarLoop]: Abstraction has 409 states and 543 transitions. [2021-08-27 16:24:30,362 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:24:30,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 409 states and 543 transitions. [2021-08-27 16:24:30,364 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 296 [2021-08-27 16:24:30,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:24:30,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:24:30,365 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:24:30,366 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 16:24:30,366 INFO L791 eck$LassoCheckResult]: Stem: 1720#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.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;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1630#L-1 havoc main_#res;havoc main_#t~ret28, main_~retValue_acc~5, main_~tmp~3;havoc main_~retValue_acc~5;havoc main_~tmp~3; 1631#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1670#L84 main_#t~ret28 := valid_product_#res;main_~tmp~3 := main_#t~ret28;havoc main_#t~ret28; 1719#L384 assume 0 != main_~tmp~3; 1600#L358 ~switchedOnBeforeTS~0 := 0; 1601#L472 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1581#L493-1 [2021-08-27 16:24:30,366 INFO L793 eck$LassoCheckResult]: Loop: 1581#L493-1 assume !false; 1582#L409 assume test_~splverifierCounter~0 < 4; 1707#L410 test_~tmp~4 := test_#t~nondet29;havoc test_#t~nondet29; 1604#L418 assume !(0 != test_~tmp~4); 1588#L418-1 test_~tmp___0~1 := test_#t~nondet30;havoc test_#t~nondet30; 1589#L428 assume !(0 != test_~tmp___0~1); 1648#L428-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1673#L438 assume 0 != test_~tmp___2~0; 1585#L444-1 havoc __utac_acc__Specification5_spec__2_#t~ret33;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 1586#L222 __utac_acc__Specification5_spec__2_#t~ret33 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret33;havoc __utac_acc__Specification5_spec__2_#t~ret33; 1656#L482 assume !(0 != ~pumpRunning~0); 1610#L111 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1611#L169 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1655#L143-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1635#L964-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1636#L969-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1641#L271-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1672#L271-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1701#L277-1 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1658#L147-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1660#L118 havoc __utac_acc__Specification5_spec__3_#t~ret34, __utac_acc__Specification5_spec__3_#t~ret35, __utac_acc__Specification5_spec__3_~tmp~5, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~5;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; 1699#L956 __utac_acc__Specification5_spec__3_#t~ret34 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~5 := __utac_acc__Specification5_spec__3_#t~ret34;havoc __utac_acc__Specification5_spec__3_#t~ret34; 1602#L493 assume 2 != __utac_acc__Specification5_spec__3_~tmp~5;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 1603#L222-1 __utac_acc__Specification5_spec__3_#t~ret35 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret35;havoc __utac_acc__Specification5_spec__3_#t~ret35; 1721#L497 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1581#L493-1 [2021-08-27 16:24:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:24:30,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894326884] [2021-08-27 16:24:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,387 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash -155383309, now seen corresponding path program 1 times [2021-08-27 16:24:30,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879943872] [2021-08-27 16:24:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,417 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:24:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:24:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash -218809491, now seen corresponding path program 1 times [2021-08-27 16:24:30,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:24:30,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277844767] [2021-08-27 16:24:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:24:30,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:24:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:24:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:24:30,509 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:16,494 WARN L207 SmtUtils]: Spent 45.74 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:26:03,743 WARN L207 SmtUtils]: Spent 22.41 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:26:03,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:26:03 BoogieIcfgContainer [2021-08-27 16:26:03,846 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:26:03,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:26:03,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:26:03,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:26:03,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:24:28" (3/4) ... [2021-08-27 16:26:03,849 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:26:03,884 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:26:03,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:26:03,885 INFO L168 Benchmark]: Toolchain (without parser) took 96138.94 ms. Allocated memory was 54.5 MB in the beginning and 102.8 MB in the end (delta: 48.2 MB). Free memory was 36.3 MB in the beginning and 45.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,885 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 44.0 MB. Free memory was 26.3 MB in the beginning and 26.3 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:26:03,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 30.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.39 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 26.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,886 INFO L168 Benchmark]: Boogie Preprocessor took 56.30 ms. Allocated memory is still 54.5 MB. Free memory was 26.4 MB in the beginning and 36.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,887 INFO L168 Benchmark]: RCFGBuilder took 771.65 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.8 MB in the beginning and 29.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,887 INFO L168 Benchmark]: BuchiAutomizer took 94853.24 ms. Allocated memory was 67.1 MB in the beginning and 102.8 MB in the end (delta: 35.7 MB). Free memory was 29.7 MB in the beginning and 48.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,888 INFO L168 Benchmark]: Witness Printer took 37.40 ms. Allocated memory is still 102.8 MB. Free memory was 48.3 MB in the beginning and 45.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:03,890 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 44.0 MB. Free memory was 26.3 MB in the beginning and 26.3 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 30.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.39 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 26.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.30 ms. Allocated memory is still 54.5 MB. Free memory was 26.4 MB in the beginning and 36.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 771.65 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.8 MB in the beginning and 29.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 94853.24 ms. Allocated memory was 67.1 MB in the beginning and 102.8 MB in the end (delta: 35.7 MB). Free memory was 29.7 MB in the beginning and 48.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 37.40 ms. Allocated memory is still 102.8 MB. Free memory was 48.3 MB in the beginning and 45.2 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 6 locations. The remainder module has 409 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 94.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 94.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 37.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 254 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 409 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 575 SDtfs, 1445 SDslu, 1299 SDs, 0 SdLazy, 158 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 408]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=753} State at position 1 is {NULL=0, NULL=0, NULL=768, NULL=0, retValue_acc=1, NULL=753, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@208ac729=0, NULL=765, methaneLevelCritical=0, NULL=761, retValue_acc=0, tmp=0, NULL=0, NULL=770, NULL=0, tmp___1=0, NULL=0, NULL=782, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b510d4e=0, NULL=754, waterLevel=1, NULL=762, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76e7005d=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f944643=0, head=0, pumpRunning=0, NULL=758, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e19c09b=0, tmp=1, NULL=777, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50d288af=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@140a4e5f=71, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@373b301c=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a9dd739=0, tmp___0=0, NULL=755, NULL=779, NULL=760, tmp=0, head=0, NULL=0, NULL=769, retValue_acc=0, NULL=767, NULL=778, NULL=757, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=775, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=783, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=781, NULL=771, tmp___0=0, \result=0, NULL=756, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14f312ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3459f80d=0, NULL=0, NULL=766, NULL=764, NULL=780, retValue_acc=1, tmp___2=71, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=776, NULL=0, NULL=0, NULL=774, NULL=0, NULL=763, NULL=759, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L99] int pumpRunning = 0; [L100] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L466] int switchedOnBeforeTS ; [L684] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L881] int waterLevel = 1; [L882] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L471] switchedOnBeforeTS = 0 [L399] int splverifierCounter ; [L400] int tmp ; [L401] int tmp___0 ; [L402] int tmp___1 ; [L403] int tmp___2 ; [L406] splverifierCounter = 0 Loop: [L408] COND TRUE 1 [L410] COND TRUE splverifierCounter < 4 [L416] tmp = __VERIFIER_nondet_int() [L418] COND FALSE !(\read(tmp)) [L426] tmp___0 = __VERIFIER_nondet_int() [L428] COND FALSE !(\read(tmp___0)) [L436] tmp___2 = __VERIFIER_nondet_int() [L438] COND TRUE \read(tmp___2) [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L480] switchedOnBeforeTS = isPumpRunning() [L111] COND FALSE !(\read(pumpRunning)) [L118] COND TRUE \read(systemActive) [L166] int tmp ; [L169] COND FALSE !(\read(pumpRunning)) [L140] int tmp ; [L143] COND TRUE ! pumpRunning [L263] int retValue_acc ; [L264] int tmp ; [L265] int tmp___0 ; [L961] int retValue_acc ; [L964] COND TRUE waterLevel < 2 [L965] retValue_acc = 1 [L966] return (retValue_acc); [L269] tmp = isHighWaterSensorDry() [L271] COND TRUE \read(tmp) [L272] tmp___0 = 0 [L276] retValue_acc = tmp___0 [L277] return (retValue_acc); [L145] tmp = isHighWaterLevel() [L147] COND FALSE !(\read(tmp)) [L486] int tmp ; [L487] int tmp___0 ; [L952] int retValue_acc ; [L955] retValue_acc = waterLevel [L956] return (retValue_acc); [L491] tmp = getWaterLevel() [L493] COND TRUE tmp != 2 [L218] int retValue_acc ; [L221] retValue_acc = pumpRunning [L222] return (retValue_acc); [L495] tmp___0 = isPumpRunning() [L497] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:26:03,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...