./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product51.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_spec2_product51.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 2d6bd7a2d1728d381423fedea6f747367a642c2a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:05:05,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:05,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:05,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:05,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:05,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:05,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:05,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:05,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:05,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:05,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:05,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:05,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:05,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:05,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:05,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:05,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:05,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:05,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:05,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:05,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:05,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:05,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:05,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:05,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:05,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:05,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:05,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:05,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:05,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:05,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:05,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:05,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:05,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:05,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:05,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:05,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:05,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:05,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:05,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:05,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:05,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:05,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:05,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:05,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:05,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:05,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:05,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:05,153 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:05,153 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:05,153 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:05,153 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:05,153 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:05,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:05,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:05,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:05,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:05,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:05,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:05,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:05,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:05,160 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:05,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d6bd7a2d1728d381423fedea6f747367a642c2a [2021-08-27 16:05:05,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:05,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:05,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:05,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:05,443 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:05,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2021-08-27 16:05:05,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3888dae51/a2a97621cfe74734bfd9f56b3492beec/FLAG7881cb0f3 [2021-08-27 16:05:05,863 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:05,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2021-08-27 16:05:05,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3888dae51/a2a97621cfe74734bfd9f56b3492beec/FLAG7881cb0f3 [2021-08-27 16:05:06,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3888dae51/a2a97621cfe74734bfd9f56b3492beec [2021-08-27 16:05:06,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:06,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:06,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:06,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:06,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:06,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d04ad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06, skipping insertion in model container [2021-08-27 16:05:06,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:06,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:06,532 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_spec2_product51.cil.c[9005,9018] [2021-08-27 16:05:06,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:06,602 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:06,638 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_spec2_product51.cil.c[9005,9018] [2021-08-27 16:05:06,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:06,675 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:06,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06 WrapperNode [2021-08-27 16:05:06,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:06,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:06,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:06,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:06,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:06,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:06,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:06,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:06,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:06,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:06,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:06,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:06,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (1/1) ... [2021-08-27 16:05:06,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:06,842 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 16:05:06,902 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 16:05:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:07,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:07,633 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-08-27 16:05:07,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:07 BoogieIcfgContainer [2021-08-27 16:05:07,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:07,635 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:07,635 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:07,646 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:07,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:07,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:06" (1/3) ... [2021-08-27 16:05:07,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11e3e325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:07, skipping insertion in model container [2021-08-27 16:05:07,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:07,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:06" (2/3) ... [2021-08-27 16:05:07,648 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11e3e325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:07, skipping insertion in model container [2021-08-27 16:05:07,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:07,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:07" (3/3) ... [2021-08-27 16:05:07,649 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2021-08-27 16:05:07,682 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:07,683 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:07,683 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:07,683 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:07,683 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:07,683 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:07,683 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:07,683 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:07,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.546218487394958) internal successors, (184), 119 states have internal predecessors, (184), 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 16:05:07,714 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:05:07,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:07,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:07,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:07,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:07,719 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:07,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.546218487394958) internal successors, (184), 119 states have internal predecessors, (184), 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 16:05:07,727 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:05:07,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:07,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:07,732 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:07,732 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:07,740 INFO L791 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~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~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 36#L-1true havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 7#L401true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 114#L409true main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 54#L601true assume 0 != main_~tmp~6; 63#L577true ~methAndRunningLastTime~0 := 0; 91#L343true 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; 38#L354-1true [2021-08-27 16:05:07,740 INFO L793 eck$LassoCheckResult]: Loop: 38#L354-1true assume !false; 35#L58true assume test_~splverifierCounter~0 < 4; 104#L59true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 111#L67true assume !(0 != test_~tmp~0); 95#L67-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 74#L77true assume !(0 != test_~tmp___0~0); 87#L77-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 51#L87true assume 0 != test_~tmp___2~0; 106#L93-1true assume !(0 != ~pumpRunning~0); 41#L131true assume !(0 != ~systemActive~0); 59#L138true havoc __utac_acc__Specification2_spec__2_#t~ret32, __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 105#L458true __utac_acc__Specification2_spec__2_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret32;havoc __utac_acc__Specification2_spec__2_#t~ret32; 53#L354true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 38#L354-1true [2021-08-27 16:05:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:05:07,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:07,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986175310] [2021-08-27 16:05:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:07,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:07,979 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,073 INFO L82 PathProgramCache]: Analyzing trace with hash 13096595, now seen corresponding path program 1 times [2021-08-27 16:05:08,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212569372] [2021-08-27 16:05:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,081 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,095 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash 846393101, now seen corresponding path program 1 times [2021-08-27 16:05:08,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690994911] [2021-08-27 16:05:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:08,218 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 16:05:08,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:08,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690994911] [2021-08-27 16:05:08,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690994911] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:08,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:08,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:05:08,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956007772] [2021-08-27 16:05:08,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:05:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:05:08,342 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 1.546218487394958) internal successors, (184), 119 states have internal predecessors, (184), 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 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 16:05:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:08,582 INFO L93 Difference]: Finished difference Result 286 states and 415 transitions. [2021-08-27 16:05:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:05:08,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 286 states and 415 transitions. [2021-08-27 16:05:08,588 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 183 [2021-08-27 16:05:08,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 286 states to 265 states and 394 transitions. [2021-08-27 16:05:08,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 265 [2021-08-27 16:05:08,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 265 [2021-08-27 16:05:08,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 265 states and 394 transitions. [2021-08-27 16:05:08,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:08,595 INFO L681 BuchiCegarLoop]: Abstraction has 265 states and 394 transitions. [2021-08-27 16:05:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states and 394 transitions. [2021-08-27 16:05:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 157. [2021-08-27 16:05:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 157 states have (on average 1.4777070063694266) internal successors, (232), 156 states have internal predecessors, (232), 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 16:05:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 232 transitions. [2021-08-27 16:05:08,630 INFO L704 BuchiCegarLoop]: Abstraction has 157 states and 232 transitions. [2021-08-27 16:05:08,630 INFO L587 BuchiCegarLoop]: Abstraction has 157 states and 232 transitions. [2021-08-27 16:05:08,631 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:05:08,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 232 transitions. [2021-08-27 16:05:08,632 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 108 [2021-08-27 16:05:08,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:08,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:08,633 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:08,633 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:08,633 INFO L791 eck$LassoCheckResult]: Stem: 537#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~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~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 478#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 430#L401 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 431#L409 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 500#L601 assume 0 != main_~tmp~6; 501#L577 ~methAndRunningLastTime~0 := 0; 508#L343 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; 433#L354-1 [2021-08-27 16:05:08,634 INFO L793 eck$LassoCheckResult]: Loop: 433#L354-1 assume !false; 476#L58 assume test_~splverifierCounter~0 < 4; 477#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 536#L67 assume !(0 != test_~tmp~0); 514#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 523#L77 assume !(0 != test_~tmp___0~0); 473#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 496#L87 assume 0 != test_~tmp___2~0; 469#L93-1 assume !(0 != ~pumpRunning~0); 462#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 484#L189 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 445#L163-1 assume !(0 == ~pumpRunning~0); 446#L138 havoc __utac_acc__Specification2_spec__2_#t~ret32, __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 503#L458 __utac_acc__Specification2_spec__2_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret32;havoc __utac_acc__Specification2_spec__2_#t~ret32; 498#L354 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 433#L354-1 [2021-08-27 16:05:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:05:08,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485672395] [2021-08-27 16:05:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,657 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:08,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1355202001, now seen corresponding path program 1 times [2021-08-27 16:05:08,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127982946] [2021-08-27 16:05:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:08,723 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 16:05:08,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:08,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127982946] [2021-08-27 16:05:08,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127982946] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:08,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:08,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:08,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200616469] [2021-08-27 16:05:08,726 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:08,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:08,727 INFO L87 Difference]: Start difference. First operand 157 states and 232 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:05:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:08,789 INFO L93 Difference]: Finished difference Result 199 states and 278 transitions. [2021-08-27 16:05:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:08,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 199 states and 278 transitions. [2021-08-27 16:05:08,791 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 140 [2021-08-27 16:05:08,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 199 states to 199 states and 278 transitions. [2021-08-27 16:05:08,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 199 [2021-08-27 16:05:08,792 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 199 [2021-08-27 16:05:08,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 199 states and 278 transitions. [2021-08-27 16:05:08,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:08,793 INFO L681 BuchiCegarLoop]: Abstraction has 199 states and 278 transitions. [2021-08-27 16:05:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states and 278 transitions. [2021-08-27 16:05:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-08-27 16:05:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 199 states have (on average 1.3969849246231156) internal successors, (278), 198 states have internal predecessors, (278), 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 16:05:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 278 transitions. [2021-08-27 16:05:08,798 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 278 transitions. [2021-08-27 16:05:08,798 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 278 transitions. [2021-08-27 16:05:08,798 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:05:08,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 278 transitions. [2021-08-27 16:05:08,799 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 140 [2021-08-27 16:05:08,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:08,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:08,799 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:08,799 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:08,799 INFO L791 eck$LassoCheckResult]: Stem: 914#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~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~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 843#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 792#L401 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 793#L409 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 868#L601 assume 0 != main_~tmp~6; 869#L577 ~methAndRunningLastTime~0 := 0; 876#L343 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; 795#L354-1 [2021-08-27 16:05:08,800 INFO L793 eck$LassoCheckResult]: Loop: 795#L354-1 assume !false; 841#L58 assume test_~splverifierCounter~0 < 4; 842#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 909#L67 assume !(0 != test_~tmp~0); 882#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 891#L77 assume !(0 != test_~tmp___0~0); 838#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 862#L87 assume 0 != test_~tmp___2~0; 864#L93-1 assume !(0 != ~pumpRunning~0); 912#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 899#L189 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 807#L163-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 808#L498-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 850#L503-1 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 797#L291-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 798#L291-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 826#L297-1 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 827#L167-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 812#L138 havoc __utac_acc__Specification2_spec__2_#t~ret32, __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 871#L458 __utac_acc__Specification2_spec__2_#t~ret32 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret32;havoc __utac_acc__Specification2_spec__2_#t~ret32; 866#L354 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 795#L354-1 [2021-08-27 16:05:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:05:08,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24514163] [2021-08-27 16:05:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,826 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash -803430243, now seen corresponding path program 1 times [2021-08-27 16:05:08,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800142121] [2021-08-27 16:05:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,882 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash 969711383, now seen corresponding path program 1 times [2021-08-27 16:05:08,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:08,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080454019] [2021-08-27 16:05:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:08,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,929 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:08,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:50,163 WARN L207 SmtUtils]: Spent 41.00 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:06:31,783 WARN L207 SmtUtils]: Spent 20.06 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:06:31,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:06:31 BoogieIcfgContainer [2021-08-27 16:06:31,864 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:06:31,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:06:31,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:06:31,864 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:06:31,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:07" (3/4) ... [2021-08-27 16:06:31,866 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:06:31,894 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:06:31,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:06:31,895 INFO L168 Benchmark]: Toolchain (without parser) took 85623.40 ms. Allocated memory was 62.9 MB in the beginning and 115.3 MB in the end (delta: 52.4 MB). Free memory was 43.1 MB in the beginning and 66.0 MB in the end (delta: -22.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,896 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 45.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:06:31,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.95 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 40.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 36.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,897 INFO L168 Benchmark]: Boogie Preprocessor took 53.71 ms. Allocated memory is still 62.9 MB. Free memory was 36.4 MB in the beginning and 33.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,897 INFO L168 Benchmark]: RCFGBuilder took 836.38 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.7 MB in the beginning and 41.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,898 INFO L168 Benchmark]: BuchiAutomizer took 84228.33 ms. Allocated memory was 75.5 MB in the beginning and 115.3 MB in the end (delta: 39.8 MB). Free memory was 41.9 MB in the beginning and 69.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,898 INFO L168 Benchmark]: Witness Printer took 30.78 ms. Allocated memory is still 115.3 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:31,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 45.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.95 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 40.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.67 ms. Allocated memory is still 62.9 MB. Free memory was 39.9 MB in the beginning and 36.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.71 ms. Allocated memory is still 62.9 MB. Free memory was 36.4 MB in the beginning and 33.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 836.38 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.7 MB in the beginning and 41.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84228.33 ms. Allocated memory was 75.5 MB in the beginning and 115.3 MB in the end (delta: 39.8 MB). Free memory was 41.9 MB in the beginning and 69.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 64.6 MB. Max. memory is 16.1 GB. * Witness Printer took 30.78 ms. Allocated memory is still 115.3 MB. Free memory was 68.1 MB in the beginning and 66.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 199 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 83.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 31.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 108 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 199 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 337 SDtfs, 776 SDslu, 836 SDs, 0 SdLazy, 73 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30063} State at position 1 is {NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17cc7a67=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a3357ef=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bcdfc7f=0, NULL=30063, NULL=0, NULL=30076, NULL=30079, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d31e4f5=0, NULL=0, retValue_acc=0, NULL=30078, NULL=0, tmp___1=0, NULL=30071, NULL=30064, NULL=0, NULL=30084, cleanupTimeShifts=4, tmp=0, NULL=30074, NULL=30067, NULL=0, NULL=0, waterLevel=1, NULL=0, NULL=30089, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=30091, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f665b5a=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f51443e=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=30086, NULL=0, NULL=0, NULL=0, NULL=0, methAndRunningLastTime=0, NULL=30083, NULL=30081, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bc1cf65=0, head=0, NULL=30066, NULL=30068, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e3118b1=0, NULL=0, NULL=0, NULL=30073, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7030f69c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cfb9d90=0, tmp___0=0, NULL=0, NULL=0, NULL=30077, NULL=0, NULL=0, tmp=0, NULL=30065, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=30090, retValue_acc=0, \result=0, retValue_acc=0, NULL=30087, \result=0, NULL=30075, NULL=0, NULL=30082, NULL=0, NULL=0, retValue_acc=1, NULL=30080, NULL=30070, tmp___0=0, tmp___2=56, splverifierCounter=0, NULL=0, \result=0, NULL=30085, NULL=30069, NULL=30088, tmp=0, NULL=30072} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L337] int methAndRunningLastTime ; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L518] int cleanupTimeShifts = 4; [L793] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L592] int retValue_acc ; [L593] int tmp ; [L405] int retValue_acc ; [L408] retValue_acc = 1 [L409] return (retValue_acc); [L599] tmp = valid_product() [L601] COND TRUE \read(tmp) [L342] methAndRunningLastTime = 0 [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 Loop: [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L495] int retValue_acc ; [L498] COND TRUE waterLevel < 2 [L499] retValue_acc = 1 [L500] return (retValue_acc); [L289] tmp = isHighWaterSensorDry() [L291] COND TRUE \read(tmp) [L292] tmp___0 = 0 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] tmp = isHighWaterLevel() [L167] COND FALSE !(\read(tmp)) [L347] int tmp ; [L348] int tmp___0 ; [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L352] tmp = isMethaneLevelCritical() [L354] COND FALSE !(\read(tmp)) [L370] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:06:31,943 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...