./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78c3727bd3b2d1a7a3f467704564f87e93e64a9d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:13:14,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:13:14,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:13:14,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:13:14,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:13:14,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:13:14,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:13:14,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:13:14,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:13:14,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:13:14,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:13:14,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:13:14,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:13:14,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:13:14,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:13:14,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:13:14,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:13:14,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:13:14,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:13:14,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:13:14,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:13:14,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:13:14,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:13:14,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:13:14,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:13:14,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:13:14,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:13:14,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:13:14,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:13:14,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:13:14,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:13:14,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:13:14,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:13:14,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:13:14,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:13:14,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:13:14,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:13:14,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:13:14,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:13:14,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:13:14,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:13:14,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:13:14,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:13:14,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:13:14,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:13:14,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:13:14,979 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:13:14,980 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:13:14,980 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:13:14,980 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:13:14,980 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:13:14,980 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:13:14,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:13:14,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:13:14,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:13:14,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:13:14,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:13:14,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:13:14,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:13:14,983 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:13:14,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78c3727bd3b2d1a7a3f467704564f87e93e64a9d [2021-07-06 20:13:15,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:13:15,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:13:15,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:13:15,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:13:15,286 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:13:15,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-07-06 20:13:15,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663372d62/32fcd132d412428490111b1d5fea8a74/FLAG99836e369 [2021-07-06 20:13:15,745 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:13:15,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-07-06 20:13:15,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663372d62/32fcd132d412428490111b1d5fea8a74/FLAG99836e369 [2021-07-06 20:13:16,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663372d62/32fcd132d412428490111b1d5fea8a74 [2021-07-06 20:13:16,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:13:16,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:13:16,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:13:16,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:13:16,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:13:16,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e142810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16, skipping insertion in model container [2021-07-06 20:13:16,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:13:16,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:13:16,367 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_spec1_product40.cil.c[7066,7079] [2021-07-06 20:13:16,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:13:16,449 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:13:16,482 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_spec1_product40.cil.c[7066,7079] [2021-07-06 20:13:16,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:13:16,549 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:13:16,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16 WrapperNode [2021-07-06 20:13:16,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:13:16,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:13:16,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:13:16,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:13:16,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:13:16,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:13:16,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:13:16,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:13:16,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:13:16,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:13:16,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:13:16,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:13:16,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (1/1) ... [2021-07-06 20:13:16,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:13:16,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:13:16,710 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 20:13:16,712 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 20:13:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:13:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:13:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:13:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:13:17,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:13:17,436 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-07-06 20:13:17,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:17 BoogieIcfgContainer [2021-07-06 20:13:17,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:13:17,438 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:13:17,439 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:13:17,441 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:13:17,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:17,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:13:16" (1/3) ... [2021-07-06 20:13:17,442 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1273620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:13:17, skipping insertion in model container [2021-07-06 20:13:17,443 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:17,443 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:16" (2/3) ... [2021-07-06 20:13:17,443 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1273620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:13:17, skipping insertion in model container [2021-07-06 20:13:17,443 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:17,443 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:17" (3/3) ... [2021-07-06 20:13:17,444 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2021-07-06 20:13:17,482 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:13:17,482 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:13:17,483 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:13:17,483 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:13:17,483 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:13:17,483 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:13:17,483 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:13:17,483 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:13:17,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 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 20:13:17,524 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:13:17,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:17,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:17,531 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:17,531 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:17,531 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:13:17,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 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 20:13:17,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-07-06 20:13:17,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:17,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:17,555 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:17,555 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:17,558 INFO L791 eck$LassoCheckResult]: Stem: 88#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~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 5#L-1true havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 15#L475true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 18#L483true main_#t~ret33 := valid_product_#res;main_~tmp~5 := main_#t~ret33;havoc main_#t~ret33; 20#L439true assume 0 != main_~tmp~5; 72#L413true havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 83#L336-1true [2021-07-06 20:13:17,559 INFO L793 eck$LassoCheckResult]: Loop: 83#L336-1true assume !false; 109#L269true assume test_~splverifierCounter~0 < 4; 82#L270true test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 90#L278true assume !(0 != test_~tmp~3); 87#L278-1true test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 10#L288true assume !(0 != test_~tmp___0~1); 6#L288-1true test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 53#L298true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 62#L306-1true assume !(0 != ~pumpRunning~0); 51#L61true assume !(0 != ~systemActive~0); 112#L68true havoc __utac_acc__Specification1_spec__1_#t~ret31, __utac_acc__Specification1_spec__1_#t~ret32, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 24#L907-1true __utac_acc__Specification1_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret31;havoc __utac_acc__Specification1_spec__1_#t~ret31; 81#L336true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 83#L336-1true [2021-07-06 20:13:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:13:17,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:17,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349705457] [2021-07-06 20:13:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:17,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:17,749 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:17,822 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:17,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1670447604, now seen corresponding path program 1 times [2021-07-06 20:13:17,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:17,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718300068] [2021-07-06 20:13:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:17,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:13:17,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:17,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:17,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:17,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:17,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:17,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:17,897 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 20:13:17,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:13:17,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718300068] [2021-07-06 20:13:17,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718300068] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:13:17,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:13:17,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:13:17,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376929643] [2021-07-06 20:13:17,903 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:13:17,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:13:17,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:13:17,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:13:17,916 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 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) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 20:13:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:13:17,987 INFO L93 Difference]: Finished difference Result 214 states and 312 transitions. [2021-07-06 20:13:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:13:17,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 312 transitions. [2021-07-06 20:13:18,000 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 138 [2021-07-06 20:13:18,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 200 states and 297 transitions. [2021-07-06 20:13:18,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 200 [2021-07-06 20:13:18,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 200 [2021-07-06 20:13:18,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 297 transitions. [2021-07-06 20:13:18,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:13:18,012 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 297 transitions. [2021-07-06 20:13:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 297 transitions. [2021-07-06 20:13:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-07-06 20:13:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 1.4848484848484849) internal successors, (294), 197 states have internal predecessors, (294), 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 20:13:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 294 transitions. [2021-07-06 20:13:18,051 INFO L704 BuchiCegarLoop]: Abstraction has 198 states and 294 transitions. [2021-07-06 20:13:18,051 INFO L587 BuchiCegarLoop]: Abstraction has 198 states and 294 transitions. [2021-07-06 20:13:18,051 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:13:18,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 294 transitions. [2021-07-06 20:13:18,054 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2021-07-06 20:13:18,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:18,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:18,055 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:18,055 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:18,055 INFO L791 eck$LassoCheckResult]: Stem: 446#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~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 337#L-1 havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 338#L475 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 357#L483 main_#t~ret33 := valid_product_#res;main_~tmp~5 := main_#t~ret33;havoc main_#t~ret33; 362#L439 assume 0 != main_~tmp~5; 364#L413 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 342#L336-1 [2021-07-06 20:13:18,056 INFO L793 eck$LassoCheckResult]: Loop: 342#L336-1 assume !false; 462#L269 assume test_~splverifierCounter~0 < 4; 461#L270 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 460#L278 assume !(0 != test_~tmp~3); 444#L278-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 445#L288 assume !(0 != test_~tmp___0~1); 457#L288-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 456#L298 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 406#L306-1 assume !(0 != ~pumpRunning~0); 404#L61 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 405#L119 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 414#L93-1 assume !(0 == ~pumpRunning~0); 410#L68 havoc __utac_acc__Specification1_spec__1_#t~ret31, __utac_acc__Specification1_spec__1_#t~ret32, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 369#L907-1 __utac_acc__Specification1_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret31;havoc __utac_acc__Specification1_spec__1_#t~ret31; 370#L336 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 342#L336-1 [2021-07-06 20:13:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:18,057 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:13:18,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:18,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841869904] [2021-07-06 20:13:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:18,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,125 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,155 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1422660381, now seen corresponding path program 1 times [2021-07-06 20:13:18,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:18,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776269716] [2021-07-06 20:13:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:18,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:13:18,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:18,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:18,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:18,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:18,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:18,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:18,188 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 20:13:18,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:13:18,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776269716] [2021-07-06 20:13:18,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776269716] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:13:18,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:13:18,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:13:18,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126942935] [2021-07-06 20:13:18,190 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:13:18,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:13:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:13:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:13:18,191 INFO L87 Difference]: Start difference. First operand 198 states and 294 transitions. cyclomatic complexity: 99 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:13:18,268 INFO L93 Difference]: Finished difference Result 281 states and 394 transitions. [2021-07-06 20:13:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:13:18,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 281 states and 394 transitions. [2021-07-06 20:13:18,271 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 199 [2021-07-06 20:13:18,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 281 states to 281 states and 394 transitions. [2021-07-06 20:13:18,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-07-06 20:13:18,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2021-07-06 20:13:18,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 394 transitions. [2021-07-06 20:13:18,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:13:18,279 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-07-06 20:13:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 394 transitions. [2021-07-06 20:13:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-07-06 20:13:18,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 281 states have (on average 1.402135231316726) internal successors, (394), 280 states have internal predecessors, (394), 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 20:13:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 394 transitions. [2021-07-06 20:13:18,287 INFO L704 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-07-06 20:13:18,287 INFO L587 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-07-06 20:13:18,288 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:13:18,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 281 states and 394 transitions. [2021-07-06 20:13:18,289 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 199 [2021-07-06 20:13:18,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:18,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:18,291 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:18,291 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] [2021-07-06 20:13:18,291 INFO L791 eck$LassoCheckResult]: Stem: 929#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~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);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(25);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(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~ret33, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 823#L475 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 842#L483 main_#t~ret33 := valid_product_#res;main_~tmp~5 := main_#t~ret33;havoc main_#t~ret33; 847#L439 assume 0 != main_~tmp~5; 849#L413 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 827#L336-1 [2021-07-06 20:13:18,291 INFO L793 eck$LassoCheckResult]: Loop: 827#L336-1 assume !false; 926#L269 assume test_~splverifierCounter~0 < 4; 924#L270 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 925#L278 assume !(0 != test_~tmp~3); 863#L278-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 832#L288 assume !(0 != test_~tmp___0~1); 824#L288-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 825#L298 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 894#L306-1 assume !(0 != ~pumpRunning~0); 892#L61 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 893#L119 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 901#L93-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret26, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 914#L947-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 915#L952-1 isHighWaterLevel_#t~ret26 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret26;havoc isHighWaterLevel_#t~ret26; 873#L221-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 874#L221-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 868#L227-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 869#L97-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 898#L68 havoc __utac_acc__Specification1_spec__1_#t~ret31, __utac_acc__Specification1_spec__1_#t~ret32, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 854#L907-1 __utac_acc__Specification1_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret31;havoc __utac_acc__Specification1_spec__1_#t~ret31; 855#L336 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 827#L336-1 [2021-07-06 20:13:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:13:18,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:18,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83309977] [2021-07-06 20:13:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:18,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,323 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,342 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash 287627951, now seen corresponding path program 1 times [2021-07-06 20:13:18,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:18,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359146375] [2021-07-06 20:13:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:18,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,353 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,356 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:18,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:18,363 INFO L82 PathProgramCache]: Analyzing trace with hash 743699145, now seen corresponding path program 1 times [2021-07-06 20:13:18,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:18,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763596370] [2021-07-06 20:13:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:18,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,405 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:18,441 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:18,448 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:18,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:18,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-07-06 20:14:05,074 WARN L205 SmtUtils]: Spent 46.50 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:14:05,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:05,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:14:26,632 WARN L205 SmtUtils]: Spent 21.45 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:14:26,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:14:26 BoogieIcfgContainer [2021-07-06 20:14:26,779 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:14:26,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:14:26,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:14:26,780 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:14:26,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:17" (3/4) ... [2021-07-06 20:14:26,782 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:14:26,820 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:14:26,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:14:26,821 INFO L168 Benchmark]: Toolchain (without parser) took 70717.05 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 34.3 MB in the beginning and 46.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,821 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:14:26,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.29 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.79 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 39.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,822 INFO L168 Benchmark]: Boogie Preprocessor took 49.20 ms. Allocated memory is still 71.3 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,823 INFO L168 Benchmark]: RCFGBuilder took 758.73 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 34.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,823 INFO L168 Benchmark]: BuchiAutomizer took 69340.38 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 33.9 MB in the beginning and 48.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:26,823 INFO L168 Benchmark]: Witness Printer took 40.83 ms. Allocated memory is still 104.9 MB. Free memory was 48.7 MB in the beginning and 46.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:14:26,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.29 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.79 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 39.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.20 ms. Allocated memory is still 71.3 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 758.73 ms. Allocated memory is still 71.3 MB. Free memory was 37.4 MB in the beginning and 34.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 69340.38 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 33.9 MB in the beginning and 48.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. * Witness Printer took 40.83 ms. Allocated memory is still 104.9 MB. Free memory was 48.7 MB in the beginning and 46.6 MB in the end (delta: 2.1 MB). There was no memory consumed. 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 281 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 69.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 68.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 39.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 281 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 306 SDtfs, 262 SDslu, 206 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 268]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=29295} State at position 1 is {NULL=0, NULL=0, NULL=35415, NULL=0, NULL=29295, NULL=35406, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18c61876=0, NULL=35418, NULL=29298, NULL=35409, methaneLevelCritical=0, tmp=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=35401, NULL=0, cleanupTimeShifts=4, NULL=35398, NULL=0, waterLevel=1, NULL=35417, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a85ad83=0, \result=1, head=0, pumpRunning=0, NULL=35404, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@667772fd=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57b02e6f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c22268e=0, tmp=0, tmp=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@758d138=0, NULL=0, NULL=0, NULL=0, NULL=35405, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4092310a=0, NULL=0, tmp___0=0, NULL=35400, tmp=0, head=0, NULL=35412, NULL=35414, NULL=29299, NULL=0, retValue_acc=0, NULL=29297, NULL=35413, tmp___0=0, NULL=0, NULL=0, tmp___0=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6edbb36a=0, NULL=29300, NULL=35410, NULL=0, NULL=0, NULL=0, systemActive=1, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=35402, \result=0, NULL=35396, NULL=0, NULL=35408, NULL=0, NULL=0, retValue_acc=1, NULL=35407, NULL=35397, NULL=35403, tmp___2=70, retValue_acc=1, splverifierCounter=0, NULL=0, \result=0, NULL=35411, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@381db482=0, NULL=29296, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ea878ca=0, NULL=0, NULL=0, NULL=35416, NULL=35399} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L354] int cleanupTimeShifts = 4; [L666] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L864] int waterLevel = 1; [L865] int methaneLevelCritical = 0; [L430] int retValue_acc ; [L431] int tmp ; [L479] int retValue_acc ; [L482] retValue_acc = 1 [L483] return (retValue_acc); [L437] tmp = valid_product() [L439] COND TRUE \read(tmp) [L259] int splverifierCounter ; [L260] int tmp ; [L261] int tmp___0 ; [L262] int tmp___1 ; [L263] int tmp___2 ; [L266] splverifierCounter = 0 Loop: [L268] COND TRUE 1 [L270] COND TRUE splverifierCounter < 4 [L276] tmp = __VERIFIER_nondet_int() [L278] COND FALSE !(\read(tmp)) [L286] tmp___0 = __VERIFIER_nondet_int() [L288] COND FALSE !(\read(tmp___0)) [L296] tmp___2 = __VERIFIER_nondet_int() [L298] COND TRUE \read(tmp___2) [L250] systemActive = 1 [L61] COND FALSE !(\read(pumpRunning)) [L68] COND TRUE \read(systemActive) [L116] int tmp ; [L119] COND FALSE !(\read(pumpRunning)) [L90] int tmp ; [L93] COND TRUE ! pumpRunning [L213] int retValue_acc ; [L214] int tmp ; [L215] int tmp___0 ; [L944] int retValue_acc ; [L947] COND TRUE waterLevel < 2 [L948] retValue_acc = 1 [L949] return (retValue_acc); [L219] tmp = isHighWaterSensorDry() [L221] COND TRUE \read(tmp) [L222] tmp___0 = 0 [L226] retValue_acc = tmp___0 [L227] return (retValue_acc); [L95] tmp = isHighWaterLevel() [L97] COND FALSE !(\read(tmp)) [L329] int tmp ; [L330] int tmp___0 ; [L903] int retValue_acc ; [L906] retValue_acc = methaneLevelCritical [L907] return (retValue_acc); [L334] tmp = isMethaneLevelCritical() [L336] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:14:26,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...