./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product61.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_spec3_product61.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 9558026aa74bc39759eb2664747acd02f73fafe3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:13:07,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:13:07,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:13:07,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:13:07,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:13:07,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:13:07,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:13:07,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:13:07,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:13:07,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:13:07,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:13:07,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:13:07,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:13:07,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:13:07,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:13:07,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:13:07,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:13:07,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:13:07,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:13:07,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:13:07,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:13:07,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:13:07,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:13:07,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:13:07,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:13:07,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:13:07,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:13:07,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:13:07,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:13:07,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:13:07,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:13:07,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:13:07,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:13:07,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:13:07,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:13:07,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:13:07,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:13:07,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:13:07,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:13:07,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:13:07,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:13:07,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:13:07,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:13:07,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:13:07,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:13:07,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:13:07,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:13:07,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:13:07,627 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:13:07,627 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:13:07,628 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:13:07,628 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:13:07,628 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:13:07,628 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:13:07,628 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:13:07,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:13:07,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:13:07,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:13:07,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:13:07,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:13:07,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:13:07,632 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:13:07,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558026aa74bc39759eb2664747acd02f73fafe3 [2021-08-27 16:13:07,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:13:07,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:13:07,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:13:07,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:13:07,911 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:13:07,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-08-27 16:13:07,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c420e12/b99c7376d3094c99975d579addc3db19/FLAG5c1d5b4bd [2021-08-27 16:13:08,296 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:13:08,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-08-27 16:13:08,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c420e12/b99c7376d3094c99975d579addc3db19/FLAG5c1d5b4bd [2021-08-27 16:13:08,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c420e12/b99c7376d3094c99975d579addc3db19 [2021-08-27 16:13:08,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:13:08,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:13:08,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:13:08,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:13:08,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:13:08,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:08,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cb14b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08, skipping insertion in model container [2021-08-27 16:13:08,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:08,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:13:08,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:13:08,832 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_spec3_product61.cil.c[7057,7070] [2021-08-27 16:13:08,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:13:08,907 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:13:08,927 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_spec3_product61.cil.c[7057,7070] [2021-08-27 16:13:08,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:13:08,959 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:13:08,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08 WrapperNode [2021-08-27 16:13:08,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:13:08,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:13:08,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:13:08,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:13:08,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:08,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:13:09,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:13:09,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:13:09,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:13:09,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:13:09,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:13:09,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:13:09,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:13:09,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (1/1) ... [2021-08-27 16:13:09,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:13:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:13:09,125 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 16:13:09,130 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 16:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:13:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:13:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:13:09,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:13:09,920 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-08-27 16:13:09,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:09 BoogieIcfgContainer [2021-08-27 16:13:09,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:13:09,922 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:13:09,922 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:13:09,925 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:13:09,926 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:09,926 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:13:08" (1/3) ... [2021-08-27 16:13:09,927 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fe9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:13:09, skipping insertion in model container [2021-08-27 16:13:09,927 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:09,927 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:13:08" (2/3) ... [2021-08-27 16:13:09,927 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fe9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:13:09, skipping insertion in model container [2021-08-27 16:13:09,927 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:13:09,927 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:09" (3/3) ... [2021-08-27 16:13:09,928 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2021-08-27 16:13:09,959 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:13:09,960 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:13:09,960 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:13:09,960 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:13:09,960 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:13:09,960 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:13:09,960 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:13:09,960 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:13:09,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 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 16:13:10,004 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:13:10,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:10,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:10,010 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,010 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,010 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:13:10,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 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 16:13:10,021 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:13:10,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:10,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:10,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,025 INFO L791 eck$LassoCheckResult]: Stem: 217#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.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(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 149#L-1true havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 36#L629true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 83#L637true main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 151#L559true assume 0 != main_~tmp~7; 95#L533true 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; 105#L588-1true [2021-08-27 16:13:10,025 INFO L793 eck$LassoCheckResult]: Loop: 105#L588-1true assume !false; 113#L57true assume test_~splverifierCounter~0 < 4; 148#L58true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 23#L66true assume !(0 != test_~tmp~0); 47#L66-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 55#L76true assume !(0 != test_~tmp___0~0); 215#L76-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 116#L86true assume 0 != test_~tmp___2~0; 174#L92-2true assume !(0 != ~pumpRunning~0); 162#L128true assume !(0 != ~systemActive~0); 87#L135true havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 132#L405-5true __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 222#L582true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 105#L588-1true [2021-08-27 16:13:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:13:10,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502758516] [2021-08-27 16:13:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,154 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1675126795, now seen corresponding path program 1 times [2021-08-27 16:13:10,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169172479] [2021-08-27 16:13:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,276 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash 39152143, now seen corresponding path program 1 times [2021-08-27 16:13:10,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569331132] [2021-08-27 16:13:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:10,368 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 16:13:10,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:10,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569331132] [2021-08-27 16:13:10,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569331132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:10,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:10,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:13:10,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022248759] [2021-08-27 16:13:10,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:13:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:13:10,471 INFO L87 Difference]: Start difference. First operand has 228 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 16:13:10,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:10,567 INFO L93 Difference]: Finished difference Result 228 states and 331 transitions. [2021-08-27 16:13:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:13:10,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 331 transitions. [2021-08-27 16:13:10,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:13:10,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 221 states and 324 transitions. [2021-08-27 16:13:10,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2021-08-27 16:13:10,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2021-08-27 16:13:10,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 324 transitions. [2021-08-27 16:13:10,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:10,583 INFO L681 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-08-27 16:13:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 324 transitions. [2021-08-27 16:13:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-08-27 16:13:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 221 states have (on average 1.4660633484162895) internal successors, (324), 220 states have internal predecessors, (324), 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 16:13:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2021-08-27 16:13:10,615 INFO L704 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-08-27 16:13:10,615 INFO L587 BuchiCegarLoop]: Abstraction has 221 states and 324 transitions. [2021-08-27 16:13:10,615 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:13:10,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 324 transitions. [2021-08-27 16:13:10,618 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:13:10,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:10,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:10,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,620 INFO L791 eck$LassoCheckResult]: Stem: 694#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.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(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 665#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 531#L629 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 532#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 601#L559 assume 0 != main_~tmp~7; 618#L533 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; 489#L588-1 [2021-08-27 16:13:10,620 INFO L793 eck$LassoCheckResult]: Loop: 489#L588-1 assume !false; 627#L57 assume test_~splverifierCounter~0 < 4; 633#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 510#L66 assume !(0 != test_~tmp~0); 512#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 548#L76 assume !(0 != test_~tmp___0~0); 561#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 636#L86 assume 0 != test_~tmp___2~0; 610#L92-2 assume !(0 != ~pumpRunning~0); 673#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 674#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 655#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 631#L160-3 assume !(0 == ~pumpRunning~0); 572#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 606#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 651#L582 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 489#L588-1 [2021-08-27 16:13:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:13:10,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257364682] [2021-08-27 16:13:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,677 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,736 INFO L82 PathProgramCache]: Analyzing trace with hash 391395508, now seen corresponding path program 1 times [2021-08-27 16:13:10,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101127696] [2021-08-27 16:13:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:10,752 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 16:13:10,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:10,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101127696] [2021-08-27 16:13:10,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101127696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:10,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:10,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:13:10,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297053841] [2021-08-27 16:13:10,757 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:13:10,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:13:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:13:10,758 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16:13:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:10,848 INFO L93 Difference]: Finished difference Result 223 states and 309 transitions. [2021-08-27 16:13:10,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:13:10,848 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 309 transitions. [2021-08-27 16:13:10,852 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-08-27 16:13:10,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 223 states and 309 transitions. [2021-08-27 16:13:10,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2021-08-27 16:13:10,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2021-08-27 16:13:10,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 309 transitions. [2021-08-27 16:13:10,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:10,864 INFO L681 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-08-27 16:13:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 309 transitions. [2021-08-27 16:13:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-08-27 16:13:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 223 states have (on average 1.3856502242152466) internal successors, (309), 222 states have internal predecessors, (309), 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 16:13:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2021-08-27 16:13:10,877 INFO L704 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-08-27 16:13:10,877 INFO L587 BuchiCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-08-27 16:13:10,877 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:13:10,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 309 transitions. [2021-08-27 16:13:10,878 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 152 [2021-08-27 16:13:10,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:10,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:10,879 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:10,879 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] [2021-08-27 16:13:10,879 INFO L791 eck$LassoCheckResult]: Stem: 1102#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.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(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1004#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 1005#L629 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1017#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 1012#L559 assume 0 != main_~tmp~7; 1013#L533 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; 955#L588-1 [2021-08-27 16:13:10,879 INFO L793 eck$LassoCheckResult]: Loop: 955#L588-1 assume !false; 1105#L57 assume test_~splverifierCounter~0 < 4; 1002#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 991#L66 assume !(0 != test_~tmp~0); 993#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1046#L76 assume !(0 != test_~tmp___0~0); 1020#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 926#L86 assume 0 != test_~tmp___2~0; 927#L92-2 assume !(0 != ~pumpRunning~0); 1036#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1037#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 977#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 978#L160-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1030#L445-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1031#L450-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1040#L331-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1041#L331-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1071#L337-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1072#L164-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 988#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 964#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 965#L582 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 955#L588-1 [2021-08-27 16:13:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,880 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:13:10,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015605623] [2021-08-27 16:13:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,923 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,963 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,963 INFO L82 PathProgramCache]: Analyzing trace with hash 697809952, now seen corresponding path program 1 times [2021-08-27 16:13:10,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69538524] [2021-08-27 16:13:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,967 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:10,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1951115078, now seen corresponding path program 1 times [2021-08-27 16:13:10,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:10,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782637635] [2021-08-27 16:13:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:10,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:13:11,040 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 16:13:11,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:13:11,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782637635] [2021-08-27 16:13:11,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782637635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:13:11,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:13:11,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:13:11,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856680134] [2021-08-27 16:13:11,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:13:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:13:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:13:11,205 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. cyclomatic complexity: 88 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 16:13:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:13:11,406 INFO L93 Difference]: Finished difference Result 747 states and 1037 transitions. [2021-08-27 16:13:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:13:11,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 747 states and 1037 transitions. [2021-08-27 16:13:11,412 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 532 [2021-08-27 16:13:11,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 747 states to 747 states and 1037 transitions. [2021-08-27 16:13:11,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 747 [2021-08-27 16:13:11,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 747 [2021-08-27 16:13:11,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 747 states and 1037 transitions. [2021-08-27 16:13:11,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:13:11,424 INFO L681 BuchiCegarLoop]: Abstraction has 747 states and 1037 transitions. [2021-08-27 16:13:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states and 1037 transitions. [2021-08-27 16:13:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 440. [2021-08-27 16:13:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 440 states have (on average 1.3727272727272728) internal successors, (604), 439 states have internal predecessors, (604), 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 16:13:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 604 transitions. [2021-08-27 16:13:11,450 INFO L704 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2021-08-27 16:13:11,450 INFO L587 BuchiCegarLoop]: Abstraction has 440 states and 604 transitions. [2021-08-27 16:13:11,450 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:13:11,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 440 states and 604 transitions. [2021-08-27 16:13:11,452 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 304 [2021-08-27 16:13:11,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:13:11,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:13:11,452 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:13:11,452 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] [2021-08-27 16:13:11,453 INFO L791 eck$LassoCheckResult]: Stem: 2129#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.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(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1995#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~7;havoc main_~retValue_acc~8;havoc main_~tmp~7; 1996#L629 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 2010#L637 main_#t~ret44 := valid_product_#res;main_~tmp~7 := main_#t~ret44;havoc main_#t~ret44; 2005#L559 assume 0 != main_~tmp~7; 2006#L533 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; 1945#L588-1 [2021-08-27 16:13:11,453 INFO L793 eck$LassoCheckResult]: Loop: 1945#L588-1 assume !false; 2337#L57 assume test_~splverifierCounter~0 < 4; 1993#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1982#L66 assume !(0 != test_~tmp~0); 1984#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 2042#L76 assume !(0 != test_~tmp___0~0); 2068#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1914#L86 assume 0 != test_~tmp___2~0; 1915#L92-2 assume !(0 != ~pumpRunning~0); 2032#L128 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2033#L212 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2073#L186-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2338#L160-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2024#L445-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2025#L450-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 2036#L331-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2037#L331-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2116#L337-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 2279#L164-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1979#L135 havoc __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 2118#L405-5 __utac_acc__Specification3_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 2132#L582 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);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; 2133#L437 __utac_acc__Specification3_spec__1_#t~ret46 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 2092#L588 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1945#L588-1 [2021-08-27 16:13:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:13:11,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:11,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237381732] [2021-08-27 16:13:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:11,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,472 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,503 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:11,503 INFO L82 PathProgramCache]: Analyzing trace with hash 580478418, now seen corresponding path program 1 times [2021-08-27 16:13:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:11,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77564435] [2021-08-27 16:13:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:11,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,509 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,520 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:13:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1879105672, now seen corresponding path program 1 times [2021-08-27 16:13:11,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:13:11,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042197808] [2021-08-27 16:13:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:13:11,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:13:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,547 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:13:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:13:11,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:52,190 WARN L207 SmtUtils]: Spent 40.37 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:14:34,259 WARN L207 SmtUtils]: Spent 20.44 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:14:34,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:14:34 BoogieIcfgContainer [2021-08-27 16:14:34,401 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:14:34,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:14:34,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:14:34,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:14:34,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:13:09" (3/4) ... [2021-08-27 16:14:34,404 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:14:34,429 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:14:34,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:14:34,430 INFO L168 Benchmark]: Toolchain (without parser) took 85738.32 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 42.4 MB in the beginning and 33.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,430 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:14:34,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.17 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 39.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.82 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 34.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,431 INFO L168 Benchmark]: Boogie Preprocessor took 43.71 ms. Allocated memory is still 62.9 MB. Free memory was 34.1 MB in the beginning and 30.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,431 INFO L168 Benchmark]: RCFGBuilder took 830.97 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 30.0 MB in the beginning and 59.2 MB in the end (delta: -29.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,432 INFO L168 Benchmark]: BuchiAutomizer took 84479.34 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 58.7 MB in the beginning and 35.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:14:34,432 INFO L168 Benchmark]: Witness Printer took 27.62 ms. Allocated memory is still 125.8 MB. Free memory was 35.1 MB in the beginning and 33.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:14:34,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.17 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 39.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.82 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 34.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.71 ms. Allocated memory is still 62.9 MB. Free memory was 34.1 MB in the beginning and 30.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 830.97 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 30.0 MB in the beginning and 59.2 MB in the end (delta: -29.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84479.34 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 58.7 MB in the beginning and 35.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 16.1 GB. * Witness Printer took 27.62 ms. Allocated memory is still 125.8 MB. Free memory was 35.1 MB in the beginning and 33.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 440 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 83.8s. Construction of modules took 0.2s. 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 63.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 307 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 440 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 914 SDtfs, 2491 SDslu, 1205 SDs, 0 SdLazy, 209 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 230.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=29061} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24c6c1c5=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cdf7bb0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17070d71=0, NULL=29061, NULL=29084, NULL=0, NULL=29088, NULL=0, methaneLevelCritical=0, NULL=29065, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d603276=0, retValue_acc=1, NULL=0, retValue_acc=0, NULL=29085, NULL=0, tmp___1=0, NULL=29075, NULL=29073, NULL=0, NULL=29081, cleanupTimeShifts=4, tmp=0, tmp=0, NULL=29074, NULL=0, NULL=0, waterLevel=1, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c8530db=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70449d99=0, NULL=29067, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41b83bf0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@742a3136=0, tmp=0, head=0, NULL=29071, NULL=0, NULL=0, NULL=0, NULL=29082, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48c7c048=0, retValue_acc=0, NULL=0, NULL=29087, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23b4eb72=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a1999ce=0, NULL=29080, NULL=0, tmp___0=0, NULL=0, NULL=29063, NULL=29066, NULL=0, tmp=0, NULL=29068, NULL=29072, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=29083, \result=1, \result=0, retValue_acc=0, NULL=29078, \result=0, NULL=29069, NULL=0, NULL=29079, NULL=0, NULL=29086, NULL=29064, NULL=29077, tmp___2=56, splverifierCounter=0, NULL=0, \result=0, NULL=29076, NULL=29062, NULL=29089, tmp___1=0, NULL=29070, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12debb3b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L362] int waterLevel = 1; [L363] int methaneLevelCritical = 0; [L474] int cleanupTimeShifts = 4; [L811] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L550] int retValue_acc ; [L551] int tmp ; [L633] int retValue_acc ; [L636] retValue_acc = 1 [L637] return (retValue_acc); [L557] tmp = valid_product() [L559] COND TRUE \read(tmp) [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 Loop: [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L209] int tmp ; [L212] COND FALSE !(\read(pumpRunning)) [L183] int tmp ; [L186] COND FALSE !(\read(pumpRunning)) [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L323] int retValue_acc ; [L324] int tmp ; [L325] int tmp___0 ; [L442] int retValue_acc ; [L445] COND TRUE waterLevel < 2 [L446] retValue_acc = 1 [L447] return (retValue_acc); [L329] tmp = isHighWaterSensorDry() [L331] COND TRUE \read(tmp) [L332] tmp___0 = 0 [L336] retValue_acc = tmp___0 [L337] return (retValue_acc); [L162] tmp = isHighWaterLevel() [L164] COND FALSE !(\read(tmp)) [L574] int tmp ; [L575] int tmp___0 ; [L576] int tmp___1 ; [L401] int retValue_acc ; [L404] retValue_acc = methaneLevelCritical [L405] return (retValue_acc); [L580] tmp = isMethaneLevelCritical() [L582] COND FALSE !(\read(tmp)) [L433] int retValue_acc ; [L436] retValue_acc = waterLevel [L437] return (retValue_acc); [L586] tmp___0 = getWaterLevel() [L588] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:14:34,479 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...