./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product52.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_product52.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 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:12:00,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:12:00,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:12:00,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:12:00,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:12:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:12:00,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:12:00,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:12:00,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:12:00,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:12:00,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:12:00,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:12:00,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:12:00,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:12:00,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:12:00,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:12:00,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:12:00,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:12:00,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:12:00,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:12:00,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:12:00,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:12:00,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:12:00,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:12:00,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:12:00,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:12:00,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:12:00,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:12:00,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:12:00,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:12:00,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:12:00,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:12:00,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:12:00,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:12:00,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:12:00,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:12:00,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:12:00,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:12:00,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:12:00,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:12:00,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:12:00,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:12:00,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:12:00,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:12:00,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:12:00,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:12:00,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:12:00,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:12:00,239 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:12:00,240 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:12:00,240 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:12:00,240 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:12:00,241 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:12:00,241 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:12:00,241 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:12:00,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:12:00,241 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:12:00,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:12:00,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:12:00,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:12:00,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:12:00,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:12:00,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:12:00,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:12:00,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:12:00,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:12:00,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:12:00,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:12:00,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:12:00,256 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:12:00,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb [2021-08-27 16:12:00,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:12:00,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:12:00,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:12:00,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:12:00,563 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:12:00,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-08-27 16:12:00,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428d072b/85fa0fa560c342609da03befcaa3e610/FLAGe50d8573e [2021-08-27 16:12:01,183 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:12:01,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-08-27 16:12:01,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428d072b/85fa0fa560c342609da03befcaa3e610/FLAGe50d8573e [2021-08-27 16:12:01,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428d072b/85fa0fa560c342609da03befcaa3e610 [2021-08-27 16:12:01,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:12:01,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:12:01,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:01,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:12:01,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:12:01,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:01,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54314d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01, skipping insertion in model container [2021-08-27 16:12:01,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:01,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:12:01,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:12:01,838 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_product52.cil.c[16932,16945] [2021-08-27 16:12:01,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:01,853 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:12:01,903 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_product52.cil.c[16932,16945] [2021-08-27 16:12:01,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:01,926 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:12:01,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01 WrapperNode [2021-08-27 16:12:01,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:01,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:01,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:12:01,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:12:01,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:01,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:02,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:12:02,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:12:02,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:12:02,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:12:02,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:12:02,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:12:02,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:12:02,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (1/1) ... [2021-08-27 16:12:02,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:12:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:12:02,114 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 16:12:02,160 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 16:12:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:12:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:12:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:12:02,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:12:02,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:12:02,962 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-08-27 16:12:02,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:02 BoogieIcfgContainer [2021-08-27 16:12:02,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:12:02,964 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:12:02,965 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:12:02,967 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:12:02,968 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:02,968 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:12:01" (1/3) ... [2021-08-27 16:12:02,969 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2c9885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:02, skipping insertion in model container [2021-08-27 16:12:02,969 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:02,969 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:01" (2/3) ... [2021-08-27 16:12:02,969 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2c9885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:02, skipping insertion in model container [2021-08-27 16:12:02,969 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:02,970 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:02" (3/3) ... [2021-08-27 16:12:02,971 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-08-27 16:12:03,005 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:12:03,006 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:12:03,006 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:12:03,006 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:12:03,006 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:12:03,006 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:12:03,006 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:12:03,006 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:12:03,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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 16:12:03,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-08-27 16:12:03,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:03,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:03,050 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,050 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,050 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:12:03,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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 16:12:03,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-08-27 16:12:03,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:03,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:03,058 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,058 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,062 INFO L791 eck$LassoCheckResult]: Stem: 116#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);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(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 36#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 53#L885true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 79#L893true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 88#L980true assume 0 != main_~tmp~9; 61#L957true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 104#L61-1true [2021-08-27 16:12:03,063 INFO L793 eck$LassoCheckResult]: Loop: 104#L61-1true assume !false; 37#L793true assume test_~splverifierCounter~0 < 4; 94#L794true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 51#L802true assume !(0 != test_~tmp~8); 59#L802-1true test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 78#L812true assume !(0 != test_~tmp___0~3); 105#L812-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 74#L822true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 120#L830-1true assume !(0 != ~pumpRunning~0); 123#L568true assume !(0 != ~systemActive~0); 12#L575true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 109#L129true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 57#L55true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 104#L61-1true [2021-08-27 16:12:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:12:03,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:03,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447894297] [2021-08-27 16:12:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:03,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:03,286 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:03,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1670232129, now seen corresponding path program 1 times [2021-08-27 16:12:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:03,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565665387] [2021-08-27 16:12:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:03,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:03,497 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 16:12:03,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:03,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565665387] [2021-08-27 16:12:03,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565665387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:03,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:03,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:03,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707620850] [2021-08-27 16:12:03,506 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:12:03,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:12:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:12:03,522 INFO L87 Difference]: Start difference. First operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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 16:12:03,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:03,620 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2021-08-27 16:12:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:12:03,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 238 states and 348 transitions. [2021-08-27 16:12:03,632 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-08-27 16:12:03,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 238 states to 224 states and 333 transitions. [2021-08-27 16:12:03,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-08-27 16:12:03,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-08-27 16:12:03,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2021-08-27 16:12:03,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:03,648 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-08-27 16:12:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2021-08-27 16:12:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-08-27 16:12:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 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 16:12:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-08-27 16:12:03,703 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 16:12:03,703 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 16:12:03,703 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:12:03,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-08-27 16:12:03,709 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:12:03,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:03,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:03,710 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,710 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:03,711 INFO L791 eck$LassoCheckResult]: Stem: 516#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);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(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 420#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 421#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 445#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 484#L980 assume 0 != main_~tmp~9; 459#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 451#L61-1 [2021-08-27 16:12:03,711 INFO L793 eck$LassoCheckResult]: Loop: 451#L61-1 assume !false; 524#L793 assume test_~splverifierCounter~0 < 4; 497#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 498#L802 assume !(0 != test_~tmp~8); 544#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 483#L812 assume !(0 != test_~tmp___0~3); 402#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 475#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 476#L830-1 assume !(0 != ~pumpRunning~0); 510#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 467#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 469#L600-1 assume !(0 == ~pumpRunning~0); 528#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 512#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 450#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 451#L61-1 [2021-08-27 16:12:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:12:03,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:03,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297164373] [2021-08-27 16:12:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:03,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:03,770 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:03,851 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1415980259, now seen corresponding path program 1 times [2021-08-27 16:12:03,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:03,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949134331] [2021-08-27 16:12:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:03,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:03,876 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 16:12:03,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:03,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949134331] [2021-08-27 16:12:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949134331] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:03,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:03,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:03,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089034748] [2021-08-27 16:12:03,882 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:12:03,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:12:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:12:03,885 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 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 16:12:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:04,033 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2021-08-27 16:12:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:12:04,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 448 transitions. [2021-08-27 16:12:04,038 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 16:12:04,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 448 transitions. [2021-08-27 16:12:04,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-08-27 16:12:04,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-08-27 16:12:04,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 448 transitions. [2021-08-27 16:12:04,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:04,048 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-08-27 16:12:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 448 transitions. [2021-08-27 16:12:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-08-27 16:12:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 317 states have (on average 1.413249211356467) internal successors, (448), 316 states have internal predecessors, (448), 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 16:12:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2021-08-27 16:12:04,063 INFO L704 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-08-27 16:12:04,063 INFO L587 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-08-27 16:12:04,063 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:12:04,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 448 transitions. [2021-08-27 16:12:04,066 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-08-27 16:12:04,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:04,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:04,068 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:04,068 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 16:12:04,068 INFO L791 eck$LassoCheckResult]: Stem: 1063#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);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(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 966#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 967#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 994#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 1027#L980 assume 0 != main_~tmp~9; 1006#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 999#L61-1 [2021-08-27 16:12:04,068 INFO L793 eck$LassoCheckResult]: Loop: 999#L61-1 assume !false; 968#L793 assume test_~splverifierCounter~0 < 4; 969#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 991#L802 assume !(0 != test_~tmp~8); 938#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 1003#L812 assume !(0 != test_~tmp___0~3); 948#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 1019#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1020#L830-1 assume !(0 != ~pumpRunning~0); 1069#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1011#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1008#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 992#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 993#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1045#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 1046#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 957#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 958#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 927#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 928#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 998#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 999#L61-1 [2021-08-27 16:12:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:12:04,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992881331] [2021-08-27 16:12:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,109 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash 890409545, now seen corresponding path program 1 times [2021-08-27 16:12:04,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67776882] [2021-08-27 16:12:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,195 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1346480739, now seen corresponding path program 1 times [2021-08-27 16:12:04,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125557641] [2021-08-27 16:12:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:04,289 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 16:12:04,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:04,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125557641] [2021-08-27 16:12:04,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125557641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:04,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:04,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:04,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712556349] [2021-08-27 16:12:04,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:12:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:12:04,687 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. cyclomatic complexity: 134 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 16:12:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:04,829 INFO L93 Difference]: Finished difference Result 1101 states and 1566 transitions. [2021-08-27 16:12:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:12:04,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1101 states and 1566 transitions. [2021-08-27 16:12:04,837 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 834 [2021-08-27 16:12:04,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1101 states to 1101 states and 1566 transitions. [2021-08-27 16:12:04,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1101 [2021-08-27 16:12:04,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1101 [2021-08-27 16:12:04,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1101 states and 1566 transitions. [2021-08-27 16:12:04,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:04,845 INFO L681 BuchiCegarLoop]: Abstraction has 1101 states and 1566 transitions. [2021-08-27 16:12:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states and 1566 transitions. [2021-08-27 16:12:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 628. [2021-08-27 16:12:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 628 states have (on average 1.39171974522293) internal successors, (874), 627 states have internal predecessors, (874), 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 16:12:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2021-08-27 16:12:04,860 INFO L704 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-08-27 16:12:04,860 INFO L587 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-08-27 16:12:04,860 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:12:04,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 874 transitions. [2021-08-27 16:12:04,863 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-08-27 16:12:04,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:04,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:04,863 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:04,863 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 16:12:04,864 INFO L791 eck$LassoCheckResult]: Stem: 2494#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);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(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2403#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 2404#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 2431#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 2465#L980 assume 0 != main_~tmp~9; 2441#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2442#L61-1 [2021-08-27 16:12:04,864 INFO L793 eck$LassoCheckResult]: Loop: 2442#L61-1 assume !false; 2405#L793 assume test_~splverifierCounter~0 < 4; 2406#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 2428#L802 assume !(0 != test_~tmp~8); 2376#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 2438#L812 assume !(0 != test_~tmp___0~3); 2464#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2455#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2456#L830-1 assume !(0 != ~pumpRunning~0); 2708#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2707#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2702#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2703#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2699#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2696#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 2693#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2691#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 2530#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2365#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2366#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2435#L55 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2362#L161 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2363#L61 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2442#L61-1 [2021-08-27 16:12:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,864 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:12:04,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772627911] [2021-08-27 16:12:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,891 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,915 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash 985089051, now seen corresponding path program 1 times [2021-08-27 16:12:04,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484695841] [2021-08-27 16:12:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,921 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:04,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1182842293, now seen corresponding path program 1 times [2021-08-27 16:12:04,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:04,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815175771] [2021-08-27 16:12:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:04,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,947 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:04,978 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:45,362 WARN L207 SmtUtils]: Spent 40.04 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:13:28,041 WARN L207 SmtUtils]: Spent 21.24 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:13:28,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:13:28 BoogieIcfgContainer [2021-08-27 16:13:28,168 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:13:28,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:13:28,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:13:28,168 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:13:28,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:02" (3/4) ... [2021-08-27 16:13:28,171 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:13:28,259 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:13:28,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:13:28,262 INFO L168 Benchmark]: Toolchain (without parser) took 86740.73 ms. Allocated memory was 50.3 MB in the beginning and 111.1 MB in the end (delta: 60.8 MB). Free memory was 26.5 MB in the beginning and 28.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,263 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:13:28,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.86 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 36.9 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.26 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 33.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,265 INFO L168 Benchmark]: Boogie Preprocessor took 61.67 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 30.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,265 INFO L168 Benchmark]: RCFGBuilder took 891.53 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 43.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,266 INFO L168 Benchmark]: BuchiAutomizer took 85203.12 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 43.6 MB in the beginning and 31.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,266 INFO L168 Benchmark]: Witness Printer took 91.16 ms. Allocated memory is still 111.1 MB. Free memory was 30.4 MB in the beginning and 28.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:28,270 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 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.86 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 36.9 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.26 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 33.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.67 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 30.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 891.53 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 43.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85203.12 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 43.6 MB in the beginning and 31.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. * Witness Printer took 91.16 ms. Allocated memory is still 111.1 MB. Free memory was 30.4 MB in the beginning and 28.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 628 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 84.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 73.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 628 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 608 SDtfs, 985 SDslu, 1058 SDs, 0 SdLazy, 85 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 195.4ms 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: 792]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31994} State at position 1 is {NULL=0, NULL=0, NULL=31994, NULL=36382, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d8c914e=0, NULL=36375, methaneLevelCritical=0, retValue_acc=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=36378, tmp=0, cleanupTimeShifts=4, NULL=36390, NULL=36394, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@104096d4=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, retValue_acc=1, \result=1, NULL=36391, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=36398, NULL=36384, head=0, tmp=0, tmp=1, NULL=0, NULL=36397, NULL=36396, NULL=36399, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ac57659=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49500c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1120005b=0, NULL=0, NULL=36387, NULL=36393, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a49581d=0, NULL=0, NULL=0, NULL=36377, NULL=0, tmp___0=1, tmp=0, NULL=36388, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65143b28=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@301686d=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@615b5ec0=0, NULL=0, systemActive=1, NULL=36380, \result=1, \result=0, NULL=36379, NULL=0, NULL=0, NULL=36395, retValue_acc=0, NULL=36392, \result=0, NULL=36383, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c1061c=0, NULL=36386, NULL=36389, NULL=31996, tmp___2=68, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=31995, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21882f51=0, NULL=36376, NULL=36381, NULL=0, NULL=0, NULL=0, NULL=36374, NULL=36385} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L561] int pumpRunning = 0; [L562] int systemActive = 1; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L889] int retValue_acc ; [L892] retValue_acc = 1 [L893] return (retValue_acc); [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 Loop: [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND FALSE !(\read(tmp)) [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND TRUE \read(tmp___2) [L776] systemActive = 1 [L568] COND FALSE !(\read(pumpRunning)) [L575] COND TRUE \read(systemActive) [L623] int tmp ; [L626] COND FALSE !(\read(pumpRunning)) [L597] int tmp ; [L600] COND TRUE ! pumpRunning [L720] int retValue_acc ; [L721] int tmp ; [L722] int tmp___0 ; [L166] int retValue_acc ; [L169] COND TRUE waterLevel < 2 [L170] retValue_acc = 1 [L171] return (retValue_acc); [L726] tmp = isHighWaterSensorDry() [L728] COND TRUE \read(tmp) [L729] tmp___0 = 0 [L733] retValue_acc = tmp___0 [L734] return (retValue_acc); [L602] tmp = isHighWaterLevel() [L604] COND FALSE !(\read(tmp)) [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L59] tmp___0 = getWaterLevel() [L61] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:13:28,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...