./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product58.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 aa2e4c647ac78678e11a6f8d79cd56fa06ee0dfe ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:26:32,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:26:32,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:26:32,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:26:32,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:26:32,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:26:32,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:26:32,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:26:32,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:26:32,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:26:32,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:26:32,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:26:32,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:26:32,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:26:32,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:26:32,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:26:32,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:26:32,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:26:32,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:26:32,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:26:32,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:26:32,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:26:32,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:26:32,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:26:32,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:26:32,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:26:32,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:26:32,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:26:32,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:26:32,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:26:32,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:26:32,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:26:32,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:26:32,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:26:32,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:26:32,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:26:32,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:26:32,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:26:32,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:26:32,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:26:32,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:26:32,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:26:32,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:26:32,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:26:32,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:26:32,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:26:32,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:26:32,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:26:32,534 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:26:32,534 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:26:32,534 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:26:32,534 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:26:32,535 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:26:32,535 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:26:32,535 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:26:32,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:26:32,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:26:32,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:26:32,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:26:32,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:26:32,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:26:32,537 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:26:32,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:26:32,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:26:32,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:26:32,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:26:32,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:26:32,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:26:32,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:26:32,540 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:26:32,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa2e4c647ac78678e11a6f8d79cd56fa06ee0dfe [2021-08-27 16:26:32,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:26:32,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:26:32,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:26:32,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:26:32,858 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:26:32,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2021-08-27 16:26:32,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212082ca2/9ae03d81d74e42bdbb2cb630507a147f/FLAG01b7fa380 [2021-08-27 16:26:33,350 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:26:33,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2021-08-27 16:26:33,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212082ca2/9ae03d81d74e42bdbb2cb630507a147f/FLAG01b7fa380 [2021-08-27 16:26:33,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212082ca2/9ae03d81d74e42bdbb2cb630507a147f [2021-08-27 16:26:33,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:26:33,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:26:33,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:33,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:26:33,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:26:33,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:33" (1/1) ... [2021-08-27 16:26:33,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af73b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:33, skipping insertion in model container [2021-08-27 16:26:33,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:33" (1/1) ... [2021-08-27 16:26:33,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:26:33,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:26:33,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14611,14624] [2021-08-27 16:26:34,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:34,027 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:26:34,096 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14611,14624] [2021-08-27 16:26:34,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:34,136 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:26:34,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34 WrapperNode [2021-08-27 16:26:34,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:34,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:34,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:26:34,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:26:34,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:34,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:26:34,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:26:34,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:26:34,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:26:34,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:26:34,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:26:34,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:26:34,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (1/1) ... [2021-08-27 16:26:34,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:26:34,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:26:34,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:26:34,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:26:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:26:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:26:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:26:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:26:35,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:26:35,122 INFO L299 CfgBuilder]: Removed 208 assume(true) statements. [2021-08-27 16:26:35,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35 BoogieIcfgContainer [2021-08-27 16:26:35,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:26:35,125 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:26:35,125 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:26:35,127 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:26:35,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:26:33" (1/3) ... [2021-08-27 16:26:35,129 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@267ec847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:35, skipping insertion in model container [2021-08-27 16:26:35,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:34" (2/3) ... [2021-08-27 16:26:35,130 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@267ec847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:35, skipping insertion in model container [2021-08-27 16:26:35,130 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:35,130 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35" (3/3) ... [2021-08-27 16:26:35,131 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2021-08-27 16:26:35,159 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:26:35,160 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:26:35,160 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:26:35,160 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:26:35,160 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:26:35,160 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:26:35,160 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:26:35,160 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:26:35,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-08-27 16:26:35,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,199 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,199 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:26:35,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,206 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 91 [2021-08-27 16:26:35,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,208 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,211 INFO L791 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 42#L-1true havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 107#L1000true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 101#L1008true main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 27#L659true assume 0 != main_~tmp~4; 72#L631true ~switchedOnBeforeTS~0 := 0; 12#L161true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 141#L182-1true [2021-08-27 16:26:35,212 INFO L793 eck$LassoCheckResult]: Loop: 141#L182-1true assume !false; 92#L694true assume test_~splverifierCounter~0 < 4; 136#L695true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 11#L703true assume !(0 != test_~tmp~5); 49#L703-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 111#L713true assume !(0 != test_~tmp___0~1); 83#L713-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 138#L723true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4#L731-2true havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 69#L891true __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 122#L171true assume !(0 != ~pumpRunning~0); 93#L762true assume !(0 != ~systemActive~0); 48#L769true havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 90#L125true __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 116#L182true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 141#L182-1true [2021-08-27 16:26:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:26:35,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991827666] [2021-08-27 16:26:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,384 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,467 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1013869901, now seen corresponding path program 1 times [2021-08-27 16:26:35,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582963446] [2021-08-27 16:26:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:35,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:35,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582963446] [2021-08-27 16:26:35,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582963446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:35,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:35,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:35,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425348213] [2021-08-27 16:26:35,527 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:35,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:35,544 INFO L87 Difference]: Start difference. First operand has 141 states, 140 states have (on average 1.5) internal successors, (210), 140 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:35,597 INFO L93 Difference]: Finished difference Result 141 states and 200 transitions. [2021-08-27 16:26:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:35,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 200 transitions. [2021-08-27 16:26:35,604 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:26:35,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 134 states and 192 transitions. [2021-08-27 16:26:35,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-08-27 16:26:35,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-08-27 16:26:35,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 192 transitions. [2021-08-27 16:26:35,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:35,618 INFO L681 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-08-27 16:26:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 192 transitions. [2021-08-27 16:26:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-08-27 16:26:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4328358208955223) internal successors, (192), 133 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2021-08-27 16:26:35,655 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-08-27 16:26:35,655 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-08-27 16:26:35,656 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:26:35,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 192 transitions. [2021-08-27 16:26:35,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:26:35,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,664 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,665 INFO L791 eck$LassoCheckResult]: Stem: 423#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 358#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 359#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 416#L1008 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 333#L659 assume 0 != main_~tmp~4; 334#L631 ~switchedOnBeforeTS~0 := 0; 306#L161 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 307#L182-1 [2021-08-27 16:26:35,666 INFO L793 eck$LassoCheckResult]: Loop: 307#L182-1 assume !false; 410#L694 assume test_~splverifierCounter~0 < 4; 411#L695 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 303#L703 assume !(0 != test_~tmp~5); 305#L703-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 368#L713 assume !(0 != test_~tmp___0~1); 299#L713-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 404#L723 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 291#L731-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 292#L891 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 390#L171 assume !(0 != ~pumpRunning~0); 392#L762 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 338#L820 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 339#L794-1 assume !(0 == ~pumpRunning~0); 364#L769 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 365#L125 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 409#L182 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 307#L182-1 [2021-08-27 16:26:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:26:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764449018] [2021-08-27 16:26:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,762 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:35,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:35,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash 385675286, now seen corresponding path program 1 times [2021-08-27 16:26:35,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804752923] [2021-08-27 16:26:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:35,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:35,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804752923] [2021-08-27 16:26:35,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804752923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:35,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:35,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:35,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979784917] [2021-08-27 16:26:35,889 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:35,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:35,899 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:35,969 INFO L93 Difference]: Finished difference Result 183 states and 251 transitions. [2021-08-27 16:26:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:35,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 251 transitions. [2021-08-27 16:26:35,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:26:35,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 183 states and 251 transitions. [2021-08-27 16:26:35,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2021-08-27 16:26:35,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-08-27 16:26:35,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 251 transitions. [2021-08-27 16:26:35,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:35,976 INFO L681 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-08-27 16:26:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 251 transitions. [2021-08-27 16:26:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-08-27 16:26:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 183 states have (on average 1.3715846994535519) internal successors, (251), 182 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2021-08-27 16:26:35,982 INFO L704 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-08-27 16:26:35,983 INFO L587 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2021-08-27 16:26:35,983 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:26:35,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 251 transitions. [2021-08-27 16:26:35,984 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:26:35,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:35,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:35,985 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,985 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:35,985 INFO L791 eck$LassoCheckResult]: Stem: 752#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 681#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 682#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 742#L1008 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 661#L659 assume 0 != main_~tmp~4; 662#L631 ~switchedOnBeforeTS~0 := 0; 629#L161 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 630#L182-1 [2021-08-27 16:26:35,986 INFO L793 eck$LassoCheckResult]: Loop: 630#L182-1 assume !false; 735#L694 assume test_~splverifierCounter~0 < 4; 736#L695 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 626#L703 assume !(0 != test_~tmp~5); 628#L703-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 690#L713 assume !(0 != test_~tmp___0~1); 622#L713-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 729#L723 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 614#L731-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 615#L891 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 714#L171 assume !(0 != ~pumpRunning~0); 738#L762 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 659#L820 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 660#L794-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 696#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 671#L138-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 672#L940-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 693#L940-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 713#L946-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 728#L798-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 688#L769 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 689#L125 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 734#L182 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 630#L182-1 [2021-08-27 16:26:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:26:35,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:35,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084153330] [2021-08-27 16:26:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:35,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,018 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,091 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1093023170, now seen corresponding path program 1 times [2021-08-27 16:26:36,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522143247] [2021-08-27 16:26:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:26:36,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:36,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522143247] [2021-08-27 16:26:36,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522143247] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:36,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:26:36,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852783960] [2021-08-27 16:26:36,139 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:36,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:26:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:26:36,140 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:36,370 INFO L93 Difference]: Finished difference Result 517 states and 697 transitions. [2021-08-27 16:26:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:36,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 697 transitions. [2021-08-27 16:26:36,382 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2021-08-27 16:26:36,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 517 states and 697 transitions. [2021-08-27 16:26:36,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 517 [2021-08-27 16:26:36,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 517 [2021-08-27 16:26:36,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 517 states and 697 transitions. [2021-08-27 16:26:36,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:36,388 INFO L681 BuchiCegarLoop]: Abstraction has 517 states and 697 transitions. [2021-08-27 16:26:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states and 697 transitions. [2021-08-27 16:26:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 359. [2021-08-27 16:26:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 359 states have (on average 1.33983286908078) internal successors, (481), 358 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:26:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2021-08-27 16:26:36,407 INFO L704 BuchiCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-08-27 16:26:36,408 INFO L587 BuchiCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-08-27 16:26:36,408 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:26:36,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 481 transitions. [2021-08-27 16:26:36,410 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 252 [2021-08-27 16:26:36,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:36,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:36,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:36,412 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] [2021-08-27 16:26:36,412 INFO L791 eck$LassoCheckResult]: Stem: 1471#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(13);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(80, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(117, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(109, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(112, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(110, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(102, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 3 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(32, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1397#L-1 havoc main_#res;havoc main_#t~ret55, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 1398#L1000 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1460#L1008 main_#t~ret55 := valid_product_#res;main_~tmp~4 := main_#t~ret55;havoc main_#t~ret55; 1375#L659 assume 0 != main_~tmp~4; 1376#L631 ~switchedOnBeforeTS~0 := 0; 1345#L161 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1346#L182-1 [2021-08-27 16:26:36,412 INFO L793 eck$LassoCheckResult]: Loop: 1346#L182-1 assume !false; 1455#L694 assume test_~splverifierCounter~0 < 4; 1456#L695 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 1342#L703 assume !(0 != test_~tmp~5); 1344#L703-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 1408#L713 assume !(0 != test_~tmp___0~1); 1338#L713-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 1447#L723 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1330#L731-2 havoc __utac_acc__Specification5_spec__2_#t~ret17;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 1331#L891 __utac_acc__Specification5_spec__2_#t~ret17 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret17;havoc __utac_acc__Specification5_spec__2_#t~ret17; 1430#L171 assume !(0 != ~pumpRunning~0); 1453#L762 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret61, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1373#L820 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1374#L794-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret80, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1411#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1429#L138-1 isHighWaterLevel_#t~ret80 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret80;havoc isHighWaterLevel_#t~ret80; 1601#L940-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1599#L940-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 1597#L946-1 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 1595#L798-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1403#L769 havoc __utac_acc__Specification5_spec__3_#t~ret18, __utac_acc__Specification5_spec__3_#t~ret19, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1404#L125 __utac_acc__Specification5_spec__3_#t~ret18 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret18;havoc __utac_acc__Specification5_spec__3_#t~ret18; 1452#L182 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 1400#L891-1 __utac_acc__Specification5_spec__3_#t~ret19 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret19;havoc __utac_acc__Specification5_spec__3_#t~ret19; 1401#L186 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1346#L182-1 [2021-08-27 16:26:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:26:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185148647] [2021-08-27 16:26:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,461 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1871732579, now seen corresponding path program 1 times [2021-08-27 16:26:36,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482181981] [2021-08-27 16:26:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,507 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1935158761, now seen corresponding path program 1 times [2021-08-27 16:26:36,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:36,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059502655] [2021-08-27 16:26:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:36,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,542 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:36,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:17,082 WARN L207 SmtUtils]: Spent 40.11 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:27:58,417 WARN L207 SmtUtils]: Spent 19.84 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:27:58,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:27:58 BoogieIcfgContainer [2021-08-27 16:27:58,502 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:27:58,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:27:58,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:27:58,504 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:27:58,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:35" (3/4) ... [2021-08-27 16:27:58,507 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:27:58,546 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:27:58,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:27:58,548 INFO L168 Benchmark]: Toolchain (without parser) took 84846.54 ms. Allocated memory was 54.5 MB in the beginning and 104.9 MB in the end (delta: 50.3 MB). Free memory was 31.7 MB in the beginning and 40.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,548 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:27:58,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.63 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.38 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 25.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,549 INFO L168 Benchmark]: Boogie Preprocessor took 74.24 ms. Allocated memory is still 54.5 MB. Free memory was 25.8 MB in the beginning and 23.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,550 INFO L168 Benchmark]: RCFGBuilder took 821.03 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.1 MB in the beginning and 40.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,551 INFO L168 Benchmark]: BuchiAutomizer took 83377.58 ms. Allocated memory was 67.1 MB in the beginning and 104.9 MB in the end (delta: 37.7 MB). Free memory was 40.1 MB in the beginning and 42.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,551 INFO L168 Benchmark]: Witness Printer took 43.78 ms. Allocated memory is still 104.9 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:58,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.63 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.38 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 25.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.24 ms. Allocated memory is still 54.5 MB. Free memory was 25.8 MB in the beginning and 23.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 821.03 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.1 MB in the beginning and 40.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83377.58 ms. Allocated memory was 67.1 MB in the beginning and 104.9 MB in the end (delta: 37.7 MB). Free memory was 40.1 MB in the beginning and 42.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.1 GB. * Witness Printer took 43.78 ms. Allocated memory is still 104.9 MB. Free memory was 42.2 MB in the beginning and 40.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 359 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 82.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 53.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 158 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 359 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 655 SDtfs, 971 SDslu, 714 SDs, 0 SdLazy, 137 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 208.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 693]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26080} State at position 1 is {NULL=0, NULL=26084, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f82c37b=0, NULL=26080, NULL=26096, NULL=0, NULL=0, NULL=26091, retValue_acc=1, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41e615ac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3caaf060=0, tmp=0, NULL=0, tmp___1=0, NULL=0, NULL=26092, cleanupTimeShifts=4, NULL=26105, NULL=26086, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, \result=1, NULL=0, NULL=0, NULL=0, NULL=26099, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=26093, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@854c521=0, tmp=0, NULL=0, NULL=26104, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a48a728=0, NULL=0, NULL=0, retValue_acc=0, NULL=26090, NULL=0, NULL=26085, tmp___0=0, NULL=0, NULL=0, NULL=26100, tmp=1, NULL=0, NULL=0, switchedOnBeforeTS=0, NULL=26108, tmp=0, \result=0, NULL=0, systemActive=1, NULL=26101, \result=1, NULL=0, NULL=26087, \result=0, NULL=0, NULL=26103, NULL=0, NULL=0, NULL=26081, tmp___0=0, NULL=26106, \result=0, NULL=26097, NULL=0, NULL=0, NULL=26102, NULL=26107, NULL=26089, NULL=26082, tmp___2=70, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2466b803=0, NULL=26083, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b4356a0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@345f69eb=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bd9af6d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78081c97=0, NULL=26088, NULL=26094, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24a02bbf=0, NULL=0, NULL=26095, NULL=26098} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L155] int switchedOnBeforeTS ; [L373] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L570] int cleanupTimeShifts = 4; [L752] int pumpRunning = 0; [L753] int systemActive = 1; [L650] int retValue_acc ; [L651] int tmp ; [L1004] int retValue_acc ; [L1007] retValue_acc = 1 [L1008] return (retValue_acc); [L657] tmp = valid_product() [L659] COND TRUE \read(tmp) [L160] switchedOnBeforeTS = 0 [L684] int splverifierCounter ; [L685] int tmp ; [L686] int tmp___0 ; [L687] int tmp___1 ; [L688] int tmp___2 ; [L691] splverifierCounter = 0 Loop: [L693] COND TRUE 1 [L695] COND TRUE splverifierCounter < 4 [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND TRUE \read(tmp___2) [L973] systemActive = 1 [L887] int retValue_acc ; [L890] retValue_acc = pumpRunning [L891] return (retValue_acc); [L169] switchedOnBeforeTS = isPumpRunning() [L762] COND FALSE !(\read(pumpRunning)) [L769] COND TRUE \read(systemActive) [L817] int tmp ; [L820] COND FALSE !(\read(pumpRunning)) [L791] int tmp ; [L794] COND TRUE ! pumpRunning [L932] int retValue_acc ; [L933] int tmp ; [L934] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L938] tmp = isHighWaterSensorDry() [L940] COND TRUE \read(tmp) [L941] tmp___0 = 0 [L945] retValue_acc = tmp___0 [L946] return (retValue_acc); [L796] tmp = isHighWaterLevel() [L798] COND FALSE !(\read(tmp)) [L175] int tmp ; [L176] int tmp___0 ; [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L180] tmp = getWaterLevel() [L182] COND TRUE tmp != 2 [L887] int retValue_acc ; [L890] retValue_acc = pumpRunning [L891] return (retValue_acc); [L184] tmp___0 = isPumpRunning() [L186] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:27:58,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...