./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product49.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 b00f2b5e86cdb554aa1013f25ad23bb3779c67ba .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:35:59,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:35:59,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:35:59,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:35:59,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:35:59,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:35:59,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:35:59,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:35:59,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:35:59,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:35:59,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:35:59,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:35:59,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:35:59,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:35:59,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:35:59,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:35:59,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:35:59,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:35:59,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:35:59,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:35:59,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:35:59,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:35:59,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:35:59,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:35:59,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:35:59,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:35:59,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:35:59,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:35:59,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:35:59,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:35:59,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:35:59,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:35:59,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:35:59,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:35:59,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:35:59,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:35:59,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:35:59,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:35:59,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:35:59,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:35:59,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:35:59,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:35:59,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:35:59,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:35:59,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:35:59,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:35:59,975 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:35:59,975 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:35:59,975 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:35:59,975 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:35:59,975 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:35:59,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:35:59,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:35:59,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:35:59,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:35:59,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:35:59,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:35:59,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:35:59,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:35:59,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:35:59,979 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:35:59,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b00f2b5e86cdb554aa1013f25ad23bb3779c67ba [2021-07-06 20:36:00,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:36:00,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:36:00,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:36:00,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:36:00,217 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:36:00,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2021-07-06 20:36:00,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3e04332/a928e4d6b2734104bb645c3580cc4cd7/FLAG309adbf73 [2021-07-06 20:36:00,649 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:36:00,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2021-07-06 20:36:00,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3e04332/a928e4d6b2734104bb645c3580cc4cd7/FLAG309adbf73 [2021-07-06 20:36:00,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3e04332/a928e4d6b2734104bb645c3580cc4cd7 [2021-07-06 20:36:00,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:36:00,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:36:00,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:36:00,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:36:00,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:36:00,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:36:00" (1/1) ... [2021-07-06 20:36:00,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5feb4177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:00, skipping insertion in model container [2021-07-06 20:36:00,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:36:00" (1/1) ... [2021-07-06 20:36:00,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:36:00,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:36:00,882 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c[6562,6575] [2021-07-06 20:36:00,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:36:00,970 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:36:01,006 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c[6562,6575] [2021-07-06 20:36:01,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:36:01,072 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:36:01,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01 WrapperNode [2021-07-06 20:36:01,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:36:01,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:36:01,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:36:01,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:36:01,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:36:01,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:36:01,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:36:01,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:36:01,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:36:01,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:36:01,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:36:01,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:36:01,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (1/1) ... [2021-07-06 20:36:01,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:36:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:36:01,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:36:01,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:36:01,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:36:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:36:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:36:01,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:36:01,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:36:01,926 INFO L299 CfgBuilder]: Removed 170 assume(true) statements. [2021-07-06 20:36:01,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:01 BoogieIcfgContainer [2021-07-06 20:36:01,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:36:01,928 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:36:01,928 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:36:01,930 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:36:01,930 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:01,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:36:00" (1/3) ... [2021-07-06 20:36:01,931 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e894e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:36:01, skipping insertion in model container [2021-07-06 20:36:01,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:01,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:36:01" (2/3) ... [2021-07-06 20:36:01,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e894e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:36:01, skipping insertion in model container [2021-07-06 20:36:01,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:36:01,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:01" (3/3) ... [2021-07-06 20:36:01,933 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2021-07-06 20:36:01,956 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:36:01,957 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:36:01,957 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:36:01,957 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:36:01,957 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:36:01,957 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:36:01,957 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:36:01,957 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:36:01,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:01,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-07-06 20:36:01,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:01,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:02,000 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,001 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,001 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:36:02,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:02,012 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-07-06 20:36:02,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:02,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:02,013 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,013 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,021 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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 16#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 120#L558true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 13#L566true main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 14#L522true assume 0 != main_~tmp~5; 35#L494true ~switchedOnBeforeTS~0 := 0; 32#L943true havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 78#L964-1true [2021-07-06 20:36:02,024 INFO L793 eck$LassoCheckResult]: Loop: 78#L964-1true assume !false; 65#L268true assume test_~splverifierCounter~0 < 4; 124#L269true test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 20#L277true assume !(0 != test_~tmp~4); 121#L277-1true test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 89#L287true assume !(0 != test_~tmp___0~2); 57#L287-1true test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 105#L297true assume 0 != test_~tmp___2~0; 96#L303-2true havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 3#L175true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 76#L953true assume !(0 != ~pumpRunning~0); 90#L64true assume !(0 != ~systemActive~0); 112#L71true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 5#L398true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 75#L964true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 78#L964-1true [2021-07-06 20:36:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:36:02,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042312190] [2021-07-06 20:36:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,225 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,278 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,298 INFO L82 PathProgramCache]: Analyzing trace with hash 96105516, now seen corresponding path program 1 times [2021-07-06 20:36:02,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335856883] [2021-07-06 20:36:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,303 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,305 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2030130726, now seen corresponding path program 1 times [2021-07-06 20:36:02,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392783070] [2021-07-06 20:36:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:02,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:02,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:36:02,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:02,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392783070] [2021-07-06 20:36:02,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392783070] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:02,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:02,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:36:02,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472257090] [2021-07-06 20:36:02,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-06 20:36:02,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:02,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:36:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:36:02,526 INFO L87 Difference]: Start difference. First operand has 123 states, 122 states have (on average 1.5245901639344261) internal successors, (186), 122 states have internal predecessors, (186), 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) [2021-07-06 20:36:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:02,626 INFO L93 Difference]: Finished difference Result 123 states and 175 transitions. [2021-07-06 20:36:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 20:36:02,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 175 transitions. [2021-07-06 20:36:02,629 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-07-06 20:36:02,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 116 states and 168 transitions. [2021-07-06 20:36:02,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2021-07-06 20:36:02,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-07-06 20:36:02,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 168 transitions. [2021-07-06 20:36:02,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:02,634 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-07-06 20:36:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 168 transitions. [2021-07-06 20:36:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-07-06 20:36:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.4482758620689655) internal successors, (168), 115 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2021-07-06 20:36:02,653 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-07-06 20:36:02,653 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 168 transitions. [2021-07-06 20:36:02,653 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:36:02,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 168 transitions. [2021-07-06 20:36:02,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-07-06 20:36:02,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:02,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:02,655 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,655 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,655 INFO L791 eck$LassoCheckResult]: Stem: 378#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 287#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 288#L558 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 283#L566 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 284#L522 assume 0 != main_~tmp~5; 285#L494 ~switchedOnBeforeTS~0 := 0; 318#L943 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 319#L964-1 [2021-07-06 20:36:02,655 INFO L793 eck$LassoCheckResult]: Loop: 319#L964-1 assume !false; 356#L268 assume test_~splverifierCounter~0 < 4; 357#L269 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 295#L277 assume !(0 != test_~tmp~4); 297#L277-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 370#L287 assume !(0 != test_~tmp___0~2); 348#L287-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 349#L297 assume 0 != test_~tmp___2~0; 372#L303-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 264#L175 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 265#L953 assume !(0 != ~pumpRunning~0); 292#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 341#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 342#L96-1 assume !(0 == ~pumpRunning~0); 362#L71 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 268#L398 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 269#L964 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 319#L964-1 [2021-07-06 20:36:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:36:02,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133549389] [2021-07-06 20:36:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,688 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,733 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,741 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash -477603702, now seen corresponding path program 1 times [2021-07-06 20:36:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468418177] [2021-07-06 20:36:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:02,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:02,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:36:02,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:02,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468418177] [2021-07-06 20:36:02,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468418177] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:02,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:02,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:36:02,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139577971] [2021-07-06 20:36:02,764 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:36:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:36:02,765 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:02,832 INFO L93 Difference]: Finished difference Result 165 states and 227 transitions. [2021-07-06 20:36:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:36:02,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 227 transitions. [2021-07-06 20:36:02,833 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-07-06 20:36:02,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 165 states and 227 transitions. [2021-07-06 20:36:02,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 165 [2021-07-06 20:36:02,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2021-07-06 20:36:02,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 227 transitions. [2021-07-06 20:36:02,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:02,836 INFO L681 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-07-06 20:36:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states and 227 transitions. [2021-07-06 20:36:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-07-06 20:36:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 1.3757575757575757) internal successors, (227), 164 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2021-07-06 20:36:02,842 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-07-06 20:36:02,842 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2021-07-06 20:36:02,842 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:36:02,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2021-07-06 20:36:02,843 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-07-06 20:36:02,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:02,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:02,844 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,844 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:02,844 INFO L791 eck$LassoCheckResult]: Stem: 674#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 576#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 577#L558 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 570#L566 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 571#L522 assume 0 != main_~tmp~5; 572#L494 ~switchedOnBeforeTS~0 := 0; 607#L943 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 608#L964-1 [2021-07-06 20:36:02,844 INFO L793 eck$LassoCheckResult]: Loop: 608#L964-1 assume !false; 645#L268 assume test_~splverifierCounter~0 < 4; 646#L269 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 582#L277 assume !(0 != test_~tmp~4); 584#L277-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 677#L287 assume !(0 != test_~tmp___0~2); 691#L287-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 688#L297 assume 0 != test_~tmp___2~0; 685#L303-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 551#L175 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 552#L953 assume !(0 != ~pumpRunning~0); 655#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 628#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 629#L96-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 618#L406-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 619#L411-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 616#L224-3 assume !(0 != isHighWaterLevel_~tmp~2);isHighWaterLevel_~tmp___0~0 := 1; 611#L224-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 555#L230-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 556#L100-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 651#L71 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 713#L398 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 711#L964 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 608#L964-1 [2021-07-06 20:36:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:36:02,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060159936] [2021-07-06 20:36:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,866 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:02,892 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:02,900 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:02,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1457587912, now seen corresponding path program 1 times [2021-07-06 20:36:02,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:02,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761489974] [2021-07-06 20:36:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:02,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:02,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:02,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:36:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:02,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:36:02,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:02,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761489974] [2021-07-06 20:36:02,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761489974] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:02,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:02,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:36:02,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062906867] [2021-07-06 20:36:02,922 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:02,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:02,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 20:36:02,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 20:36:02,922 INFO L87 Difference]: Start difference. First operand 165 states and 227 transitions. cyclomatic complexity: 64 Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:02,992 INFO L93 Difference]: Finished difference Result 317 states and 429 transitions. [2021-07-06 20:36:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 20:36:02,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 429 transitions. [2021-07-06 20:36:02,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2021-07-06 20:36:03,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 429 transitions. [2021-07-06 20:36:03,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-07-06 20:36:03,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-07-06 20:36:03,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 429 transitions. [2021-07-06 20:36:03,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:03,010 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 429 transitions. [2021-07-06 20:36:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 429 transitions. [2021-07-06 20:36:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 177. [2021-07-06 20:36:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.3502824858757063) internal successors, (239), 176 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2021-07-06 20:36:03,025 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 239 transitions. [2021-07-06 20:36:03,025 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 239 transitions. [2021-07-06 20:36:03,025 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:36:03,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 239 transitions. [2021-07-06 20:36:03,026 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-07-06 20:36:03,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:03,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:03,027 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:03,027 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:03,027 INFO L791 eck$LassoCheckResult]: Stem: 1172#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 1066#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 1067#L558 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1062#L566 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1063#L522 assume 0 != main_~tmp~5; 1064#L494 ~switchedOnBeforeTS~0 := 0; 1103#L943 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1104#L964-1 [2021-07-06 20:36:03,028 INFO L793 eck$LassoCheckResult]: Loop: 1104#L964-1 assume !false; 1193#L268 assume test_~splverifierCounter~0 < 4; 1192#L269 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 1191#L277 assume !(0 != test_~tmp~4); 1189#L277-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 1188#L287 assume !(0 != test_~tmp___0~2); 1186#L287-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 1185#L297 assume 0 != test_~tmp___2~0; 1166#L303-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1043#L175 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 1044#L953 assume !(0 != ~pumpRunning~0); 1155#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1126#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1127#L96-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1115#L406-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1116#L411-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 1113#L224-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1107#L224-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1047#L230-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1048#L100-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1150#L71 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1198#L398 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1197#L964 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 1104#L964-1 [2021-07-06 20:36:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-07-06 20:36:03,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:03,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223600813] [2021-07-06 20:36:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:03,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,078 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,102 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,108 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1062372022, now seen corresponding path program 1 times [2021-07-06 20:36:03,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:03,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010726000] [2021-07-06 20:36:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:03,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:36:03,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:03,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:36:03,123 INFO L142 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-07-06 20:36:03,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:03,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:03,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:03,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:03,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:36:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:36:03,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:36:03,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010726000] [2021-07-06 20:36:03,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010726000] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:36:03,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:36:03,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 20:36:03,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466103385] [2021-07-06 20:36:03,134 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:36:03,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:36:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:36:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:36:03,135 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:36:03,361 INFO L93 Difference]: Finished difference Result 736 states and 1011 transitions. [2021-07-06 20:36:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:36:03,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 736 states and 1011 transitions. [2021-07-06 20:36:03,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 505 [2021-07-06 20:36:03,369 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 736 states to 736 states and 1011 transitions. [2021-07-06 20:36:03,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 736 [2021-07-06 20:36:03,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 736 [2021-07-06 20:36:03,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 736 states and 1011 transitions. [2021-07-06 20:36:03,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:36:03,370 INFO L681 BuchiCegarLoop]: Abstraction has 736 states and 1011 transitions. [2021-07-06 20:36:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states and 1011 transitions. [2021-07-06 20:36:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 332. [2021-07-06 20:36:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 332 states have (on average 1.3463855421686748) internal successors, (447), 331 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:36:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 447 transitions. [2021-07-06 20:36:03,387 INFO L704 BuchiCegarLoop]: Abstraction has 332 states and 447 transitions. [2021-07-06 20:36:03,387 INFO L587 BuchiCegarLoop]: Abstraction has 332 states and 447 transitions. [2021-07-06 20:36:03,387 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-07-06 20:36:03,387 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 332 states and 447 transitions. [2021-07-06 20:36:03,388 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 234 [2021-07-06 20:36:03,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:36:03,388 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:36:03,390 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:03,390 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:36:03,390 INFO L791 eck$LassoCheckResult]: Stem: 2114#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 1999#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 2000#L558 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1995#L566 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1996#L522 assume 0 != main_~tmp~5; 1997#L494 ~switchedOnBeforeTS~0 := 0; 2036#L943 havoc test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2037#L964-1 [2021-07-06 20:36:03,391 INFO L793 eck$LassoCheckResult]: Loop: 2037#L964-1 assume !false; 2294#L268 assume test_~splverifierCounter~0 < 4; 2293#L269 test_~tmp~4 := test_#t~nondet28;havoc test_#t~nondet28; 2292#L277 assume !(0 != test_~tmp~4); 2290#L277-1 test_~tmp___0~2 := test_#t~nondet29;havoc test_#t~nondet29; 2289#L287 assume !(0 != test_~tmp___0~2); 2287#L287-1 test_~tmp___2~0 := test_#t~nondet30;havoc test_#t~nondet30; 2286#L297 assume 0 != test_~tmp___2~0; 2249#L303-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2248#L175 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 2247#L953 assume !(0 != ~pumpRunning~0); 2246#L64 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2062#L122 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2063#L96-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2049#L406-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2050#L411-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 2045#L224-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 2042#L224-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1979#L230-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1980#L100-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2087#L71 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 2117#L398 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 2090#L964 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2091#L175-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 2122#L968 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 2037#L964-1 [2021-07-06 20:36:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-07-06 20:36:03,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:03,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386958858] [2021-07-06 20:36:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:03,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,407 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,426 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:03,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1262715471, now seen corresponding path program 1 times [2021-07-06 20:36:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:03,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079193999] [2021-07-06 20:36:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:03,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,437 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,439 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:36:03,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1326141653, now seen corresponding path program 1 times [2021-07-06 20:36:03,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:36:03,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108322655] [2021-07-06 20:36:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:36:03,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:36:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,457 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:36:03,491 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:36:03,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:36:03,611 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-06 20:36:03,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:03,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-06 20:36:43,802 WARN L205 SmtUtils]: Spent 40.13 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:36:43,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:36:43,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:37:03,481 WARN L205 SmtUtils]: Spent 19.63 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:37:03,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:37:03 BoogieIcfgContainer [2021-07-06 20:37:03,582 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:37:03,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:37:03,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:37:03,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:37:03,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:36:01" (3/4) ... [2021-07-06 20:37:03,585 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:37:03,611 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:37:03,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:37:03,617 INFO L168 Benchmark]: Toolchain (without parser) took 62942.97 ms. Allocated memory was 65.0 MB in the beginning and 138.4 MB in the end (delta: 73.4 MB). Free memory was 44.7 MB in the beginning and 63.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,617 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 65.0 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:37:03,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 39.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.10 ms. Allocated memory is still 65.0 MB. Free memory was 38.9 MB in the beginning and 35.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,618 INFO L168 Benchmark]: Boogie Preprocessor took 34.60 ms. Allocated memory is still 65.0 MB. Free memory was 35.4 MB in the beginning and 32.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,618 INFO L168 Benchmark]: RCFGBuilder took 747.16 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 32.7 MB in the beginning and 50.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,618 INFO L168 Benchmark]: BuchiAutomizer took 61654.05 ms. Allocated memory was 79.7 MB in the beginning and 138.4 MB in the end (delta: 58.7 MB). Free memory was 50.8 MB in the beginning and 66.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,618 INFO L168 Benchmark]: Witness Printer took 28.84 ms. Allocated memory is still 138.4 MB. Free memory was 66.9 MB in the beginning and 63.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:37:03,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 65.0 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 39.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.10 ms. Allocated memory is still 65.0 MB. Free memory was 38.9 MB in the beginning and 35.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.60 ms. Allocated memory is still 65.0 MB. Free memory was 35.4 MB in the beginning and 32.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 747.16 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 32.7 MB in the beginning and 50.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 61654.05 ms. Allocated memory was 79.7 MB in the beginning and 138.4 MB in the end (delta: 58.7 MB). Free memory was 50.8 MB in the beginning and 66.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.3 MB. Max. memory is 16.1 GB. * Witness Printer took 28.84 ms. Allocated memory is still 138.4 MB. Free memory was 66.9 MB in the beginning and 63.8 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 332 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 61.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 60.9s. Construction of modules took 0.3s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 47.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 544 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 332 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 788 SDtfs, 1678 SDslu, 1102 SDs, 0 SdLazy, 249 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 303.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 267]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3283} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=3283, NULL=3289, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a49a78d=0, NULL=3285, NULL=3294, methaneLevelCritical=0, retValue_acc=1, tmp=0, NULL=3292, retValue_acc=0, NULL=0, tmp___1=0, NULL=3301, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42b36898=0, NULL=3305, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68d5c6ca=0, cleanupTimeShifts=4, NULL=3290, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b5dbf=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5de91452=0, NULL=3297, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18908507=0, NULL=0, NULL=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e1d156d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b72648c=57, NULL=0, NULL=0, NULL=3296, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b3aeb5d=0, NULL=0, NULL=0, tmp___0=0, retValue_acc=1, NULL=3307, NULL=3300, tmp=0, head=0, NULL=0, NULL=0, NULL=3302, NULL=3286, NULL=3287, NULL=0, NULL=3295, retValue_acc=0, NULL=3308, NULL=3298, tmp=1, tmp___0=0, NULL=0, NULL=3304, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50a3bf13=0, switchedOnBeforeTS=0, NULL=3284, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2706d249=0, \result=0, NULL=3303, \result=0, tmp___0=0, NULL=3309, NULL=0, NULL=3306, NULL=0, NULL=3310, NULL=0, NULL=3291, NULL=3288, tmp___2=57, splverifierCounter=0, NULL=0, NULL=3299, retValue_acc=0, NULL=3311, NULL=0, NULL=0, NULL=3293} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L52] int pumpRunning = 0; [L53] int systemActive = 1; [L323] int waterLevel = 1; [L324] int methaneLevelCritical = 0; [L435] int cleanupTimeShifts = 4; [L740] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L937] int switchedOnBeforeTS ; [L513] int retValue_acc ; [L514] int tmp ; [L562] int retValue_acc ; [L565] retValue_acc = 1 [L566] return (retValue_acc); [L520] tmp = valid_product() [L522] COND TRUE \read(tmp) [L942] switchedOnBeforeTS = 0 [L258] int splverifierCounter ; [L259] int tmp ; [L260] int tmp___0 ; [L261] int tmp___1 ; [L262] int tmp___2 ; [L265] splverifierCounter = 0 Loop: [L267] COND TRUE 1 [L269] COND TRUE splverifierCounter < 4 [L275] tmp = __VERIFIER_nondet_int() [L277] COND FALSE !(\read(tmp)) [L285] tmp___0 = __VERIFIER_nondet_int() [L287] COND FALSE !(\read(tmp___0)) [L295] tmp___2 = __VERIFIER_nondet_int() [L297] COND TRUE \read(tmp___2) [L171] int retValue_acc ; [L174] retValue_acc = pumpRunning [L175] return (retValue_acc); [L951] switchedOnBeforeTS = isPumpRunning() [L64] COND FALSE !(\read(pumpRunning)) [L71] COND TRUE \read(systemActive) [L119] int tmp ; [L122] COND FALSE !(\read(pumpRunning)) [L93] int tmp ; [L96] COND TRUE ! pumpRunning [L216] int retValue_acc ; [L217] int tmp ; [L218] int tmp___0 ; [L403] int retValue_acc ; [L406] COND TRUE waterLevel < 2 [L407] retValue_acc = 1 [L408] return (retValue_acc); [L222] tmp = isHighWaterSensorDry() [L224] COND TRUE \read(tmp) [L225] tmp___0 = 0 [L229] retValue_acc = tmp___0 [L230] return (retValue_acc); [L98] tmp = isHighWaterLevel() [L100] COND FALSE !(\read(tmp)) [L957] int tmp ; [L958] int tmp___0 ; [L394] int retValue_acc ; [L397] retValue_acc = waterLevel [L398] return (retValue_acc); [L962] tmp = getWaterLevel() [L964] COND TRUE tmp != 2 [L171] int retValue_acc ; [L174] retValue_acc = pumpRunning [L175] return (retValue_acc); [L966] tmp___0 = isPumpRunning() [L968] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:37:03,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...