./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product40.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_spec4_product40.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10c62355b958c28dceaa55313714ee80b90c1fad ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:17:41,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:17:41,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:17:41,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:17:41,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:17:41,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:17:41,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:17:41,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:17:41,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:17:41,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:17:41,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:17:41,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:17:41,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:17:41,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:17:41,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:17:41,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:17:41,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:17:41,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:17:41,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:17:41,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:17:41,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:17:41,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:17:41,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:17:41,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:17:41,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:17:41,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:17:41,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:17:41,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:17:41,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:17:41,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:17:41,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:17:41,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:17:41,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:17:41,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:17:41,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:17:41,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:17:41,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:17:41,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:17:41,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:17:41,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:17:41,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:17:41,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:17:41,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:17:41,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:17:41,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:17:41,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:17:41,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:17:41,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:17:41,850 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:17:41,850 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:17:41,850 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:17:41,850 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:17:41,851 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:17:41,851 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:17:41,852 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:17:41,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:17:41,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:17:41,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:17:41,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:17:41,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:17:41,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:17:41,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:17:41,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:17:41,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:17:41,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:17:41,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:17:41,861 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:17:41,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:17:41,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:17:41,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:17:41,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:17:41,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:17:41,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:17:41,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:17:41,863 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:17:41,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c62355b958c28dceaa55313714ee80b90c1fad [2021-08-27 16:17:42,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:17:42,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:17:42,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:17:42,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:17:42,176 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:17:42,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-08-27 16:17:42,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e6ff480/231fe77064b043838e934b9fab9be390/FLAGfbb20aec2 [2021-08-27 16:17:42,650 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:17:42,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-08-27 16:17:42,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e6ff480/231fe77064b043838e934b9fab9be390/FLAGfbb20aec2 [2021-08-27 16:17:43,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e6ff480/231fe77064b043838e934b9fab9be390 [2021-08-27 16:17:43,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:17:43,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:17:43,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:43,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:17:43,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:17:43,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a560931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43, skipping insertion in model container [2021-08-27 16:17:43,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:17:43,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:17:43,285 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_spec4_product40.cil.c[5076,5089] [2021-08-27 16:17:43,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:43,389 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:17:43,407 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_spec4_product40.cil.c[5076,5089] [2021-08-27 16:17:43,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:43,502 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:17:43,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43 WrapperNode [2021-08-27 16:17:43,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:43,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:43,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:17:43,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:17:43,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:43,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:17:43,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:17:43,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:17:43,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:17:43,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:17:43,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:17:43,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:17:43,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (1/1) ... [2021-08-27 16:17:43,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:17:43,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:17:43,683 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 16:17:43,687 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 16:17:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:17:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:17:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:17:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:17:44,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:17:44,487 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-08-27 16:17:44,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:44 BoogieIcfgContainer [2021-08-27 16:17:44,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:17:44,490 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:17:44,490 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:17:44,492 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:17:44,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:44,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:17:43" (1/3) ... [2021-08-27 16:17:44,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9f0b45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:44, skipping insertion in model container [2021-08-27 16:17:44,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:44,494 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:43" (2/3) ... [2021-08-27 16:17:44,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9f0b45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:44, skipping insertion in model container [2021-08-27 16:17:44,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:44,495 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:44" (3/3) ... [2021-08-27 16:17:44,496 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-08-27 16:17:44,537 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:17:44,537 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:17:44,538 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:17:44,538 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:17:44,538 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:17:44,538 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:17:44,538 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:17:44,538 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:17:44,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:44,570 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:17:44,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:44,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:44,576 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,576 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,577 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:17:44,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:44,582 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:17:44,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:44,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:44,584 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,584 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:44,594 INFO L791 eck$LassoCheckResult]: Stem: 100#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 42#L-1true havoc main_#res;havoc main_#t~ret31, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 9#L944true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 110#L952true main_#t~ret31 := valid_product_#res;main_~tmp~4 := main_#t~ret31;havoc main_#t~ret31; 31#L421true assume 0 != main_~tmp~4; 76#L395true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 106#L904-1true [2021-08-27 16:17:44,595 INFO L793 eck$LassoCheckResult]: Loop: 106#L904-1true assume !false; 89#L59true assume test_~splverifierCounter~0 < 4; 108#L60true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 103#L68true assume !(0 != test_~tmp~0); 84#L68-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 18#L78true assume !(0 != test_~tmp___0~0); 82#L78-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 85#L88true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 63#L96-1true assume !(0 != ~pumpRunning~0); 92#L133true assume !(0 != ~systemActive~0); 53#L140true havoc __utac_acc__Specification4_spec__1_#t~ret77, __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 67#L511true __utac_acc__Specification4_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret77;havoc __utac_acc__Specification4_spec__1_#t~ret77; 19#L904true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 106#L904-1true [2021-08-27 16:17:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,599 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:17:44,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162669095] [2021-08-27 16:17:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,767 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:44,883 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:44,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:44,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1670447604, now seen corresponding path program 1 times [2021-08-27 16:17:44,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:44,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378300286] [2021-08-27 16:17:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:44,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:44,950 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 16:17:44,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:44,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378300286] [2021-08-27 16:17:44,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378300286] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:44,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:44,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:17:44,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396905472] [2021-08-27 16:17:44,957 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:17:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:17:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:17:44,974 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 109 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:45,022 INFO L93 Difference]: Finished difference Result 214 states and 312 transitions. [2021-08-27 16:17:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:17:45,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 312 transitions. [2021-08-27 16:17:45,029 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 138 [2021-08-27 16:17:45,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 200 states and 297 transitions. [2021-08-27 16:17:45,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 200 [2021-08-27 16:17:45,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 200 [2021-08-27 16:17:45,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 297 transitions. [2021-08-27 16:17:45,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:45,040 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 297 transitions. [2021-08-27 16:17:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 297 transitions. [2021-08-27 16:17:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-08-27 16:17:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 1.4848484848484849) internal successors, (294), 197 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 294 transitions. [2021-08-27 16:17:45,074 INFO L704 BuchiCegarLoop]: Abstraction has 198 states and 294 transitions. [2021-08-27 16:17:45,074 INFO L587 BuchiCegarLoop]: Abstraction has 198 states and 294 transitions. [2021-08-27 16:17:45,074 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:17:45,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 294 transitions. [2021-08-27 16:17:45,077 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2021-08-27 16:17:45,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:45,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:45,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:45,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:45,078 INFO L791 eck$LassoCheckResult]: Stem: 457#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 398#L-1 havoc main_#res;havoc main_#t~ret31, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 342#L944 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 343#L952 main_#t~ret31 := valid_product_#res;main_~tmp~4 := main_#t~ret31;havoc main_#t~ret31; 383#L421 assume 0 != main_~tmp~4; 384#L395 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 361#L904-1 [2021-08-27 16:17:45,079 INFO L793 eck$LassoCheckResult]: Loop: 361#L904-1 assume !false; 445#L59 assume test_~splverifierCounter~0 < 4; 446#L60 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 460#L68 assume !(0 != test_~tmp~0); 465#L68-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 464#L78 assume !(0 != test_~tmp___0~0); 438#L78-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 439#L88 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 441#L96-1 assume !(0 != ~pumpRunning~0); 450#L133 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 430#L191 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 351#L165-1 assume !(0 == ~pumpRunning~0); 349#L140 havoc __utac_acc__Specification4_spec__1_#t~ret77, __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 424#L511 __utac_acc__Specification4_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret77;havoc __utac_acc__Specification4_spec__1_#t~ret77; 360#L904 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 361#L904-1 [2021-08-27 16:17:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:17:45,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596706505] [2021-08-27 16:17:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,148 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,245 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1422660381, now seen corresponding path program 1 times [2021-08-27 16:17:45,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141082721] [2021-08-27 16:17:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:45,278 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 16:17:45,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:45,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141082721] [2021-08-27 16:17:45,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141082721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:45,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:45,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:17:45,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417517141] [2021-08-27 16:17:45,284 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:17:45,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:17:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:17:45,288 INFO L87 Difference]: Start difference. First operand 198 states and 294 transitions. cyclomatic complexity: 99 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:45,374 INFO L93 Difference]: Finished difference Result 281 states and 394 transitions. [2021-08-27 16:17:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:17:45,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 281 states and 394 transitions. [2021-08-27 16:17:45,378 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 199 [2021-08-27 16:17:45,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 281 states to 281 states and 394 transitions. [2021-08-27 16:17:45,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-08-27 16:17:45,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2021-08-27 16:17:45,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 394 transitions. [2021-08-27 16:17:45,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:45,386 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-08-27 16:17:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 394 transitions. [2021-08-27 16:17:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-08-27 16:17:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 281 states have (on average 1.402135231316726) internal successors, (394), 280 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:17:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 394 transitions. [2021-08-27 16:17:45,406 INFO L704 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-08-27 16:17:45,406 INFO L587 BuchiCegarLoop]: Abstraction has 281 states and 394 transitions. [2021-08-27 16:17:45,407 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:17:45,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 281 states and 394 transitions. [2021-08-27 16:17:45,410 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 199 [2021-08-27 16:17:45,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:45,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:45,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:45,412 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:45,412 INFO L791 eck$LassoCheckResult]: Stem: 943#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 885#L-1 havoc main_#res;havoc main_#t~ret31, main_~retValue_acc~3, main_~tmp~4;havoc main_~retValue_acc~3;havoc main_~tmp~4; 827#L944 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 828#L952 main_#t~ret31 := valid_product_#res;main_~tmp~4 := main_#t~ret31;havoc main_#t~ret31; 868#L421 assume 0 != main_~tmp~4; 869#L395 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, 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; 918#L904-1 [2021-08-27 16:17:45,413 INFO L793 eck$LassoCheckResult]: Loop: 918#L904-1 assume !false; 932#L59 assume test_~splverifierCounter~0 < 4; 933#L60 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 944#L68 assume !(0 != test_~tmp~0); 821#L68-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1018#L78 assume !(0 != test_~tmp___0~0); 924#L78-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 925#L88 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 909#L96-1 assume !(0 != ~pumpRunning~0); 910#L133 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 916#L191 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 836#L165-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 837#L519-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 886#L524-1 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 887#L293-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 988#L293-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 985#L299-1 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 983#L169-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 935#L140 havoc __utac_acc__Specification4_spec__1_#t~ret77, __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1007#L511 __utac_acc__Specification4_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret77;havoc __utac_acc__Specification4_spec__1_#t~ret77; 1005#L904 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 918#L904-1 [2021-08-27 16:17:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:17:45,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725680898] [2021-08-27 16:17:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,455 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,488 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,489 INFO L82 PathProgramCache]: Analyzing trace with hash 287627951, now seen corresponding path program 1 times [2021-08-27 16:17:45,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600255193] [2021-08-27 16:17:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,494 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,500 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 743699145, now seen corresponding path program 1 times [2021-08-27 16:17:45,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:45,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630785714] [2021-08-27 16:17:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:45,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,526 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:45,559 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:25,521 WARN L207 SmtUtils]: Spent 39.70 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:19:07,306 WARN L207 SmtUtils]: Spent 20.40 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:19:07,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:19:07 BoogieIcfgContainer [2021-08-27 16:19:07,419 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:19:07,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:19:07,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:19:07,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:19:07,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:44" (3/4) ... [2021-08-27 16:19:07,423 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:19:07,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:19:07,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:19:07,468 INFO L168 Benchmark]: Toolchain (without parser) took 84432.81 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 55.0 MB in the beginning and 53.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,468 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 71.3 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:19:07,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.29 ms. Allocated memory is still 71.3 MB. Free memory was 54.8 MB in the beginning and 48.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.08 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 44.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,470 INFO L168 Benchmark]: Boogie Preprocessor took 64.15 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 42.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,470 INFO L168 Benchmark]: RCFGBuilder took 828.64 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 42.3 MB in the beginning and 45.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,471 INFO L168 Benchmark]: BuchiAutomizer took 82929.67 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 57.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,471 INFO L168 Benchmark]: Witness Printer took 46.90 ms. Allocated memory is still 104.9 MB. Free memory was 57.0 MB in the beginning and 53.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:07,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 71.3 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.29 ms. Allocated memory is still 71.3 MB. Free memory was 54.8 MB in the beginning and 48.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.08 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 44.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.15 ms. Allocated memory is still 71.3 MB. Free memory was 44.7 MB in the beginning and 42.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 828.64 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 42.3 MB in the beginning and 45.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 82929.67 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 57.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. * Witness Printer took 46.90 ms. Allocated memory is still 104.9 MB. Free memory was 57.0 MB in the beginning and 53.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 281 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 82.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 82.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 42.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 281 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 306 SDtfs, 262 SDslu, 206 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 58]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30691} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c48d400=71, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a479a63=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@257c3d32=0, NULL=30691, NULL=40725, NULL=0, NULL=0, NULL=40730, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f85f10c=0, NULL=30694, retValue_acc=0, tmp___1=0, NULL=40711, NULL=40722, NULL=0, NULL=40723, cleanupTimeShifts=4, tmp=0, NULL=40720, NULL=0, NULL=0, waterLevel=1, tmp___0=0, NULL=40729, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=40727, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=30692, NULL=0, NULL=0, tmp=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ea7b0db=0, tmp=1, retValue_acc=1, NULL=30693, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cd6d90a=0, head=0, NULL=30695, NULL=0, NULL=0, NULL=40726, NULL=40733, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f31e4bb=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dca67e=0, NULL=0, NULL=40718, NULL=40713, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ba45a46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36f87f5e=0, NULL=40732, tmp___0=0, NULL=0, NULL=0, NULL=40712, NULL=0, tmp=0, NULL=40719, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=40728, \result=1, \result=0, NULL=40715, \result=0, NULL=40716, NULL=0, NULL=0, NULL=40724, NULL=0, NULL=40710, tmp___2=71, splverifierCounter=0, NULL=0, NULL=40721, NULL=40731, NULL=40717, NULL=40714} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L412] int retValue_acc ; [L413] int tmp ; [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 Loop: [L58] COND TRUE 1 [L60] COND TRUE splverifierCounter < 4 [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 [L133] COND FALSE !(\read(pumpRunning)) [L140] COND TRUE \read(systemActive) [L188] int tmp ; [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; [L519] COND TRUE waterLevel < 2 [L520] retValue_acc = 1 [L521] return (retValue_acc); [L291] tmp = isHighWaterSensorDry() [L293] COND TRUE \read(tmp) [L294] tmp___0 = 0 [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); [L167] tmp = isHighWaterLevel() [L169] COND FALSE !(\read(tmp)) [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:19:07,531 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...