./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_product24.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 4d600d6e5a0c8c7440a2a4227260a3dd4c984758 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:34:05,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:34:05,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:34:05,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:34:05,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:34:05,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:34:05,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:34:05,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:34:05,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:34:05,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:34:05,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:34:05,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:34:05,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:34:05,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:34:05,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:34:05,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:34:05,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:34:05,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:34:05,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:34:05,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:34:05,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:34:05,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:34:05,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:34:05,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:34:05,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:34:05,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:34:05,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:34:05,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:34:05,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:34:05,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:34:05,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:34:05,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:34:05,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:34:05,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:34:05,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:34:05,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:34:05,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:34:05,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:34:05,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:34:05,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:34:05,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:34:05,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:34:05,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:34:05,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:34:05,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:34:05,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:34:05,515 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:34:05,515 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:34:05,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:34:05,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:34:05,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:34:05,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:34:05,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:34:05,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:34:05,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:34:05,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:34:05,519 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:34:05,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d600d6e5a0c8c7440a2a4227260a3dd4c984758 [2021-07-06 20:34:05,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:34:05,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:34:05,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:34:05,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:34:05,837 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:34:05,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product24.cil.c [2021-07-06 20:34:05,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f459d08/67c2522d41e24c5788ff4371dd69dfd0/FLAG97d98bc45 [2021-07-06 20:34:06,267 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:34:06,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product24.cil.c [2021-07-06 20:34:06,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f459d08/67c2522d41e24c5788ff4371dd69dfd0/FLAG97d98bc45 [2021-07-06 20:34:06,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f459d08/67c2522d41e24c5788ff4371dd69dfd0 [2021-07-06 20:34:06,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:34:06,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:34:06,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:34:06,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:34:06,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:34:06,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:06,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fab10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06, skipping insertion in model container [2021-07-06 20:34:06,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:06,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:34:06,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:34:06,866 WARN L224 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_product24.cil.c[18422,18435] [2021-07-06 20:34:06,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:34:06,873 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:34:06,968 WARN L224 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_product24.cil.c[18422,18435] [2021-07-06 20:34:06,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:34:06,993 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:34:06,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06 WrapperNode [2021-07-06 20:34:06,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:34:06,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:34:06,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:34:06,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:34:06,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:34:07,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:34:07,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:34:07,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:34:07,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:34:07,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:34:07,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:34:07,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:34:07,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (1/1) ... [2021-07-06 20:34:07,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:34:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:34:07,102 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) [2021-07-06 20:34:07,134 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 [2021-07-06 20:34:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:34:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:34:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:34:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:34:07,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:34:07,780 INFO L299 CfgBuilder]: Removed 176 assume(true) statements. [2021-07-06 20:34:07,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:07 BoogieIcfgContainer [2021-07-06 20:34:07,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:34:07,782 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:34:07,782 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:34:07,784 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:34:07,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:07,785 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:34:06" (1/3) ... [2021-07-06 20:34:07,785 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b99aebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:34:07, skipping insertion in model container [2021-07-06 20:34:07,785 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:07,785 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:34:06" (2/3) ... [2021-07-06 20:34:07,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b99aebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:34:07, skipping insertion in model container [2021-07-06 20:34:07,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:34:07,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:07" (3/3) ... [2021-07-06 20:34:07,787 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product24.cil.c [2021-07-06 20:34:07,812 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:34:07,812 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:34:07,812 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:34:07,812 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:34:07,812 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:34:07,812 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:34:07,812 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:34:07,813 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:34:07,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 113 states, 112 states have (on average 1.5) internal successors, (168), 112 states have internal predecessors, (168), 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) [2021-07-06 20:34:07,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:34:07,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:07,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:07,842 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:07,842 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:07,842 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:34:07,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 113 states, 112 states have (on average 1.5) internal successors, (168), 112 states have internal predecessors, (168), 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) [2021-07-06 20:34:07,847 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:34:07,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:07,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:07,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:07,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:07,851 INFO L791 eck$LassoCheckResult]: Stem: 81#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 3#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 77#L264true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 93#L272true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 111#L134true assume 0 != main_~tmp~0; 33#L105true ~switchedOnBeforeTS~0 := 0; 95#L930true havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 15#L951-1true [2021-07-06 20:34:07,851 INFO L793 eck$LassoCheckResult]: Loop: 15#L951-1true assume !false; 26#L499true assume test_~splverifierCounter~0 < 4; 114#L500true test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 7#L508true assume !(0 != test_~tmp~4); 8#L508-1true test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 43#L518true assume !(0 != test_~tmp___0~1); 46#L518-1true test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 105#L528true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 112#L536-1true havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 54#L405true __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 13#L940true assume !(0 != ~pumpRunning~0); 94#L294true assume !(0 != ~systemActive~0); 30#L301true havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~8, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~8;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 107#L228true __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~8 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 12#L951true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~8); 15#L951-1true [2021-07-06 20:34:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:34:07,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:07,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741624812] [2021-07-06 20:34:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:07,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:07,982 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,034 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,057 INFO L82 PathProgramCache]: Analyzing trace with hash 676518966, now seen corresponding path program 1 times [2021-07-06 20:34:08,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691829260] [2021-07-06 20:34:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:34:08,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:08,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:08,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:34:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:34:08,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:34:08,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691829260] [2021-07-06 20:34:08,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691829260] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:34:08,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:34:08,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:34:08,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512631109] [2021-07-06 20:34:08,097 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:34:08,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:34:08,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:34:08,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:34:08,115 INFO L87 Difference]: Start difference. First operand has 113 states, 112 states have (on average 1.5) internal successors, (168), 112 states have internal predecessors, (168), 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) [2021-07-06 20:34:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:34:08,188 INFO L93 Difference]: Finished difference Result 219 states and 311 transitions. [2021-07-06 20:34:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:34:08,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 219 states and 311 transitions. [2021-07-06 20:34:08,198 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-07-06 20:34:08,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 219 states to 205 states and 296 transitions. [2021-07-06 20:34:08,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2021-07-06 20:34:08,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 205 [2021-07-06 20:34:08,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 296 transitions. [2021-07-06 20:34:08,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:34:08,209 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 296 transitions. [2021-07-06 20:34:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 296 transitions. [2021-07-06 20:34:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-07-06 20:34:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 203 states have (on average 1.4433497536945812) internal successors, (293), 202 states have internal predecessors, (293), 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) [2021-07-06 20:34:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 293 transitions. [2021-07-06 20:34:08,246 INFO L704 BuchiCegarLoop]: Abstraction has 203 states and 293 transitions. [2021-07-06 20:34:08,246 INFO L587 BuchiCegarLoop]: Abstraction has 203 states and 293 transitions. [2021-07-06 20:34:08,246 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:34:08,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 203 states and 293 transitions. [2021-07-06 20:34:08,249 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 140 [2021-07-06 20:34:08,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:08,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:08,251 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:08,251 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:08,251 INFO L791 eck$LassoCheckResult]: Stem: 458#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 341#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 342#L264 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 456#L272 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 464#L134 assume 0 != main_~tmp~0; 398#L105 ~switchedOnBeforeTS~0 := 0; 399#L930 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 467#L951-1 [2021-07-06 20:34:08,252 INFO L793 eck$LassoCheckResult]: Loop: 467#L951-1 assume !false; 512#L499 assume test_~splverifierCounter~0 < 4; 513#L500 test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 543#L508 assume !(0 != test_~tmp~4); 541#L508-1 test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 540#L518 assume !(0 != test_~tmp___0~1); 538#L518-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 537#L528 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 473#L536-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 431#L405 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 363#L940 assume !(0 != ~pumpRunning~0); 364#L294 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret20, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 525#L352 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret19, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 521#L326-1 assume !(0 != ~pumpRunning~0); 519#L301 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~8, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~8;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 518#L228 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~8 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 516#L951 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~8); 467#L951-1 [2021-07-06 20:34:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:34:08,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112094856] [2021-07-06 20:34:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,312 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,363 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,385 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,387 INFO L82 PathProgramCache]: Analyzing trace with hash -554713784, now seen corresponding path program 1 times [2021-07-06 20:34:08,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59160841] [2021-07-06 20:34:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,394 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,400 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,402 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1677326142, now seen corresponding path program 1 times [2021-07-06 20:34:08,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752666792] [2021-07-06 20:34:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:34:08,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:08,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:08,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:34:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:34:08,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:34:08,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752666792] [2021-07-06 20:34:08,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752666792] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:34:08,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:34:08,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:34:08,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120117417] [2021-07-06 20:34:08,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-06 20:34:08,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:34:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:34:08,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:34:08,589 INFO L87 Difference]: Start difference. First operand 203 states and 293 transitions. cyclomatic complexity: 93 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:34:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:34:08,704 INFO L93 Difference]: Finished difference Result 608 states and 873 transitions. [2021-07-06 20:34:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:34:08,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 608 states and 873 transitions. [2021-07-06 20:34:08,708 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 274 [2021-07-06 20:34:08,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 608 states to 608 states and 873 transitions. [2021-07-06 20:34:08,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 608 [2021-07-06 20:34:08,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 608 [2021-07-06 20:34:08,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 608 states and 873 transitions. [2021-07-06 20:34:08,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:34:08,714 INFO L681 BuchiCegarLoop]: Abstraction has 608 states and 873 transitions. [2021-07-06 20:34:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states and 873 transitions. [2021-07-06 20:34:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 399. [2021-07-06 20:34:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 399 states have (on average 1.4160401002506267) internal successors, (565), 398 states have internal predecessors, (565), 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) [2021-07-06 20:34:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 565 transitions. [2021-07-06 20:34:08,724 INFO L704 BuchiCegarLoop]: Abstraction has 399 states and 565 transitions. [2021-07-06 20:34:08,724 INFO L587 BuchiCegarLoop]: Abstraction has 399 states and 565 transitions. [2021-07-06 20:34:08,724 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:34:08,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 399 states and 565 transitions. [2021-07-06 20:34:08,725 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 274 [2021-07-06 20:34:08,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:34:08,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:34:08,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:08,726 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:34:08,726 INFO L791 eck$LassoCheckResult]: Stem: 1283#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0; 1168#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1169#L264 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1281#L272 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1289#L134 assume 0 != main_~tmp~0; 1227#L105 ~switchedOnBeforeTS~0 := 0; 1228#L930 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1194#L951-1 [2021-07-06 20:34:08,727 INFO L793 eck$LassoCheckResult]: Loop: 1194#L951-1 assume !false; 1195#L499 assume test_~splverifierCounter~0 < 4; 1217#L500 test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 1308#L508 assume !(0 != test_~tmp~4); 1489#L508-1 test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 1488#L518 assume !(0 != test_~tmp___0~1); 1486#L518-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 1478#L528 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1451#L536-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1505#L405 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 1503#L940 assume !(0 != ~pumpRunning~0); 1499#L294 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret20, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1493#L352 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret19, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 1481#L326-1 assume !(0 != ~pumpRunning~0); 1477#L301 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~8, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~8;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 1476#L228 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~8 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1187#L951 assume 2 != __utac_acc__Specification5_spec__3_~tmp~8;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~7;havoc isPumpRunning_~retValue_acc~7;isPumpRunning_~retValue_acc~7 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~7; 1188#L405-1 __utac_acc__Specification5_spec__3_#t~ret80 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1287#L955 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 1194#L951-1 [2021-07-06 20:34:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:34:08,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382583205] [2021-07-06 20:34:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,747 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,779 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,784 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,785 INFO L82 PathProgramCache]: Analyzing trace with hash -504014109, now seen corresponding path program 1 times [2021-07-06 20:34:08,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226523159] [2021-07-06 20:34:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,789 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,790 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:34:08,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1297698851, now seen corresponding path program 1 times [2021-07-06 20:34:08,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:34:08,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488885105] [2021-07-06 20:34:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:34:08,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:34:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,818 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:34:08,868 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:34:08,876 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:34:08,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:08,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-07-06 20:34:52,636 WARN L205 SmtUtils]: Spent 43.63 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:34:52,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:34:52,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:35:14,787 WARN L205 SmtUtils]: Spent 22.11 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:35:14,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:35:14 BoogieIcfgContainer [2021-07-06 20:35:14,899 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:35:14,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:35:14,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:35:14,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:35:14,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:34:07" (3/4) ... [2021-07-06 20:35:14,922 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:35:14,978 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:35:14,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:35:14,982 INFO L168 Benchmark]: Toolchain (without parser) took 68320.02 ms. Allocated memory was 73.4 MB in the beginning and 134.2 MB in the end (delta: 60.8 MB). Free memory was 57.3 MB in the beginning and 58.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 59.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,982 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:35:14,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.29 ms. Allocated memory is still 73.4 MB. Free memory was 57.1 MB in the beginning and 50.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.94 ms. Allocated memory is still 73.4 MB. Free memory was 50.0 MB in the beginning and 46.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,983 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 73.4 MB. Free memory was 46.5 MB in the beginning and 43.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,984 INFO L168 Benchmark]: RCFGBuilder took 720.51 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 43.8 MB in the beginning and 81.9 MB in the end (delta: -38.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,984 INFO L168 Benchmark]: BuchiAutomizer took 67116.63 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 81.9 MB in the beginning and 61.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,985 INFO L168 Benchmark]: Witness Printer took 81.77 ms. Allocated memory is still 134.2 MB. Free memory was 61.7 MB in the beginning and 58.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:35:14,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.29 ms. Allocated memory is still 73.4 MB. Free memory was 57.1 MB in the beginning and 50.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.94 ms. Allocated memory is still 73.4 MB. Free memory was 50.0 MB in the beginning and 46.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 73.4 MB. Free memory was 46.5 MB in the beginning and 43.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 720.51 ms. Allocated memory was 73.4 MB in the beginning and 111.1 MB in the end (delta: 37.7 MB). Free memory was 43.8 MB in the beginning and 81.9 MB in the end (delta: -38.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 67116.63 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 81.9 MB in the beginning and 61.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. * Witness Printer took 81.77 ms. Allocated memory is still 134.2 MB. Free memory was 61.7 MB in the beginning and 58.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 399 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 67.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 66.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 36.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 211 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 399 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 411 SDtfs, 727 SDslu, 637 SDs, 0 SdLazy, 107 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 498]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12964} State at position 1 is {NULL=12976, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=12964, NULL=12989, NULL=0, NULL=12985, NULL=12991, NULL=12982, NULL=12987, methaneLevelCritical=0, tmp=0, NULL=12975, tmp=1, NULL=0, tmp=0, NULL=12968, NULL=0, tmp___1=0, NULL=12984, NULL=12965, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f20ef67=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b03e95b=0, switchedOnBeforeTS=0, NULL=12969, NULL=12972, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fdaf883=0, \result=0, NULL=12980, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ed49178=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d59bcb1=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b96ba95=0, NULL=0, systemActive=1, waterLevel=1, \result=1, retValue_acc=1, NULL=12977, \result=1, head=0, pumpRunning=0, tmp___0=0, tmp=1, \result=0, NULL=12967, NULL=12992, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1099a847=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7681a23=0, NULL=12971, NULL=0, retValue_acc=1, NULL=12990, NULL=0, NULL=0, NULL=12966, NULL=0, NULL=0, NULL=12983, tmp___2=74, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, NULL=12973, NULL=12979, NULL=12981, NULL=12988, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e82b926=0, NULL=12970, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cb36ade=0, NULL=0, NULL=0, NULL=12986, NULL=12978, retValue_acc=0, NULL=12974} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L153] int waterLevel = 1; [L154] int methaneLevelCritical = 0; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L726] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L924] int switchedOnBeforeTS ; [L125] int retValue_acc ; [L126] int tmp ; [L268] int retValue_acc ; [L271] retValue_acc = 1 [L272] return (retValue_acc); [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L929] switchedOnBeforeTS = 0 [L489] int splverifierCounter ; [L490] int tmp ; [L491] int tmp___0 ; [L492] int tmp___1 ; [L493] int tmp___2 ; [L496] splverifierCounter = 0 Loop: [L498] COND TRUE 1 [L500] COND TRUE splverifierCounter < 4 [L506] tmp = __VERIFIER_nondet_int() [L508] COND FALSE !(\read(tmp)) [L516] tmp___0 = __VERIFIER_nondet_int() [L518] COND FALSE !(\read(tmp___0)) [L526] tmp___2 = __VERIFIER_nondet_int() [L528] COND TRUE \read(tmp___2) [L483] systemActive = 1 [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L938] switchedOnBeforeTS = isPumpRunning() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L944] int tmp ; [L945] int tmp___0 ; [L224] int retValue_acc ; [L227] retValue_acc = waterLevel [L228] return (retValue_acc); [L949] tmp = getWaterLevel() [L951] COND TRUE tmp != 2 [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L953] tmp___0 = isPumpRunning() [L955] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:35:15,036 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...