./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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_spec5_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 4074665f53184e0f9778b3e4e6ee9c58d8a047121518f9c126ceccd876afea36 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:40:08,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:40:08,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:40:08,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:40:08,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:40:08,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:40:08,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:40:08,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:40:08,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:40:08,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:40:08,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:40:08,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:40:08,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:40:08,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:40:08,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:40:08,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:40:08,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:40:08,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:40:08,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:40:08,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:40:08,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:40:08,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:40:08,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:40:08,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:40:08,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:40:08,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:40:08,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:40:08,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:40:08,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:40:08,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:40:08,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:40:08,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:40:08,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:40:08,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:40:08,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:40:08,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:40:08,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:40:08,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:40:08,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:40:08,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:40:08,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:40:08,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:40:08,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:40:08,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:40:08,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:40:08,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:40:08,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:40:08,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:40:08,296 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:40:08,296 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:40:08,296 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:40:08,297 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:40:08,297 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:40:08,297 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:40:08,297 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:40:08,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:40:08,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:40:08,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:40:08,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:40:08,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:40:08,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:40:08,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:40:08,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:40:08,301 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:40:08,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074665f53184e0f9778b3e4e6ee9c58d8a047121518f9c126ceccd876afea36 [2021-12-14 23:40:08,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:40:08,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:40:08,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:40:08,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:40:08,507 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:40:08,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product52.cil.c [2021-12-14 23:40:08,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37caf0830/127cf7c5f1e74754b160136dadc4c7e9/FLAGf6a5700db [2021-12-14 23:40:08,953 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:40:08,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product52.cil.c [2021-12-14 23:40:08,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37caf0830/127cf7c5f1e74754b160136dadc4c7e9/FLAGf6a5700db [2021-12-14 23:40:08,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37caf0830/127cf7c5f1e74754b160136dadc4c7e9 [2021-12-14 23:40:08,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:40:08,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:40:08,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:08,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:40:08,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:40:08,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:08" (1/1) ... [2021-12-14 23:40:08,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551e3878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:08, skipping insertion in model container [2021-12-14 23:40:08,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:08" (1/1) ... [2021-12-14 23:40:08,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:40:09,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:40:09,227 WARN L230 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_spec5_product52.cil.c[12672,12685] [2021-12-14 23:40:09,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:09,281 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:40:09,323 WARN L230 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_spec5_product52.cil.c[12672,12685] [2021-12-14 23:40:09,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:09,359 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:40:09,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09 WrapperNode [2021-12-14 23:40:09,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:09,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:09,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:40:09,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:40:09,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,413 INFO L137 Inliner]: procedures = 59, calls = 160, calls flagged for inlining = 57, calls inlined = 87, statements flattened = 649 [2021-12-14 23:40:09,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:09,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:40:09,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:40:09,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:40:09,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:40:09,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:40:09,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:40:09,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:40:09,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (1/1) ... [2021-12-14 23:40:09,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:09,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:09,503 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) [2021-12-14 23:40:09,509 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 [2021-12-14 23:40:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:40:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:40:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:40:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:40:09,581 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:40:09,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:40:09,906 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:40:09,911 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:40:09,912 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:40:09,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:09 BoogieIcfgContainer [2021-12-14 23:40:09,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:40:09,914 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:40:09,914 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:40:09,930 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:40:09,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:09,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:40:08" (1/3) ... [2021-12-14 23:40:09,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25e2c781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:09, skipping insertion in model container [2021-12-14 23:40:09,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:09,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:09" (2/3) ... [2021-12-14 23:40:09,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25e2c781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:09, skipping insertion in model container [2021-12-14 23:40:09,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:09,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:09" (3/3) ... [2021-12-14 23:40:09,933 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2021-12-14 23:40:09,963 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:40:09,963 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:40:09,963 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:40:09,963 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:40:09,964 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:40:09,964 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:40:09,964 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:40:09,964 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:40:09,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 177 states, 176 states have (on average 1.3693181818181819) internal successors, (241), 176 states have internal predecessors, (241), 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) [2021-12-14 23:40:09,993 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 115 [2021-12-14 23:40:09,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:09,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:09,998 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:09,999 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] [2021-12-14 23:40:09,999 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:40:09,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 177 states, 176 states have (on average 1.3693181818181819) internal successors, (241), 176 states have internal predecessors, (241), 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) [2021-12-14 23:40:10,004 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 115 [2021-12-14 23:40:10,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:10,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:10,005 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:10,005 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] [2021-12-14 23:40:10,008 INFO L791 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 58#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 136#L1008true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 53#L1001true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 22#L1016true main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 49#L508true assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 90#L479true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 72#L539true assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 150#L702-2true [2021-12-14 23:40:10,009 INFO L793 eck$LassoCheckResult]: Loop: 150#L702-2true assume !false; 20#L703true assume test_~splverifierCounter~0#1 < 4; 75#L704true test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 86#L712true assume !(0 != test_~tmp~5#1); 77#L712-2true test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 83#L722true assume !(0 != test_~tmp___0~1#1); 177#L722-2true test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 42#L732true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 65#L740true assume !(0 != test_~tmp___1~0#1); 46#L740-2true assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 40#L884true __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 69#L549true assume { :end_inline___utac_acc__Specification5_spec__2 } true; 67#L773true assume !(0 != ~pumpRunning~0); 34#L773-2true assume !(0 != ~systemActive~0); 15#L780-1true assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 68#L662true __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 33#L560true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4#1); 144#L560-1true assume { :end_inline___utac_acc__Specification5_spec__3 } true; 94#L790true assume { :end_inline_timeShift } true; 150#L702-2true [2021-12-14 23:40:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-14 23:40:10,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603713926] [2021-12-14 23:40:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,104 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,159 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1925616167, now seen corresponding path program 1 times [2021-12-14 23:40:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405145445] [2021-12-14 23:40:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,183 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,189 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:10,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -495867824, now seen corresponding path program 1 times [2021-12-14 23:40:10,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764101232] [2021-12-14 23:40:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:10,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764101232] [2021-12-14 23:40:10,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764101232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:10,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:10,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:10,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526046984] [2021-12-14 23:40:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:10,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:40:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:40:10,511 INFO L87 Difference]: Start difference. First operand has 177 states, 176 states have (on average 1.3693181818181819) internal successors, (241), 176 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-12-14 23:40:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:10,664 INFO L93 Difference]: Finished difference Result 577 states and 759 transitions. [2021-12-14 23:40:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:40:10,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 577 states and 759 transitions. [2021-12-14 23:40:10,689 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 376 [2021-12-14 23:40:10,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 577 states to 537 states and 719 transitions. [2021-12-14 23:40:10,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 537 [2021-12-14 23:40:10,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 537 [2021-12-14 23:40:10,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 537 states and 719 transitions. [2021-12-14 23:40:10,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:10,712 INFO L681 BuchiCegarLoop]: Abstraction has 537 states and 719 transitions. [2021-12-14 23:40:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states and 719 transitions. [2021-12-14 23:40:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 225. [2021-12-14 23:40:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 224 states have internal predecessors, (300), 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) [2021-12-14 23:40:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2021-12-14 23:40:10,759 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 300 transitions. [2021-12-14 23:40:10,759 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 300 transitions. [2021-12-14 23:40:10,759 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:40:10,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 300 transitions. [2021-12-14 23:40:10,765 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 157 [2021-12-14 23:40:10,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:10,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:10,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:10,769 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:10,769 INFO L791 eck$LassoCheckResult]: Stem: 935#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 862#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 863#L1008 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 855#L1001 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 813#L1016 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 814#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 852#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 878#L539 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 879#L702-2 [2021-12-14 23:40:10,769 INFO L793 eck$LassoCheckResult]: Loop: 879#L702-2 assume !false; 808#L703 assume test_~splverifierCounter~0#1 < 4; 809#L704 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 883#L712 assume !(0 != test_~tmp~5#1); 884#L712-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 885#L722 assume !(0 != test_~tmp___0~1#1); 893#L722-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 844#L732 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 787#L982 assume { :end_inline_startSystem } true; 788#L740-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 840#L884 __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 841#L549 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 870#L773 assume !(0 != ~pumpRunning~0); 831#L773-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret41#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 832#L831 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 928#L805-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 833#L797-3 assume { :end_inline_processEnvironment__wrappee__base } true; 834#L805-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 858#L831-1 assume { :end_inline_processEnvironment } true; 797#L780-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 798#L662 __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 829#L560 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4#1); 819#L560-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 900#L790 assume { :end_inline_timeShift } true; 879#L702-2 [2021-12-14 23:40:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-14 23:40:10,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648938102] [2021-12-14 23:40:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,783 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,805 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1569690533, now seen corresponding path program 1 times [2021-12-14 23:40:10,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510201369] [2021-12-14 23:40:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:10,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:10,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510201369] [2021-12-14 23:40:10,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510201369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:10,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:40:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745399855] [2021-12-14 23:40:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:10,827 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:40:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:40:10,828 INFO L87 Difference]: Start difference. First operand 225 states and 300 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-14 23:40:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:10,893 INFO L93 Difference]: Finished difference Result 285 states and 364 transitions. [2021-12-14 23:40:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:40:10,893 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 285 states and 364 transitions. [2021-12-14 23:40:10,896 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 203 [2021-12-14 23:40:10,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 285 states to 285 states and 364 transitions. [2021-12-14 23:40:10,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 285 [2021-12-14 23:40:10,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 285 [2021-12-14 23:40:10,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 364 transitions. [2021-12-14 23:40:10,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:10,906 INFO L681 BuchiCegarLoop]: Abstraction has 285 states and 364 transitions. [2021-12-14 23:40:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 364 transitions. [2021-12-14 23:40:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-14 23:40:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 285 states have (on average 1.2771929824561403) internal successors, (364), 284 states have internal predecessors, (364), 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) [2021-12-14 23:40:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 364 transitions. [2021-12-14 23:40:10,919 INFO L704 BuchiCegarLoop]: Abstraction has 285 states and 364 transitions. [2021-12-14 23:40:10,919 INFO L587 BuchiCegarLoop]: Abstraction has 285 states and 364 transitions. [2021-12-14 23:40:10,919 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:40:10,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 285 states and 364 transitions. [2021-12-14 23:40:10,921 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 203 [2021-12-14 23:40:10,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:10,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:10,923 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:10,923 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:10,924 INFO L791 eck$LassoCheckResult]: Stem: 1465#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1376#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 1377#L1008 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1366#L1001 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 1328#L1016 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 1329#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 1362#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 1391#L539 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1392#L702-2 [2021-12-14 23:40:10,924 INFO L793 eck$LassoCheckResult]: Loop: 1392#L702-2 assume !false; 1533#L703 assume test_~splverifierCounter~0#1 < 4; 1396#L704 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 1397#L712 assume !(0 != test_~tmp~5#1); 1398#L712-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 1399#L722 assume !(0 != test_~tmp___0~1#1); 1408#L722-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 1353#L732 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1300#L982 assume { :end_inline_startSystem } true; 1301#L740-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 1349#L884 __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 1350#L549 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 1384#L773 assume !(0 != ~pumpRunning~0); 1342#L773-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret41#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 1343#L831 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 1452#L805-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret51#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1433#L670-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1434#L675-1 isHighWaterLevel_#t~ret51#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret51#1;havoc isHighWaterLevel_#t~ret51#1; 1431#L933-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 1432#L933-5 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 1336#L939-1 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 1316#L809-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1317#L797-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1359#L805-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1371#L831-1 assume { :end_inline_processEnvironment } true; 1372#L780-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 1572#L662 __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 1570#L560 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4#1); 1567#L560-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 1566#L790 assume { :end_inline_timeShift } true; 1392#L702-2 [2021-12-14 23:40:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-14 23:40:10,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246699611] [2021-12-14 23:40:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,943 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:10,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash 746500529, now seen corresponding path program 1 times [2021-12-14 23:40:10,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342867008] [2021-12-14 23:40:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:10,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:10,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342867008] [2021-12-14 23:40:10,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342867008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:10,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:10,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 23:40:10,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5647464] [2021-12-14 23:40:10,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:10,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:10,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 23:40:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 23:40:10,995 INFO L87 Difference]: Start difference. First operand 285 states and 364 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-14 23:40:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:11,055 INFO L93 Difference]: Finished difference Result 815 states and 1028 transitions. [2021-12-14 23:40:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:40:11,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 815 states and 1028 transitions. [2021-12-14 23:40:11,060 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 593 [2021-12-14 23:40:11,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 815 states to 815 states and 1028 transitions. [2021-12-14 23:40:11,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 815 [2021-12-14 23:40:11,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 815 [2021-12-14 23:40:11,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 815 states and 1028 transitions. [2021-12-14 23:40:11,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:11,064 INFO L681 BuchiCegarLoop]: Abstraction has 815 states and 1028 transitions. [2021-12-14 23:40:11,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states and 1028 transitions. [2021-12-14 23:40:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 297. [2021-12-14 23:40:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 297 states have (on average 1.265993265993266) internal successors, (376), 296 states have internal predecessors, (376), 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) [2021-12-14 23:40:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 376 transitions. [2021-12-14 23:40:11,089 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 376 transitions. [2021-12-14 23:40:11,089 INFO L587 BuchiCegarLoop]: Abstraction has 297 states and 376 transitions. [2021-12-14 23:40:11,089 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:40:11,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 297 states and 376 transitions. [2021-12-14 23:40:11,091 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 211 [2021-12-14 23:40:11,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:11,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:11,093 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,093 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,094 INFO L791 eck$LassoCheckResult]: Stem: 2583#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2489#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 2490#L1008 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2479#L1001 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 2437#L1016 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 2438#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 2475#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 2505#L539 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2506#L702-2 [2021-12-14 23:40:11,094 INFO L793 eck$LassoCheckResult]: Loop: 2506#L702-2 assume !false; 2652#L703 assume test_~splverifierCounter~0#1 < 4; 2511#L704 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 2512#L712 assume !(0 != test_~tmp~5#1); 2513#L712-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 2514#L722 assume !(0 != test_~tmp___0~1#1); 2524#L722-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 2466#L732 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 2467#L740 assume !(0 != test_~tmp___1~0#1); 2416#L740-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 2462#L884 __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 2463#L549 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 2497#L773 assume !(0 != ~pumpRunning~0); 2454#L773-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret41#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 2455#L831 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 2568#L805-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret51#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 2551#L670-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 2552#L675-1 isHighWaterLevel_#t~ret51#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret51#1;havoc isHighWaterLevel_#t~ret51#1; 2548#L933-3 assume !(0 != isHighWaterLevel_~tmp~8#1);isHighWaterLevel_~tmp___0~2#1 := 1; 2549#L933-5 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 2448#L939-1 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 2429#L809-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2430#L797-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2474#L805-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2484#L831-1 assume { :end_inline_processEnvironment } true; 2485#L780-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 2694#L662 __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 2692#L560 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4#1); 2689#L560-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 2653#L790 assume { :end_inline_timeShift } true; 2506#L702-2 [2021-12-14 23:40:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-14 23:40:11,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810891918] [2021-12-14 23:40:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,109 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash -636518239, now seen corresponding path program 1 times [2021-12-14 23:40:11,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901913738] [2021-12-14 23:40:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:11,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:11,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901913738] [2021-12-14 23:40:11,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901913738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:11,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:11,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:11,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739151501] [2021-12-14 23:40:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:11,138 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:11,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:40:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:40:11,139 INFO L87 Difference]: Start difference. First operand 297 states and 376 transitions. cyclomatic complexity: 82 Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-12-14 23:40:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:11,225 INFO L93 Difference]: Finished difference Result 966 states and 1222 transitions. [2021-12-14 23:40:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:40:11,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 966 states and 1222 transitions. [2021-12-14 23:40:11,232 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 712 [2021-12-14 23:40:11,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 966 states to 966 states and 1222 transitions. [2021-12-14 23:40:11,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 966 [2021-12-14 23:40:11,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 966 [2021-12-14 23:40:11,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 966 states and 1222 transitions. [2021-12-14 23:40:11,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:11,238 INFO L681 BuchiCegarLoop]: Abstraction has 966 states and 1222 transitions. [2021-12-14 23:40:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states and 1222 transitions. [2021-12-14 23:40:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 315. [2021-12-14 23:40:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 315 states have (on average 1.2507936507936508) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:40:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-12-14 23:40:11,243 INFO L704 BuchiCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-12-14 23:40:11,243 INFO L587 BuchiCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-12-14 23:40:11,243 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:40:11,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315 states and 394 transitions. [2021-12-14 23:40:11,244 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-12-14 23:40:11,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:11,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:11,245 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,245 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,245 INFO L791 eck$LassoCheckResult]: Stem: 3851#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 3761#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 3762#L1008 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3754#L1001 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 3713#L1016 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 3714#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 3750#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 3777#L539 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3778#L702-2 [2021-12-14 23:40:11,246 INFO L793 eck$LassoCheckResult]: Loop: 3778#L702-2 assume !false; 3708#L703 assume test_~splverifierCounter~0#1 < 4; 3709#L704 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 3783#L712 assume !(0 != test_~tmp~5#1); 3784#L712-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 3785#L722 assume !(0 != test_~tmp___0~1#1); 3960#L722-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 3959#L732 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 3958#L740 assume !(0 != test_~tmp___1~0#1); 3688#L740-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 3736#L884 __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 3737#L549 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 3769#L773 assume !(0 != ~pumpRunning~0); 3729#L773-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret41#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 3730#L831 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 3836#L805-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret51#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 3819#L670-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 3821#L675-1 isHighWaterLevel_#t~ret51#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret51#1;havoc isHighWaterLevel_#t~ret51#1; 3876#L933-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 3871#L933-5 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 3870#L939-1 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 3869#L809-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3746#L797-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3747#L805-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3758#L831-1 assume { :end_inline_processEnvironment } true; 3698#L780-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 3699#L662 __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 3727#L560 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4#1); 3719#L560-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 3802#L790 assume { :end_inline_timeShift } true; 3778#L702-2 [2021-12-14 23:40:11,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2021-12-14 23:40:11,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940271335] [2021-12-14 23:40:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,251 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 116433573, now seen corresponding path program 1 times [2021-12-14 23:40:11,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722721351] [2021-12-14 23:40:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:11,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722721351] [2021-12-14 23:40:11,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722721351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:11,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:11,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:11,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693365577] [2021-12-14 23:40:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:11,293 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:11,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:40:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:40:11,294 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. cyclomatic complexity: 82 Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-12-14 23:40:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:11,409 INFO L93 Difference]: Finished difference Result 805 states and 986 transitions. [2021-12-14 23:40:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:40:11,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 805 states and 986 transitions. [2021-12-14 23:40:11,413 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 529 [2021-12-14 23:40:11,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 805 states to 805 states and 986 transitions. [2021-12-14 23:40:11,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 805 [2021-12-14 23:40:11,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 805 [2021-12-14 23:40:11,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 805 states and 986 transitions. [2021-12-14 23:40:11,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:40:11,417 INFO L681 BuchiCegarLoop]: Abstraction has 805 states and 986 transitions. [2021-12-14 23:40:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states and 986 transitions. [2021-12-14 23:40:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 565. [2021-12-14 23:40:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 565 states have (on average 1.2265486725663717) internal successors, (693), 564 states have internal predecessors, (693), 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) [2021-12-14 23:40:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 693 transitions. [2021-12-14 23:40:11,424 INFO L704 BuchiCegarLoop]: Abstraction has 565 states and 693 transitions. [2021-12-14 23:40:11,424 INFO L587 BuchiCegarLoop]: Abstraction has 565 states and 693 transitions. [2021-12-14 23:40:11,424 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:40:11,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 565 states and 693 transitions. [2021-12-14 23:40:11,426 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 407 [2021-12-14 23:40:11,426 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:11,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:11,426 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,427 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:11,427 INFO L791 eck$LassoCheckResult]: Stem: 5009#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 4900#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 4901#L1008 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4892#L1001 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 4850#L1016 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 4851#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 4888#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 4918#L539 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 4919#L702-2 [2021-12-14 23:40:11,427 INFO L793 eck$LassoCheckResult]: Loop: 4919#L702-2 assume !false; 4845#L703 assume test_~splverifierCounter~0#1 < 4; 4846#L704 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 4924#L712 assume !(0 != test_~tmp~5#1); 4925#L712-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 4926#L722 assume !(0 != test_~tmp___0~1#1); 4934#L722-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 4878#L732 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 4823#L982 assume { :end_inline_startSystem } true; 4824#L740-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret28#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 4874#L884 __utac_acc__Specification5_spec__2_#t~ret28#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28#1;havoc __utac_acc__Specification5_spec__2_#t~ret28#1; 4875#L549 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 4912#L773 assume !(0 != ~pumpRunning~0); 4913#L773-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret41#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 4986#L831 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 4987#L805-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret51#1, isHighWaterLevel_~retValue_acc~10#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~10#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 4967#L670-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 4968#L675-1 isHighWaterLevel_#t~ret51#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret51#1;havoc isHighWaterLevel_#t~ret51#1; 4961#L933-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 4962#L933-5 isHighWaterLevel_~retValue_acc~10#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~10#1; 4858#L939-1 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 4859#L809-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 4884#L797-2 assume { :end_inline_processEnvironment__wrappee__base } true; 4885#L805-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 4896#L831-1 assume { :end_inline_processEnvironment } true; 4897#L780-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret29#1, __utac_acc__Specification5_spec__3_#t~ret30#1, __utac_acc__Specification5_spec__3_~tmp~4#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~4#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 4908#L662 __utac_acc__Specification5_spec__3_#t~ret29#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~4#1 := __utac_acc__Specification5_spec__3_#t~ret29#1;havoc __utac_acc__Specification5_spec__3_#t~ret29#1; 4909#L560 assume 2 != __utac_acc__Specification5_spec__3_~tmp~4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~9#1;havoc isPumpRunning_~retValue_acc~9#1;isPumpRunning_~retValue_acc~9#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~9#1; 4942#L884-1 __utac_acc__Specification5_spec__3_#t~ret30#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;__utac_acc__Specification5_spec__3_~tmp___0~0#1 := __utac_acc__Specification5_spec__3_#t~ret30#1;havoc __utac_acc__Specification5_spec__3_#t~ret30#1; 4943#L564 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0#1); 4994#L560-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 4944#L790 assume { :end_inline_timeShift } true; 4919#L702-2 [2021-12-14 23:40:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 6 times [2021-12-14 23:40:11,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287165477] [2021-12-14 23:40:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,438 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:11,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1129442222, now seen corresponding path program 1 times [2021-12-14 23:40:11,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594037709] [2021-12-14 23:40:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,448 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1725999767, now seen corresponding path program 1 times [2021-12-14 23:40:11,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997535939] [2021-12-14 23:40:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:11,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,455 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:11,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:13,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:40:13 BoogieIcfgContainer [2021-12-14 23:40:13,946 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:40:13,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:40:13,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:40:13,947 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:40:13,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:09" (3/4) ... [2021-12-14 23:40:13,949 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:40:13,994 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:40:13,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:40:13,995 INFO L158 Benchmark]: Toolchain (without parser) took 5021.10ms. Allocated memory was 86.0MB in the beginning and 182.5MB in the end (delta: 96.5MB). Free memory was 51.4MB in the beginning and 64.2MB in the end (delta: -12.8MB). Peak memory consumption was 83.6MB. Max. memory is 16.1GB. [2021-12-14 23:40:13,996 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 58.3MB in the beginning and 58.2MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:40:13,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.62ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 51.2MB in the beginning and 94.4MB in the end (delta: -43.3MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-12-14 23:40:13,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.93ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 91.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:40:13,996 INFO L158 Benchmark]: Boogie Preprocessor took 42.61ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 88.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:40:13,997 INFO L158 Benchmark]: RCFGBuilder took 449.80ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 66.4MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-14 23:40:13,998 INFO L158 Benchmark]: BuchiAutomizer took 4032.17ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 66.4MB in the beginning and 67.3MB in the end (delta: -964.2kB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. [2021-12-14 23:40:14,000 INFO L158 Benchmark]: Witness Printer took 48.17ms. Allocated memory is still 182.5MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:40:14,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 58.3MB in the beginning and 58.2MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.62ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 51.2MB in the beginning and 94.4MB in the end (delta: -43.3MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.93ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 91.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.61ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 88.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.80ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 66.4MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 4032.17ms. Allocated memory was 125.8MB in the beginning and 182.5MB in the end (delta: 56.6MB). Free memory was 66.4MB in the beginning and 67.3MB in the end (delta: -964.2kB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. * Witness Printer took 48.17ms. Allocated memory is still 182.5MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 565 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1721 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 565 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3366 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3366 mSDsluCounter, 4958 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3450 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 334 IncrementalHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 1508 mSDtfsCounter, 334 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 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: 702]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, retValue_acc=0, NULL=0, head=0, tmp___0=0, pumpRunning=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@780ced9a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79295659=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f172278=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e5a8f2e=0, retValue_acc=1, tmp=0, methaneLevelCritical=0, retValue_acc=0, retValue_acc=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56d7849=29, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20d051b1=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5205417c=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2394fd2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c91dbca=0, tmp=1, tmp___2=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c6f0e78=0, \result=0, tmp=1, cleanupTimeShifts=4, switchedOnBeforeTS=0, \result=0, tmp___0=0, head=0, \result=1, tmp___1=0, retValue_acc=1, NULL=0, waterLevel=1, systemActive=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@cb3ef16=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 702]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L533] int switchedOnBeforeTS ; [L587] int waterLevel = 1; [L588] int methaneLevelCritical = 0; [L763] int pumpRunning = 0; [L764] int systemActive = 1; [L499] int retValue_acc ; [L500] int tmp ; [L504] FCALL select_helpers() [L505] FCALL select_features() [L506] CALL, EXPR valid_product() [L1012] int retValue_acc ; [L1015] retValue_acc = 1 [L1016] return (retValue_acc); [L506] RET, EXPR valid_product() [L506] tmp = valid_product() [L508] COND TRUE \read(tmp) [L510] FCALL setup() [L511] CALL runTest() [L489] CALL __utac_acc__Specification5_spec__1() [L538] switchedOnBeforeTS = 0 [L489] RET __utac_acc__Specification5_spec__1() [L490] CALL test() [L693] int splverifierCounter ; [L694] int tmp ; [L695] int tmp___0 ; [L696] int tmp___1 ; [L697] int tmp___2 ; [L700] splverifierCounter = 0 Loop: [L702] COND TRUE 1 [L704] COND TRUE splverifierCounter < 4 [L710] tmp = __VERIFIER_nondet_int() [L712] COND FALSE !(\read(tmp)) [L720] tmp___0 = __VERIFIER_nondet_int() [L722] COND FALSE !(\read(tmp___0)) [L730] tmp___2 = __VERIFIER_nondet_int() [L732] COND TRUE \read(tmp___2) [L734] CALL startSystem() [L981] systemActive = 1 [L734] RET startSystem() [L749] CALL timeShift() [L771] CALL __utac_acc__Specification5_spec__2() [L547] CALL, EXPR isPumpRunning() [L880] int retValue_acc ; [L883] retValue_acc = pumpRunning [L884] return (retValue_acc); [L547] RET, EXPR isPumpRunning() [L547] switchedOnBeforeTS = isPumpRunning() [L771] RET __utac_acc__Specification5_spec__2() [L773] COND FALSE !(\read(pumpRunning)) [L780] COND TRUE \read(systemActive) [L782] CALL processEnvironment() [L828] int tmp ; [L831] COND FALSE !(\read(pumpRunning)) [L846] CALL processEnvironment__wrappee__highWaterSensor() [L802] int tmp ; [L805] COND TRUE ! pumpRunning [L807] CALL, EXPR isHighWaterLevel() [L925] int retValue_acc ; [L926] int tmp ; [L927] int tmp___0 ; [L931] CALL, EXPR isHighWaterSensorDry() [L667] int retValue_acc ; [L670] COND TRUE waterLevel < 2 [L671] retValue_acc = 1 [L672] return (retValue_acc); [L931] RET, EXPR isHighWaterSensorDry() [L931] tmp = isHighWaterSensorDry() [L933] COND TRUE \read(tmp) [L934] tmp___0 = 0 [L938] retValue_acc = tmp___0 [L939] return (retValue_acc); [L807] RET, EXPR isHighWaterLevel() [L807] tmp = isHighWaterLevel() [L809] COND FALSE !(\read(tmp)) [L815] FCALL processEnvironment__wrappee__base() [L846] RET processEnvironment__wrappee__highWaterSensor() [L782] RET processEnvironment() [L788] CALL __utac_acc__Specification5_spec__3() [L553] int tmp ; [L554] int tmp___0 ; [L558] CALL, EXPR getWaterLevel() [L658] int retValue_acc ; [L661] retValue_acc = waterLevel [L662] return (retValue_acc); [L558] RET, EXPR getWaterLevel() [L558] tmp = getWaterLevel() [L560] COND TRUE tmp != 2 [L562] CALL, EXPR isPumpRunning() [L880] int retValue_acc ; [L883] retValue_acc = pumpRunning [L884] return (retValue_acc); [L562] RET, EXPR isPumpRunning() [L562] tmp___0 = isPumpRunning() [L564] COND FALSE !(\read(tmp___0)) [L788] RET __utac_acc__Specification5_spec__3() [L749] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:40:14,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)