./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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_spec3_product56.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 c0bb085f1a2e359e53f6064743019c071065ce678b1651991605b55849e9a12f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:40:54,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:40:54,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:40:54,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:40:54,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:40:54,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:40:54,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:40:54,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:40:54,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:40:54,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:40:54,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:40:54,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:40:54,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:40:54,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:40:54,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:40:54,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:40:54,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:40:54,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:40:54,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:40:54,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:40:54,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:40:54,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:40:54,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:40:54,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:40:54,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:40:54,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:40:54,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:40:54,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:40:54,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:40:54,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:40:54,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:40:54,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:40:54,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:40:54,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:40:54,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:40:54,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:40:54,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:40:54,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:40:54,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:40:54,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:40:54,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:40:54,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:40:54,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:40:54,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:40:54,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:40:54,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:40:54,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:40:54,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:40:54,696 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:40:54,697 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:40:54,697 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:40:54,697 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:40:54,697 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:40:54,697 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:40:54,697 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:40:54,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:40:54,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:40:54,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:40:54,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:40:54,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:40:54,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:40:54,700 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:40:54,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:40:54,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:40:54,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:40:54,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:40:54,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:40:54,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:40:54,701 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:40:54,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0bb085f1a2e359e53f6064743019c071065ce678b1651991605b55849e9a12f [2021-12-28 09:40:54,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:40:54,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:40:54,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:40:54,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:40:54,995 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:40:54,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2021-12-28 09:40:55,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a71fd60/fce6dd8066a74bc0834a120635ecaa6d/FLAGccfd31f51 [2021-12-28 09:40:55,420 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:40:55,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2021-12-28 09:40:55,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a71fd60/fce6dd8066a74bc0834a120635ecaa6d/FLAGccfd31f51 [2021-12-28 09:40:55,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35a71fd60/fce6dd8066a74bc0834a120635ecaa6d [2021-12-28 09:40:55,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:40:55,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:40:55,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:55,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:40:55,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:40:55,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:55" (1/1) ... [2021-12-28 09:40:55,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a9359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:55, skipping insertion in model container [2021-12-28 09:40:55,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:55" (1/1) ... [2021-12-28 09:40:55,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:40:55,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:40:56,169 WARN L230 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_spec3_product56.cil.c[19275,19288] [2021-12-28 09:40:56,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:56,194 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:40:56,291 WARN L230 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_spec3_product56.cil.c[19275,19288] [2021-12-28 09:40:56,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:56,314 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:40:56,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56 WrapperNode [2021-12-28 09:40:56,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:56,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:56,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:40:56,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:40:56,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,456 INFO L137 Inliner]: procedures = 58, calls = 162, calls flagged for inlining = 59, calls inlined = 143, statements flattened = 1044 [2021-12-28 09:40:56,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:56,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:40:56,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:40:56,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:40:56,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:40:56,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:40:56,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:40:56,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:40:56,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (1/1) ... [2021-12-28 09:40:56,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:40:56,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:40:56,552 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) [2021-12-28 09:40:56,581 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 [2021-12-28 09:40:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:40:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:40:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:40:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:40:56,642 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:40:56,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:40:57,014 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:40:57,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:40:57,021 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 09:40:57,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:57 BoogieIcfgContainer [2021-12-28 09:40:57,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:40:57,023 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:40:57,023 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:40:57,025 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:40:57,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:57,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:40:55" (1/3) ... [2021-12-28 09:40:57,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58dde319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:57, skipping insertion in model container [2021-12-28 09:40:57,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:57,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:56" (2/3) ... [2021-12-28 09:40:57,027 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58dde319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:57, skipping insertion in model container [2021-12-28 09:40:57,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:57,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:57" (3/3) ... [2021-12-28 09:40:57,028 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2021-12-28 09:40:57,054 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:40:57,055 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:40:57,055 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:40:57,055 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:40:57,055 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:40:57,055 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:40:57,055 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:40:57,055 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:40:57,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 281 states, 280 states have (on average 1.3714285714285714) internal successors, (384), 280 states have internal predecessors, (384), 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) [2021-12-28 09:40:57,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 185 [2021-12-28 09:40:57,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:57,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:57,101 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,101 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:40:57,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 281 states, 280 states have (on average 1.3714285714285714) internal successors, (384), 280 states have internal predecessors, (384), 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) [2021-12-28 09:40:57,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 185 [2021-12-28 09:40:57,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:57,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:57,109 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,109 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,112 INFO L791 eck$LassoCheckResult]: Stem: 261#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 185#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 151#L542true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 231#L535true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 139#L550true main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 59#L140true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 251#L113true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 199#L960-2true [2021-12-28 09:40:57,112 INFO L793 eck$LassoCheckResult]: Loop: 199#L960-2true assume !false; 178#L961true assume test_~splverifierCounter~0#1 < 4; 23#L962true test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 19#L970true assume !(0 != test_~tmp~10#1); 202#L970-2true test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 235#L980true assume !(0 != test_~tmp___0~3#1); 114#L980-2true test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 94#L990true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 266#L946true assume { :end_inline_startSystem } true; 55#L998-2true assume { :begin_inline_timeShift } true; 188#L711true assume !(0 != ~pumpRunning~0); 70#L711-2true assume !(0 != ~systemActive~0); 278#L718-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_#t~ret30#1, __utac_acc__Specification3_spec__1_#t~ret31#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 133#L640-1true __utac_acc__Specification3_spec__1_#t~ret29#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret29#1;havoc __utac_acc__Specification3_spec__1_#t~ret29#1; 282#L568true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 128#L574-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 68#L728true assume { :end_inline_timeShift } true; 199#L960-2true [2021-12-28 09:40:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-28 09:40:57,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448056249] [2021-12-28 09:40:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1578456019, now seen corresponding path program 1 times [2021-12-28 09:40:57,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043708327] [2021-12-28 09:40:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:57,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:57,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043708327] [2021-12-28 09:40:57,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043708327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:57,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:57,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:40:57,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369178223] [2021-12-28 09:40:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:57,257 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:40:57,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:40:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:40:57,278 INFO L87 Difference]: Start difference. First operand has 281 states, 280 states have (on average 1.3714285714285714) internal successors, (384), 280 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) 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) [2021-12-28 09:40:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:57,352 INFO L93 Difference]: Finished difference Result 547 states and 735 transitions. [2021-12-28 09:40:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:40:57,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 547 states and 735 transitions. [2021-12-28 09:40:57,366 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 360 [2021-12-28 09:40:57,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 547 states to 527 states and 714 transitions. [2021-12-28 09:40:57,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 527 [2021-12-28 09:40:57,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 527 [2021-12-28 09:40:57,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 527 states and 714 transitions. [2021-12-28 09:40:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:57,382 INFO L681 BuchiCegarLoop]: Abstraction has 527 states and 714 transitions. [2021-12-28 09:40:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states and 714 transitions. [2021-12-28 09:40:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 524. [2021-12-28 09:40:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 524 states have (on average 1.3549618320610688) internal successors, (710), 523 states have internal predecessors, (710), 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) [2021-12-28 09:40:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 710 transitions. [2021-12-28 09:40:57,429 INFO L704 BuchiCegarLoop]: Abstraction has 524 states and 710 transitions. [2021-12-28 09:40:57,429 INFO L587 BuchiCegarLoop]: Abstraction has 524 states and 710 transitions. [2021-12-28 09:40:57,429 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:40:57,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 524 states and 710 transitions. [2021-12-28 09:40:57,432 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 357 [2021-12-28 09:40:57,432 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:57,432 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:57,434 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,434 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] [2021-12-28 09:40:57,434 INFO L791 eck$LassoCheckResult]: Stem: 1145#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1095#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1068#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1069#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 1057#L550 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 945#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 946#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 960#L960-2 [2021-12-28 09:40:57,435 INFO L793 eck$LassoCheckResult]: Loop: 960#L960-2 assume !false; 1088#L961 assume test_~splverifierCounter~0#1 < 4; 1089#L962 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1208#L970 assume !(0 != test_~tmp~10#1); 1206#L970-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 1130#L980 assume !(0 != test_~tmp___0~3#1); 951#L980-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 1022#L990 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 1202#L998 assume !(0 != test_~tmp___1~1#1); 1146#L998-2 assume { :begin_inline_timeShift } true; 1097#L711 assume !(0 != ~pumpRunning~0); 963#L711-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 964#L795 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret40#1, isMethaneAlarm_~retValue_acc~10#1;havoc isMethaneAlarm_~retValue_acc~10#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 1065#L640 isMethaneAlarm_#t~ret40#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~10#1 := isMethaneAlarm_#t~ret40#1;havoc isMethaneAlarm_#t~ret40#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~10#1; 1188#L839 processEnvironment_#t~ret39#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~7#1 := processEnvironment_#t~ret39#1;havoc processEnvironment_#t~ret39#1; 1185#L799 assume 0 != processEnvironment_~tmp~7#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 1135#L829-1 assume { :end_inline_deactivatePump } true; 914#L795-1 assume { :end_inline_processEnvironment } true; 1181#L718-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_#t~ret30#1, __utac_acc__Specification3_spec__1_#t~ret31#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 1180#L640-1 __utac_acc__Specification3_spec__1_#t~ret29#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret29#1;havoc __utac_acc__Specification3_spec__1_#t~ret29#1; 1168#L568 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 1041#L574-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 959#L728 assume { :end_inline_timeShift } true; 960#L960-2 [2021-12-28 09:40:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-28 09:40:57,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850162249] [2021-12-28 09:40:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,466 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 198530698, now seen corresponding path program 1 times [2021-12-28 09:40:57,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804179803] [2021-12-28 09:40:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:57,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804179803] [2021-12-28 09:40:57,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804179803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:57,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:57,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:40:57,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349306429] [2021-12-28 09:40:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:57,526 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:40:57,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:40:57,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:40:57,527 INFO L87 Difference]: Start difference. First operand 524 states and 710 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-28 09:40:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:57,622 INFO L93 Difference]: Finished difference Result 558 states and 719 transitions. [2021-12-28 09:40:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:40:57,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 558 states and 719 transitions. [2021-12-28 09:40:57,625 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 391 [2021-12-28 09:40:57,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 558 states to 558 states and 719 transitions. [2021-12-28 09:40:57,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 558 [2021-12-28 09:40:57,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 558 [2021-12-28 09:40:57,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 558 states and 719 transitions. [2021-12-28 09:40:57,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:57,629 INFO L681 BuchiCegarLoop]: Abstraction has 558 states and 719 transitions. [2021-12-28 09:40:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states and 719 transitions. [2021-12-28 09:40:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-12-28 09:40:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 558 states have (on average 1.2885304659498207) internal successors, (719), 557 states have internal predecessors, (719), 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) [2021-12-28 09:40:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 719 transitions. [2021-12-28 09:40:57,641 INFO L704 BuchiCegarLoop]: Abstraction has 558 states and 719 transitions. [2021-12-28 09:40:57,642 INFO L587 BuchiCegarLoop]: Abstraction has 558 states and 719 transitions. [2021-12-28 09:40:57,642 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:40:57,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 558 states and 719 transitions. [2021-12-28 09:40:57,644 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 391 [2021-12-28 09:40:57,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:57,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:57,646 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,646 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, 1, 1, 1, 1, 1] [2021-12-28 09:40:57,646 INFO L791 eck$LassoCheckResult]: Stem: 2172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 2108#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2109#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 2097#L550 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 2009#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 2010#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2025#L960-2 [2021-12-28 09:40:57,646 INFO L793 eck$LassoCheckResult]: Loop: 2025#L960-2 assume !false; 2128#L961 assume test_~splverifierCounter~0#1 < 4; 1956#L962 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1947#L970 assume !(0 != test_~tmp~10#1); 1930#L970-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 2149#L980 assume !(0 != test_~tmp___0~3#1); 2015#L980-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 2056#L990 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 2057#L998 assume !(0 != test_~tmp___1~1#1); 2002#L998-2 assume { :begin_inline_timeShift } true; 2003#L711 assume !(0 != ~pumpRunning~0); 2137#L711-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 2345#L795 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret38#1, processEnvironment__wrappee__lowWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6#1; 2343#L769-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret37#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 2341#L743-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 2339#L680-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 2337#L685-3 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 2335#L897-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 2333#L897-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 2331#L903-3 processEnvironment__wrappee__highWaterSensor_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret37#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret37#1; 2329#L747-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1944#L735-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1945#L743-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2430#L769-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2165#L795-1 assume { :end_inline_processEnvironment } true; 2429#L718-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_#t~ret30#1, __utac_acc__Specification3_spec__1_#t~ret31#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 2428#L640-1 __utac_acc__Specification3_spec__1_#t~ret29#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret29#1;havoc __utac_acc__Specification3_spec__1_#t~ret29#1; 2424#L568 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 2420#L574-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 2024#L728 assume { :end_inline_timeShift } true; 2025#L960-2 [2021-12-28 09:40:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-28 09:40:57,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070272694] [2021-12-28 09:40:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,674 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,691 INFO L85 PathProgramCache]: Analyzing trace with hash -470780770, now seen corresponding path program 1 times [2021-12-28 09:40:57,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9016307] [2021-12-28 09:40:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,708 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:57,721 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash -73589918, now seen corresponding path program 1 times [2021-12-28 09:40:57,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:57,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408521364] [2021-12-28 09:40:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:57,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:57,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:57,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408521364] [2021-12-28 09:40:57,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408521364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:57,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:57,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:40:57,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797864828] [2021-12-28 09:40:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:58,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 09:40:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 09:40:58,029 INFO L87 Difference]: Start difference. First operand 558 states and 719 transitions. cyclomatic complexity: 164 Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-12-28 09:40:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:58,138 INFO L93 Difference]: Finished difference Result 1932 states and 2473 transitions. [2021-12-28 09:40:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:40:58,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1932 states and 2473 transitions. [2021-12-28 09:40:58,153 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 1438 [2021-12-28 09:40:58,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1932 states to 1932 states and 2473 transitions. [2021-12-28 09:40:58,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1932 [2021-12-28 09:40:58,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1932 [2021-12-28 09:40:58,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1932 states and 2473 transitions. [2021-12-28 09:40:58,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:58,164 INFO L681 BuchiCegarLoop]: Abstraction has 1932 states and 2473 transitions. [2021-12-28 09:40:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states and 2473 transitions. [2021-12-28 09:40:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1109. [2021-12-28 09:40:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1109 states have (on average 1.2759242560865645) internal successors, (1415), 1108 states have internal predecessors, (1415), 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) [2021-12-28 09:40:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1415 transitions. [2021-12-28 09:40:58,178 INFO L704 BuchiCegarLoop]: Abstraction has 1109 states and 1415 transitions. [2021-12-28 09:40:58,178 INFO L587 BuchiCegarLoop]: Abstraction has 1109 states and 1415 transitions. [2021-12-28 09:40:58,178 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:40:58,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1109 states and 1415 transitions. [2021-12-28 09:40:58,182 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 782 [2021-12-28 09:40:58,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:58,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:58,183 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:58,183 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:58,183 INFO L791 eck$LassoCheckResult]: Stem: 4696#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 4657#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 4626#L542 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4627#L535 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 4615#L550 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 4517#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 4518#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 4690#L960-2 [2021-12-28 09:40:58,183 INFO L793 eck$LassoCheckResult]: Loop: 4690#L960-2 assume !false; 5063#L961 assume test_~splverifierCounter~0#1 < 4; 4464#L962 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 4455#L970 assume !(0 != test_~tmp~10#1); 4438#L970-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 4674#L980 assume !(0 != test_~tmp___0~3#1); 4522#L980-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 4566#L990 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 4567#L998 assume !(0 != test_~tmp___1~1#1); 4508#L998-2 assume { :begin_inline_timeShift } true; 4509#L711 assume !(0 != ~pumpRunning~0); 5131#L711-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret39#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 5122#L795 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret38#1, processEnvironment__wrappee__lowWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6#1; 5121#L769-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret37#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 5120#L743-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 5119#L680-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 5118#L685-3 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 5117#L897-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 5116#L897-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 5115#L903-3 processEnvironment__wrappee__highWaterSensor_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret37#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret37#1; 5114#L747-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 4453#L735-6 assume { :end_inline_processEnvironment__wrappee__base } true; 4454#L743-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 5141#L769-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 5139#L795-1 assume { :end_inline_processEnvironment } true; 4702#L718-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret29#1, __utac_acc__Specification3_spec__1_#t~ret30#1, __utac_acc__Specification3_spec__1_#t~ret31#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 4606#L640-1 __utac_acc__Specification3_spec__1_#t~ret29#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret29#1;havoc __utac_acc__Specification3_spec__1_#t~ret29#1; 4607#L568 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~7#1;havoc getWaterLevel_~retValue_acc~7#1;getWaterLevel_~retValue_acc~7#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~7#1; 4704#L672 __utac_acc__Specification3_spec__1_#t~ret30#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret30#1;havoc __utac_acc__Specification3_spec__1_#t~ret30#1; 5067#L574 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 5065#L574-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 5064#L728 assume { :end_inline_timeShift } true; 4690#L960-2 [2021-12-28 09:40:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-28 09:40:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:58,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314699099] [2021-12-28 09:40:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:58,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1447496175, now seen corresponding path program 1 times [2021-12-28 09:40:58,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:58,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954302087] [2021-12-28 09:40:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:58,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1999176747, now seen corresponding path program 1 times [2021-12-28 09:40:58,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334696046] [2021-12-28 09:40:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:58,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:58,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:00,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:41:00 BoogieIcfgContainer [2021-12-28 09:41:00,647 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:41:00,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:41:00,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:41:00,648 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:41:00,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:57" (3/4) ... [2021-12-28 09:41:00,650 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:41:00,738 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:41:00,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:41:00,739 INFO L158 Benchmark]: Toolchain (without parser) took 4943.13ms. Allocated memory was 56.6MB in the beginning and 100.7MB in the end (delta: 44.0MB). Free memory was 35.4MB in the beginning and 64.1MB in the end (delta: -28.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,739 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:41:00,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.65ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 33.2MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.06ms. Allocated memory is still 56.6MB. Free memory was 33.1MB in the beginning and 28.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,740 INFO L158 Benchmark]: Boogie Preprocessor took 65.33ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.6MB in the beginning and 50.8MB in the end (delta: -22.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,741 INFO L158 Benchmark]: RCFGBuilder took 498.48ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 36.7MB in the end (delta: 14.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,741 INFO L158 Benchmark]: BuchiAutomizer took 3624.32ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 36.7MB in the beginning and 67.2MB in the end (delta: -30.4MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,742 INFO L158 Benchmark]: Witness Printer took 90.47ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 64.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:41:00,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.65ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 33.2MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.06ms. Allocated memory is still 56.6MB. Free memory was 33.1MB in the beginning and 28.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.33ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.6MB in the beginning and 50.8MB in the end (delta: -22.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * RCFGBuilder took 498.48ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 36.7MB in the end (delta: 14.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 3624.32ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 36.7MB in the beginning and 67.2MB in the end (delta: -30.4MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * Witness Printer took 90.47ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 64.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 1109 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 826 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 1109 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1699 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1699 mSDsluCounter, 2971 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1876 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 1095 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 960]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ccf1dc7=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e1cbaac=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@711badd0=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7214f4c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fda3bf0=0, retValue_acc=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2dd5cf8e=0, retValue_acc=1, tmp=0, methaneLevelCritical=0, tmp___0=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f643089=0, \result=0, retValue_acc=1, tmp=0, retValue_acc=0, tmp=1, \result=1, \result=1, retValue_acc=1, tmp___1=0, tmp___2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56cbd703=0, cleanupTimeShifts=4, tmp=1, \result=0, tmp=0, head=0, \result=1, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2837ca04=0, tmp=0, tmp___0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@966f526=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47525c52=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38d30dea=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 960]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L323] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L597] int waterLevel = 1; [L598] int methaneLevelCritical = 0; [L704] int pumpRunning = 0; [L705] int systemActive = 1; [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L951] int splverifierCounter ; [L952] int tmp ; [L953] int tmp___0 ; [L954] int tmp___1 ; [L955] int tmp___2 ; [L958] splverifierCounter = 0 Loop: [L960] COND TRUE 1 [L962] COND TRUE splverifierCounter < 4 [L968] tmp = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp)) [L978] tmp___0 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___0)) [L988] tmp___2 = __VERIFIER_nondet_int() [L990] COND FALSE !(\read(tmp___2)) [L996] tmp___1 = __VERIFIER_nondet_int() [L998] COND FALSE !(\read(tmp___1)) [L1007] CALL timeShift() [L711] COND FALSE !(\read(pumpRunning)) [L718] COND TRUE \read(systemActive) [L720] CALL processEnvironment() [L792] int tmp ; [L795] COND FALSE !(\read(pumpRunning)) [L810] CALL processEnvironment__wrappee__lowWaterSensor() [L766] int tmp ; [L769] COND FALSE !(\read(pumpRunning)) [L784] CALL processEnvironment__wrappee__highWaterSensor() [L740] int tmp ; [L743] COND TRUE ! pumpRunning [L745] CALL, EXPR isHighWaterLevel() [L889] int retValue_acc ; [L890] int tmp ; [L891] int tmp___0 ; [L895] CALL, EXPR isHighWaterSensorDry() [L677] int retValue_acc ; [L680] COND TRUE waterLevel < 2 [L681] retValue_acc = 1 [L682] return (retValue_acc); [L895] RET, EXPR isHighWaterSensorDry() [L895] tmp = isHighWaterSensorDry() [L897] COND TRUE \read(tmp) [L898] tmp___0 = 0 [L902] retValue_acc = tmp___0 [L903] return (retValue_acc); [L745] RET, EXPR isHighWaterLevel() [L745] tmp = isHighWaterLevel() [L747] COND FALSE !(\read(tmp)) [L753] FCALL processEnvironment__wrappee__base() [L784] RET processEnvironment__wrappee__highWaterSensor() [L810] RET processEnvironment__wrappee__lowWaterSensor() [L720] RET processEnvironment() [L726] CALL __utac_acc__Specification3_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; [L566] CALL, EXPR isMethaneLevelCritical() [L636] int retValue_acc ; [L639] retValue_acc = methaneLevelCritical [L640] return (retValue_acc); [L566] RET, EXPR isMethaneLevelCritical() [L566] tmp = isMethaneLevelCritical() [L568] COND FALSE !(\read(tmp)) [L572] CALL, EXPR getWaterLevel() [L668] int retValue_acc ; [L671] retValue_acc = waterLevel [L672] return (retValue_acc); [L572] RET, EXPR getWaterLevel() [L572] tmp___0 = getWaterLevel() [L574] COND FALSE !(tmp___0 == 2) [L726] RET __utac_acc__Specification3_spec__1() [L1007] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:41:00,808 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)