./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product59.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 c9413dd793f1d68cdbd482b32ad92680b7805316 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:26:32,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:26:32,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:26:32,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:26:32,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:26:32,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:26:32,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:26:32,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:26:32,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:26:32,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:26:32,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:26:32,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:26:32,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:26:32,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:26:32,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:26:32,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:26:32,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:26:32,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:26:32,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:26:32,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:26:32,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:26:32,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:26:32,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:26:32,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:26:32,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:26:32,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:26:32,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:26:32,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:26:32,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:26:32,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:26:32,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:26:32,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:26:32,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:26:32,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:26:32,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:26:32,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:26:32,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:26:32,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:26:32,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:26:32,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:26:32,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:26:32,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:26:32,801 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:26:32,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:26:32,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:26:32,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:26:32,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:26:32,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:26:32,804 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:26:32,804 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:26:32,805 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:26:32,805 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:26:32,805 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:26:32,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:26:32,806 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:26:32,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:26:32,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:26:32,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:26:32,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:26:32,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:26:32,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:26:32,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:26:32,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:26:32,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:26:32,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:26:32,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:26:32,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:26:32,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:26:32,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:26:32,810 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:26:32,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9413dd793f1d68cdbd482b32ad92680b7805316 [2021-08-27 16:26:33,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:26:33,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:26:33,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:26:33,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:26:33,050 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:26:33,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c [2021-08-27 16:26:33,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072467614/6a3ce72de8ee441387d4e385ad8c0e2d/FLAG749eafc77 [2021-08-27 16:26:33,477 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:26:33,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c [2021-08-27 16:26:33,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072467614/6a3ce72de8ee441387d4e385ad8c0e2d/FLAG749eafc77 [2021-08-27 16:26:33,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072467614/6a3ce72de8ee441387d4e385ad8c0e2d [2021-08-27 16:26:33,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:26:33,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:26:33,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:33,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:26:33,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:26:33,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:33" (1/1) ... [2021-08-27 16:26:33,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74afa379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:33, skipping insertion in model container [2021-08-27 16:26:33,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:33" (1/1) ... [2021-08-27 16:26:33,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:26:33,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:26:34,127 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c[16678,16691] [2021-08-27 16:26:34,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:34,150 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:26:34,214 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c[16678,16691] [2021-08-27 16:26:34,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:34,257 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:26:34,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34 WrapperNode [2021-08-27 16:26:34,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:34,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:34,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:26:34,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:26:34,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:34,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:26:34,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:26:34,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:26:34,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:26:34,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:26:34,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:26:34,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:26:34,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:26:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:26:34,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:26:34,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:26:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:26:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:26:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:26:34,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:26:35,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:26:35,023 INFO L299 CfgBuilder]: Removed 210 assume(true) statements. [2021-08-27 16:26:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35 BoogieIcfgContainer [2021-08-27 16:26:35,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:26:35,025 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:26:35,025 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:26:35,027 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:26:35,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:26:33" (1/3) ... [2021-08-27 16:26:35,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c00f8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:35, skipping insertion in model container [2021-08-27 16:26:35,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (2/3) ... [2021-08-27 16:26:35,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c00f8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:35, skipping insertion in model container [2021-08-27 16:26:35,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35" (3/3) ... [2021-08-27 16:26:35,030 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2021-08-27 16:26:35,053 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:26:35,054 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:26:35,054 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:26:35,054 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:26:35,054 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:26:35,054 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:26:35,054 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:26:35,054 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:26:35,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,079 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-08-27 16:26:35,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,084 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:26:35,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-08-27 16:26:35,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,090 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,090 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,093 INFO L791 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 50#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~10;havoc main_~retValue_acc~11;havoc main_~tmp~10; 106#L1008true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 9#L1016true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 13#L972true assume 0 != main_~tmp~10; 112#L945true ~switchedOnBeforeTS~0 := 0; 79#L843true havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 83#L864-1true [2021-08-27 16:26:35,094 INFO L793 eck$LassoCheckResult]: Loop: 83#L864-1true assume !false; 18#L167true assume test_~splverifierCounter~0 < 4; 5#L168true test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 55#L176true assume !(0 != test_~tmp~0); 26#L176-1true test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 70#L186true assume !(0 != test_~tmp___0~0); 29#L186-1true test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 71#L196true assume 0 != test_~tmp___2~0; 116#L202-1true havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 124#L368true __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 53#L853true assume !(0 != ~pumpRunning~0); 34#L239true assume !(0 != ~systemActive~0); 72#L246true havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 96#L125true __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 131#L864true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 83#L864-1true [2021-08-27 16:26:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:26:35,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973806393] [2021-08-27 16:26:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,227 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,363 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash -239367595, now seen corresponding path program 1 times [2021-08-27 16:26:35,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113096907] [2021-08-27 16:26:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,371 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1694657615, now seen corresponding path program 1 times [2021-08-27 16:26:35,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9793462] [2021-08-27 16:26:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:35,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:35,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9793462] [2021-08-27 16:26:35,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9793462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:35,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:35,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:26:35,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605226076] [2021-08-27 16:26:35,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:26:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:26:35,588 INFO L87 Difference]: Start difference. First operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:35,732 INFO L93 Difference]: Finished difference Result 337 states and 478 transitions. [2021-08-27 16:26:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:35,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 337 states and 478 transitions. [2021-08-27 16:26:35,738 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 219 [2021-08-27 16:26:35,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 337 states to 316 states and 457 transitions. [2021-08-27 16:26:35,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 316 [2021-08-27 16:26:35,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 316 [2021-08-27 16:26:35,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 316 states and 457 transitions. [2021-08-27 16:26:35,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:35,746 INFO L681 BuchiCegarLoop]: Abstraction has 316 states and 457 transitions. [2021-08-27 16:26:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states and 457 transitions. [2021-08-27 16:26:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 185. [2021-08-27 16:26:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.4378378378378378) internal successors, (266), 184 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 266 transitions. [2021-08-27 16:26:35,768 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 266 transitions. [2021-08-27 16:26:35,768 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 266 transitions. [2021-08-27 16:26:35,769 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:26:35,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 266 transitions. [2021-08-27 16:26:35,770 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 128 [2021-08-27 16:26:35,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,771 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,771 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,771 INFO L791 eck$LassoCheckResult]: Stem: 632#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 578#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~10;havoc main_~retValue_acc~11;havoc main_~tmp~10; 579#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 504#L1016 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 505#L972 assume 0 != main_~tmp~10; 511#L945 ~switchedOnBeforeTS~0 := 0; 604#L843 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 553#L864-1 [2021-08-27 16:26:35,771 INFO L793 eck$LassoCheckResult]: Loop: 553#L864-1 assume !false; 520#L167 assume test_~splverifierCounter~0 < 4; 498#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 499#L176 assume !(0 != test_~tmp~0); 534#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 535#L186 assume !(0 != test_~tmp___0~0); 501#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 540#L196 assume 0 != test_~tmp___2~0; 601#L202-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 623#L368 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 583#L853 assume !(0 != ~pumpRunning~0); 549#L239 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 550#L297 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 526#L271-1 assume !(0 == ~pumpRunning~0); 528#L246 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 602#L125 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 613#L864 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 553#L864-1 [2021-08-27 16:26:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:26:35,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668127945] [2021-08-27 16:26:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,811 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1384715234, now seen corresponding path program 1 times [2021-08-27 16:26:35,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436373860] [2021-08-27 16:26:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:35,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:35,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436373860] [2021-08-27 16:26:35,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436373860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:35,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:35,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:35,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235645176] [2021-08-27 16:26:35,854 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:35,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:35,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:35,858 INFO L87 Difference]: Start difference. First operand 185 states and 266 transitions. cyclomatic complexity: 84 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:35,913 INFO L93 Difference]: Finished difference Result 232 states and 317 transitions. [2021-08-27 16:26:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:35,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 232 states and 317 transitions. [2021-08-27 16:26:35,915 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-08-27 16:26:35,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 232 states to 232 states and 317 transitions. [2021-08-27 16:26:35,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 232 [2021-08-27 16:26:35,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 232 [2021-08-27 16:26:35,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 232 states and 317 transitions. [2021-08-27 16:26:35,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:35,918 INFO L681 BuchiCegarLoop]: Abstraction has 232 states and 317 transitions. [2021-08-27 16:26:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states and 317 transitions. [2021-08-27 16:26:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-08-27 16:26:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 231 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 317 transitions. [2021-08-27 16:26:35,924 INFO L704 BuchiCegarLoop]: Abstraction has 232 states and 317 transitions. [2021-08-27 16:26:35,924 INFO L587 BuchiCegarLoop]: Abstraction has 232 states and 317 transitions. [2021-08-27 16:26:35,924 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:26:35,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 232 states and 317 transitions. [2021-08-27 16:26:35,925 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-08-27 16:26:35,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,925 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,926 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,926 INFO L791 eck$LassoCheckResult]: Stem: 1068#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1003#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~10;havoc main_~retValue_acc~11;havoc main_~tmp~10; 1004#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 927#L1016 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 928#L972 assume 0 != main_~tmp~10; 935#L945 ~switchedOnBeforeTS~0 := 0; 1034#L843 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1035#L864-1 [2021-08-27 16:26:35,926 INFO L793 eck$LassoCheckResult]: Loop: 1035#L864-1 assume !false; 1122#L167 assume test_~splverifierCounter~0 < 4; 921#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 922#L176 assume !(0 != test_~tmp~0); 958#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 959#L186 assume !(0 != test_~tmp___0~0); 924#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 964#L196 assume 0 != test_~tmp___2~0; 1027#L202-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1057#L368 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 1008#L853 assume !(0 != ~pumpRunning~0); 973#L239 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 974#L297 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 951#L271-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 952#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 990#L138-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 991#L417-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1031#L417-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1023#L423-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1024#L275-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 989#L246 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1127#L125 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1125#L864 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 1035#L864-1 [2021-08-27 16:26:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:26:35,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788424410] [2021-08-27 16:26:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,948 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1333768502, now seen corresponding path program 1 times [2021-08-27 16:26:35,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169874036] [2021-08-27 16:26:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:36,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:36,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169874036] [2021-08-27 16:26:36,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169874036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:36,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:36,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:26:36,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696660858] [2021-08-27 16:26:36,011 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:36,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:26:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:26:36,012 INFO L87 Difference]: Start difference. First operand 232 states and 317 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:36,123 INFO L93 Difference]: Finished difference Result 636 states and 853 transitions. [2021-08-27 16:26:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:36,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 636 states and 853 transitions. [2021-08-27 16:26:36,126 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 421 [2021-08-27 16:26:36,128 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 636 states to 636 states and 853 transitions. [2021-08-27 16:26:36,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 636 [2021-08-27 16:26:36,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 636 [2021-08-27 16:26:36,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 636 states and 853 transitions. [2021-08-27 16:26:36,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:36,130 INFO L681 BuchiCegarLoop]: Abstraction has 636 states and 853 transitions. [2021-08-27 16:26:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states and 853 transitions. [2021-08-27 16:26:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 457. [2021-08-27 16:26:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 457 states have (on average 1.3326039387308535) internal successors, (609), 456 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 609 transitions. [2021-08-27 16:26:36,139 INFO L704 BuchiCegarLoop]: Abstraction has 457 states and 609 transitions. [2021-08-27 16:26:36,139 INFO L587 BuchiCegarLoop]: Abstraction has 457 states and 609 transitions. [2021-08-27 16:26:36,139 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:26:36,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 457 states and 609 transitions. [2021-08-27 16:26:36,141 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 328 [2021-08-27 16:26:36,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:36,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:36,142 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:36,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:36,142 INFO L791 eck$LassoCheckResult]: Stem: 1958#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1887#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~11, main_~tmp~10;havoc main_~retValue_acc~11;havoc main_~tmp~10; 1888#L1008 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1811#L1016 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 1812#L972 assume 0 != main_~tmp~10; 1819#L945 ~switchedOnBeforeTS~0 := 0; 1919#L843 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1861#L864-1 [2021-08-27 16:26:36,142 INFO L793 eck$LassoCheckResult]: Loop: 1861#L864-1 assume !false; 1828#L167 assume test_~splverifierCounter~0 < 4; 1829#L168 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 2240#L176 assume !(0 != test_~tmp~0); 2239#L176-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 2237#L186 assume !(0 != test_~tmp___0~0); 2234#L186-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 1911#L196 assume 0 != test_~tmp___2~0; 1913#L202-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 2238#L368 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 2235#L853 assume !(0 != ~pumpRunning~0); 1857#L239 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1858#L297 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1835#L271-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1836#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1874#L138-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1875#L417-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1916#L417-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1908#L423-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1909#L275-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1873#L246 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1914#L125 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1956#L864 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~5;havoc isPumpRunning_~retValue_acc~5;isPumpRunning_~retValue_acc~5 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~5; 1957#L368-1 __utac_acc__Specification5_spec__3_#t~ret80 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1859#L868 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1861#L864-1 [2021-08-27 16:26:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:26:36,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720988970] [2021-08-27 16:26:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,178 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,200 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1851287387, now seen corresponding path program 1 times [2021-08-27 16:26:36,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829582424] [2021-08-27 16:26:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,205 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,210 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1914713569, now seen corresponding path program 1 times [2021-08-27 16:26:36,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657339752] [2021-08-27 16:26:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,229 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:17,726 WARN L207 SmtUtils]: Spent 41.23 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:28:01,608 WARN L207 SmtUtils]: Spent 21.00 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:28:01,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:28:01 BoogieIcfgContainer [2021-08-27 16:28:01,702 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:28:01,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:28:01,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:28:01,704 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:28:01,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35" (3/4) ... [2021-08-27 16:28:01,713 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:28:01,766 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:28:01,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:28:01,772 INFO L168 Benchmark]: Toolchain (without parser) took 87913.40 ms. Allocated memory was 52.4 MB in the beginning and 182.5 MB in the end (delta: 130.0 MB). Free memory was 29.5 MB in the beginning and 91.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,772 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:28:01,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.94 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.3 MB in the beginning and 48.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.79 ms. Allocated memory is still 71.3 MB. Free memory was 48.0 MB in the beginning and 44.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,775 INFO L168 Benchmark]: Boogie Preprocessor took 70.82 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 41.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,776 INFO L168 Benchmark]: RCFGBuilder took 623.19 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 39.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,784 INFO L168 Benchmark]: BuchiAutomizer took 86677.33 ms. Allocated memory was 71.3 MB in the beginning and 182.5 MB in the end (delta: 111.1 MB). Free memory was 39.9 MB in the beginning and 94.1 MB in the end (delta: -54.2 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,784 INFO L168 Benchmark]: Witness Printer took 67.65 ms. Allocated memory is still 182.5 MB. Free memory was 94.1 MB in the beginning and 91.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:01,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.94 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.3 MB in the beginning and 48.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.79 ms. Allocated memory is still 71.3 MB. Free memory was 48.0 MB in the beginning and 44.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.82 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 41.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 623.19 ms. Allocated memory is still 71.3 MB. Free memory was 41.0 MB in the beginning and 39.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86677.33 ms. Allocated memory was 71.3 MB in the beginning and 182.5 MB in the end (delta: 111.1 MB). Free memory was 39.9 MB in the beginning and 94.1 MB in the end (delta: -54.2 MB). Peak memory consumption was 109.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.65 ms. Allocated memory is still 182.5 MB. Free memory was 94.1 MB in the beginning and 91.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 457 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 86.1s. 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 29.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 310 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 457 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 665 SDtfs, 1768 SDslu, 1489 SDs, 0 SdLazy, 173 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 166]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=19670} State at position 1 is {NULL=0, NULL=0, NULL=19673, NULL=0, NULL=19670, NULL=73610, NULL=73614, retValue_acc=1, methaneLevelCritical=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=73624, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@609026b5=0, cleanupTimeShifts=4, tmp=0, NULL=19676, tmp=1, waterLevel=1, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311ed1a6=0, tmp___0=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=73608, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b7b1f8f=0, NULL=0, \result=1, NULL=73617, NULL=0, NULL=0, tmp=1, NULL=73607, NULL=0, NULL=0, NULL=0, NULL=73613, NULL=19672, NULL=73606, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@775d9b7c=50, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a72fc20=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e3c422d=0, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12bdab4c=0, NULL=0, NULL=0, NULL=73618, NULL=73615, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b95c20f=0, NULL=0, NULL=73616, NULL=73620, NULL=73609, NULL=19675, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=73621, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27127fa=0, tmp=0, NULL=49828, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=0, NULL=19674, \result=0, NULL=0, retValue_acc=0, NULL=73623, \result=0, tmp___0=0, NULL=73611, NULL=0, NULL=19671, tmp___2=50, splverifierCounter=0, NULL=0, NULL=73622, NULL=73612, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@488b2ed1=0, NULL=49827, NULL=73619, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e089e8e=0, NULL=73605, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L227] int pumpRunning = 0; [L228] int systemActive = 1; [L631] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L837] int switchedOnBeforeTS ; [L886] int cleanupTimeShifts = 4; [L963] int retValue_acc ; [L964] int tmp ; [L1012] int retValue_acc ; [L1015] retValue_acc = 1 [L1016] return (retValue_acc); [L970] tmp = valid_product() [L972] COND TRUE \read(tmp) [L842] switchedOnBeforeTS = 0 [L157] int splverifierCounter ; [L158] int tmp ; [L159] int tmp___0 ; [L160] int tmp___1 ; [L161] int tmp___2 ; [L164] splverifierCounter = 0 Loop: [L166] COND TRUE 1 [L168] COND TRUE splverifierCounter < 4 [L174] tmp = __VERIFIER_nondet_int() [L176] COND FALSE !(\read(tmp)) [L184] tmp___0 = __VERIFIER_nondet_int() [L186] COND FALSE !(\read(tmp___0)) [L194] tmp___2 = __VERIFIER_nondet_int() [L196] COND TRUE \read(tmp___2) [L364] int retValue_acc ; [L367] retValue_acc = pumpRunning [L368] return (retValue_acc); [L851] switchedOnBeforeTS = isPumpRunning() [L239] COND FALSE !(\read(pumpRunning)) [L246] COND TRUE \read(systemActive) [L294] int tmp ; [L297] COND FALSE !(\read(pumpRunning)) [L268] int tmp ; [L271] COND TRUE ! pumpRunning [L409] int retValue_acc ; [L410] int tmp ; [L411] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L415] tmp = isHighWaterSensorDry() [L417] COND TRUE \read(tmp) [L418] tmp___0 = 0 [L422] retValue_acc = tmp___0 [L423] return (retValue_acc); [L273] tmp = isHighWaterLevel() [L275] COND FALSE !(\read(tmp)) [L857] int tmp ; [L858] int tmp___0 ; [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L862] tmp = getWaterLevel() [L864] COND TRUE tmp != 2 [L364] int retValue_acc ; [L367] retValue_acc = pumpRunning [L368] return (retValue_acc); [L866] tmp___0 = isPumpRunning() [L868] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:28:01,859 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...