./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product50.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_product50.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 99571b525880b8ef5d438b0b12df7f7fd3755f6b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:11:55,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:11:55,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:11:55,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:11:55,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:11:55,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:11:55,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:11:55,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:11:55,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:11:55,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:11:55,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:11:55,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:11:55,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:11:55,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:11:55,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:11:55,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:11:55,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:11:55,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:11:55,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:11:55,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:11:55,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:11:55,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:11:55,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:11:55,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:11:55,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:11:55,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:11:55,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:11:55,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:11:55,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:11:55,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:11:55,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:11:55,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:11:55,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:11:55,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:11:55,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:11:55,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:11:55,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:11:55,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:11:55,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:11:55,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:11:55,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:11:55,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:11:55,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:11:55,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:11:55,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:11:55,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:11:55,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:11:55,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:11:55,762 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:11:55,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:11:55,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:11:55,763 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:11:55,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:11:55,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:11:55,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:11:55,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:11:55,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:11:55,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:11:55,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:11:55,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:11:55,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:11:55,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:11:55,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:11:55,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:11:55,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:11:55,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:11:55,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:11:55,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:11:55,768 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:11:55,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99571b525880b8ef5d438b0b12df7f7fd3755f6b [2021-08-27 16:11:56,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:11:56,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:11:56,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:11:56,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:11:56,095 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:11:56,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-08-27 16:11:56,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32827225/e7b3a3a151874775a677899501be649b/FLAGb95b72d38 [2021-08-27 16:11:56,595 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:11:56,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2021-08-27 16:11:56,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32827225/e7b3a3a151874775a677899501be649b/FLAGb95b72d38 [2021-08-27 16:11:56,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32827225/e7b3a3a151874775a677899501be649b [2021-08-27 16:11:56,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:11:56,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:11:56,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:11:56,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:11:56,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:11:56,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:11:56" (1/1) ... [2021-08-27 16:11:56,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56087d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:56, skipping insertion in model container [2021-08-27 16:11:56,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:11:56" (1/1) ... [2021-08-27 16:11:56,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:11:56,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:11:57,003 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_product50.cil.c[14819,14832] [2021-08-27 16:11:57,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:11:57,023 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:11:57,063 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_product50.cil.c[14819,14832] [2021-08-27 16:11:57,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:11:57,090 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:11:57,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57 WrapperNode [2021-08-27 16:11:57,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:11:57,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:11:57,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:11:57,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:11:57,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:11:57,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:11:57,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:11:57,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:11:57,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:11:57,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:11:57,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:11:57,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:11:57,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (1/1) ... [2021-08-27 16:11:57,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:11:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:11:57,211 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 16:11:57,220 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 16:11:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:11:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:11:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:11:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:11:58,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:11:58,045 INFO L299 CfgBuilder]: Removed 164 assume(true) statements. [2021-08-27 16:11:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:58 BoogieIcfgContainer [2021-08-27 16:11:58,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:11:58,049 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:11:58,050 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:11:58,053 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:11:58,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:58,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:11:56" (1/3) ... [2021-08-27 16:11:58,055 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1307c5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:11:58, skipping insertion in model container [2021-08-27 16:11:58,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:58,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:57" (2/3) ... [2021-08-27 16:11:58,056 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1307c5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:11:58, skipping insertion in model container [2021-08-27 16:11:58,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:58,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:58" (3/3) ... [2021-08-27 16:11:58,057 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2021-08-27 16:11:58,103 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:11:58,103 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:11:58,103 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:11:58,104 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:11:58,104 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:11:58,104 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:11:58,104 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:11:58,104 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:11:58,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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 16:11:58,151 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:11:58,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:58,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:58,158 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,159 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,159 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:11:58,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 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 16:11:58,168 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 16:11:58,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:58,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:58,169 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,169 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,173 INFO L791 eck$LassoCheckResult]: Stem: 109#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 40#L-1true havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 90#L679true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 48#L687true main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 36#L643true assume 0 != main_~tmp~4; 97#L616true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 58#L427-1true [2021-08-27 16:11:58,174 INFO L793 eck$LassoCheckResult]: Loop: 58#L427-1true assume !false; 88#L713true assume test_~splverifierCounter~0 < 4; 11#L714true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 55#L722true assume !(0 != test_~tmp~5); 37#L722-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 28#L732true assume !(0 != test_~tmp___0~1); 51#L732-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 38#L742true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 46#L750-2true assume !(0 != ~pumpRunning~0); 14#L778true assume !(0 != ~systemActive~0); 116#L785true havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 23#L495true __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 34#L421true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 58#L427-1true [2021-08-27 16:11:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:11:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:58,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879078952] [2021-08-27 16:11:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:58,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:58,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:58,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:58,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:58,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1678820874, now seen corresponding path program 1 times [2021-08-27 16:11:58,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:58,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110141017] [2021-08-27 16:11:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:58,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:58,605 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 16:11:58,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:58,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110141017] [2021-08-27 16:11:58,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110141017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:58,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:58,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:58,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519753401] [2021-08-27 16:11:58,611 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:58,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:11:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:11:58,625 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 119 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:58,673 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2021-08-27 16:11:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:11:58,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 173 transitions. [2021-08-27 16:11:58,686 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:11:58,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 113 states and 165 transitions. [2021-08-27 16:11:58,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2021-08-27 16:11:58,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2021-08-27 16:11:58,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 165 transitions. [2021-08-27 16:11:58,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:58,697 INFO L681 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-08-27 16:11:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 165 transitions. [2021-08-27 16:11:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-27 16:11:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 113 states have (on average 1.4601769911504425) internal successors, (165), 112 states have internal predecessors, (165), 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 16:11:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-08-27 16:11:58,734 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-08-27 16:11:58,734 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-08-27 16:11:58,734 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:11:58,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 165 transitions. [2021-08-27 16:11:58,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:11:58,739 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:58,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:58,739 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,740 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:58,741 INFO L791 eck$LassoCheckResult]: Stem: 359#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 317#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 318#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 326#L687 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 310#L643 assume 0 != main_~tmp~4; 311#L616 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 307#L427-1 [2021-08-27 16:11:58,741 INFO L793 eck$LassoCheckResult]: Loop: 307#L427-1 assume !false; 339#L713 assume test_~splverifierCounter~0 < 4; 265#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 266#L722 assume !(0 != test_~tmp~5); 312#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 296#L732 assume !(0 != test_~tmp___0~1); 297#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 313#L742 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 314#L750-2 assume !(0 != ~pumpRunning~0); 271#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 272#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 276#L810-1 assume !(0 == ~pumpRunning~0); 254#L785 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 288#L495 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 289#L421 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 307#L427-1 [2021-08-27 16:11:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:58,742 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:11:58,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:58,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244917421] [2021-08-27 16:11:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:58,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:58,816 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:58,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:58,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1079829900, now seen corresponding path program 1 times [2021-08-27 16:11:58,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:58,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468398374] [2021-08-27 16:11:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:58,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:58,924 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 16:11:58,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:58,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468398374] [2021-08-27 16:11:58,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468398374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:58,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:58,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:58,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548138439] [2021-08-27 16:11:58,925 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:58,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:11:58,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:11:58,926 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. cyclomatic complexity: 54 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 16:11:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:58,992 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2021-08-27 16:11:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:11:58,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 222 transitions. [2021-08-27 16:11:58,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-08-27 16:11:58,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 222 transitions. [2021-08-27 16:11:58,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2021-08-27 16:11:58,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 160 [2021-08-27 16:11:58,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 222 transitions. [2021-08-27 16:11:58,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:58,997 INFO L681 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-08-27 16:11:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 222 transitions. [2021-08-27 16:11:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-08-27 16:11:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.3875) internal successors, (222), 159 states have internal predecessors, (222), 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 16:11:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2021-08-27 16:11:59,004 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-08-27 16:11:59,004 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 222 transitions. [2021-08-27 16:11:59,004 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:11:59,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 222 transitions. [2021-08-27 16:11:59,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2021-08-27 16:11:59,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:59,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:59,006 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:59,006 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 16:11:59,006 INFO L791 eck$LassoCheckResult]: Stem: 644#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 597#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 598#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 606#L687 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 590#L643 assume 0 != main_~tmp~4; 591#L616 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 640#L427-1 [2021-08-27 16:11:59,007 INFO L793 eck$LassoCheckResult]: Loop: 640#L427-1 assume !false; 635#L713 assume test_~splverifierCounter~0 < 4; 543#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 544#L722 assume !(0 != test_~tmp~5); 592#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 574#L732 assume !(0 != test_~tmp___0~1); 575#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 593#L742 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 594#L750-2 assume !(0 != ~pumpRunning~0); 550#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 551#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 554#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 627#L535-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 528#L540-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 529#L938-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 599#L938-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 568#L944-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 569#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 625#L785 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 660#L495 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 656#L421 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 640#L427-1 [2021-08-27 16:11:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:11:59,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174291821] [2021-08-27 16:11:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,034 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,077 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -246413056, now seen corresponding path program 1 times [2021-08-27 16:11:59,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570943898] [2021-08-27 16:11:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 209658138, now seen corresponding path program 1 times [2021-08-27 16:11:59,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553744024] [2021-08-27 16:11:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:59,155 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 16:11:59,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:59,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553744024] [2021-08-27 16:11:59,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553744024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:59,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:59,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:59,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617046269] [2021-08-27 16:11:59,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:11:59,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:11:59,426 INFO L87 Difference]: Start difference. First operand 160 states and 222 transitions. cyclomatic complexity: 64 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 16:11:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:59,546 INFO L93 Difference]: Finished difference Result 555 states and 776 transitions. [2021-08-27 16:11:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:11:59,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 555 states and 776 transitions. [2021-08-27 16:11:59,551 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 408 [2021-08-27 16:11:59,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 555 states to 555 states and 776 transitions. [2021-08-27 16:11:59,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 555 [2021-08-27 16:11:59,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 555 [2021-08-27 16:11:59,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 555 states and 776 transitions. [2021-08-27 16:11:59,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:59,557 INFO L681 BuchiCegarLoop]: Abstraction has 555 states and 776 transitions. [2021-08-27 16:11:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states and 776 transitions. [2021-08-27 16:11:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 314. [2021-08-27 16:11:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 314 states have (on average 1.3694267515923566) internal successors, (430), 313 states have internal predecessors, (430), 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 16:11:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 430 transitions. [2021-08-27 16:11:59,572 INFO L704 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-08-27 16:11:59,572 INFO L587 BuchiCegarLoop]: Abstraction has 314 states and 430 transitions. [2021-08-27 16:11:59,572 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:11:59,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 314 states and 430 transitions. [2021-08-27 16:11:59,573 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 220 [2021-08-27 16:11:59,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:59,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:59,574 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:59,574 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:59,575 INFO L791 eck$LassoCheckResult]: Stem: 1397#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1331#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 1332#L679 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1341#L687 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 1324#L643 assume 0 != main_~tmp~4; 1325#L616 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1390#L427-1 [2021-08-27 16:11:59,575 INFO L793 eck$LassoCheckResult]: Loop: 1390#L427-1 assume !false; 1537#L713 assume test_~splverifierCounter~0 < 4; 1276#L714 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1277#L722 assume !(0 != test_~tmp~5); 1326#L722-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1313#L732 assume !(0 != test_~tmp___0~1); 1314#L732-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1327#L742 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1328#L750-2 assume !(0 != ~pumpRunning~0); 1283#L778 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1284#L836 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1543#L810-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1369#L535-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1261#L540-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 1262#L938-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~2 := 0; 1439#L938-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1304#L944-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1305#L814-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1367#L785 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1300#L495 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 1301#L421 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1377#L527 __utac_acc__Specification3_spec__1_#t~ret43 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret43;havoc __utac_acc__Specification3_spec__1_#t~ret43; 1378#L427 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1390#L427-1 [2021-08-27 16:11:59,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:11:59,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431790068] [2021-08-27 16:11:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,609 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,660 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:59,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,661 INFO L82 PathProgramCache]: Analyzing trace with hash -579737614, now seen corresponding path program 1 times [2021-08-27 16:11:59,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580836642] [2021-08-27 16:11:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,668 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash -381984372, now seen corresponding path program 1 times [2021-08-27 16:11:59,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:59,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922432349] [2021-08-27 16:11:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:59,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,722 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:59,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:38,378 WARN L207 SmtUtils]: Spent 38.32 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:13:17,208 WARN L207 SmtUtils]: Spent 18.89 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:13:17,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:13:17 BoogieIcfgContainer [2021-08-27 16:13:17,306 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:13:17,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:13:17,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:13:17,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:13:17,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:58" (3/4) ... [2021-08-27 16:13:17,311 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:13:17,354 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:13:17,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:13:17,355 INFO L168 Benchmark]: Toolchain (without parser) took 80722.07 ms. Allocated memory was 60.8 MB in the beginning and 134.2 MB in the end (delta: 73.4 MB). Free memory was 38.5 MB in the beginning and 42.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,355 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:13:17,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.92 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 35.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.92 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 31.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,356 INFO L168 Benchmark]: Boogie Preprocessor took 32.19 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 28.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,357 INFO L168 Benchmark]: RCFGBuilder took 862.26 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.7 MB in the beginning and 34.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,357 INFO L168 Benchmark]: BuchiAutomizer took 79256.79 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 34.3 MB in the beginning and 45.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,358 INFO L168 Benchmark]: Witness Printer took 45.88 ms. Allocated memory is still 134.2 MB. Free memory was 45.9 MB in the beginning and 42.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:17,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 456.92 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 35.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.92 ms. Allocated memory is still 60.8 MB. Free memory was 35.1 MB in the beginning and 31.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.19 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 28.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 862.26 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.7 MB in the beginning and 34.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 79256.79 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 34.3 MB in the beginning and 45.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. * Witness Printer took 45.88 ms. Allocated memory is still 134.2 MB. Free memory was 45.9 MB in the beginning and 42.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 314 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 79.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 78.7s. Construction of modules took 0.0s. 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 48.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 241 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 314 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 569 SDtfs, 954 SDslu, 855 SDs, 0 SdLazy, 76 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 712]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=15554} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58f82a4e=0, NULL=0, NULL=15554, NULL=15559, NULL=15580, NULL=15578, methaneLevelCritical=0, tmp=0, NULL=0, tmp___1=0, NULL=15561, NULL=0, NULL=15564, NULL=15565, cleanupTimeShifts=4, tmp=0, NULL=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=15570, NULL=0, tmp=1, NULL=0, retValue_acc=1, NULL=15560, tmp___0=0, NULL=15556, NULL=15574, head=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d16f494=0, NULL=15558, tmp=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7145e1e7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b5f41a5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7baa79ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3980e8e0=0, retValue_acc=0, NULL=15579, NULL=15557, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=15562, NULL=15563, NULL=15555, NULL=15567, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=15569, \result=1, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=15582, \result=0, NULL=15575, NULL=15577, NULL=15566, NULL=15571, retValue_acc=1, NULL=15568, NULL=15576, tmp___2=83, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15d5f042=0, \result=0, NULL=15581, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e5e2b58=83, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28e1e9f2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30f59226=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35873401=0, NULL=15572, NULL=0, NULL=15573} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L555] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L634] int retValue_acc ; [L635] int tmp ; [L683] int retValue_acc ; [L686] retValue_acc = 1 [L687] return (retValue_acc); [L641] tmp = valid_product() [L643] COND TRUE \read(tmp) [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 Loop: [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND FALSE !(\read(tmp)) [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND TRUE \read(tmp___2) [L971] systemActive = 1 [L778] COND FALSE !(\read(pumpRunning)) [L785] COND TRUE \read(systemActive) [L833] int tmp ; [L836] COND FALSE !(\read(pumpRunning)) [L807] int tmp ; [L810] COND TRUE ! pumpRunning [L930] int retValue_acc ; [L931] int tmp ; [L932] int tmp___0 ; [L532] int retValue_acc ; [L535] COND TRUE waterLevel < 2 [L536] retValue_acc = 1 [L537] return (retValue_acc); [L936] tmp = isHighWaterSensorDry() [L938] COND TRUE \read(tmp) [L939] tmp___0 = 0 [L943] retValue_acc = tmp___0 [L944] return (retValue_acc); [L812] tmp = isHighWaterLevel() [L814] COND FALSE !(\read(tmp)) [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L491] int retValue_acc ; [L494] retValue_acc = methaneLevelCritical [L495] return (retValue_acc); [L419] tmp = isMethaneLevelCritical() [L421] COND FALSE !(\read(tmp)) [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L425] tmp___0 = getWaterLevel() [L427] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:13:17,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...