./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product22.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_product22.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 55f9e12a1d6b423a02c0a8851f72b2ca97ddca88 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:22:30,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:22:30,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:22:30,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:22:30,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:22:30,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:22:30,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:22:30,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:22:31,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:22:31,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:22:31,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:22:31,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:22:31,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:22:31,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:22:31,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:22:31,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:22:31,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:22:31,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:22:31,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:22:31,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:22:31,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:22:31,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:22:31,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:22:31,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:22:31,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:22:31,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:22:31,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:22:31,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:22:31,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:22:31,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:22:31,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:22:31,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:22:31,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:22:31,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:22:31,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:22:31,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:22:31,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:22:31,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:22:31,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:22:31,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:22:31,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:22:31,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:22:31,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:22:31,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:22:31,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:22:31,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:22:31,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:22:31,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:22:31,099 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:22:31,099 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:22:31,100 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:22:31,100 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:22:31,101 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:22:31,101 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:22:31,101 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:22:31,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:22:31,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:22:31,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:22:31,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:22:31,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:22:31,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:22:31,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:22:31,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:22:31,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:22:31,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:22:31,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:22:31,104 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:22:31,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:22:31,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:22:31,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:22:31,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:22:31,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:22:31,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:22:31,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:22:31,106 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:22:31,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55f9e12a1d6b423a02c0a8851f72b2ca97ddca88 [2021-08-27 16:22:31,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:22:31,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:22:31,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:22:31,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:22:31,428 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:22:31,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product22.cil.c [2021-08-27 16:22:31,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ee48ece/34524d3fb699407091531099a3120828/FLAGc18bf58b5 [2021-08-27 16:22:31,967 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:22:31,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product22.cil.c [2021-08-27 16:22:31,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ee48ece/34524d3fb699407091531099a3120828/FLAGc18bf58b5 [2021-08-27 16:22:32,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2ee48ece/34524d3fb699407091531099a3120828 [2021-08-27 16:22:32,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:22:32,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:22:32,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:22:32,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:22:32,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:22:32,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:32,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e84da8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32, skipping insertion in model container [2021-08-27 16:22:32,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:32,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:22:32,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:22:32,833 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_product22.cil.c[18190,18203] [2021-08-27 16:22:32,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:22:32,842 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:22:32,908 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_product22.cil.c[18190,18203] [2021-08-27 16:22:32,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:22:32,934 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:22:32,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32 WrapperNode [2021-08-27 16:22:32,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:22:32,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:22:32,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:22:32,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:22:32,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:32,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:32,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:22:32,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:22:32,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:22:32,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:22:33,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:22:33,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:22:33,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:22:33,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:22:33,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (1/1) ... [2021-08-27 16:22:33,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:22:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:22:33,050 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 16:22:33,064 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 16:22:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:22:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:22:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:22:33,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:22:34,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:22:34,050 INFO L299 CfgBuilder]: Removed 172 assume(true) statements. [2021-08-27 16:22:34,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:34 BoogieIcfgContainer [2021-08-27 16:22:34,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:22:34,053 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:22:34,053 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:22:34,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:22:34,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:34,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:22:32" (1/3) ... [2021-08-27 16:22:34,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40f002c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:22:34, skipping insertion in model container [2021-08-27 16:22:34,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:34,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:22:32" (2/3) ... [2021-08-27 16:22:34,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40f002c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:22:34, skipping insertion in model container [2021-08-27 16:22:34,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:22:34,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:34" (3/3) ... [2021-08-27 16:22:34,061 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product22.cil.c [2021-08-27 16:22:34,108 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:22:34,108 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:22:34,109 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:22:34,109 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:22:34,109 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:22:34,109 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:22:34,109 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:22:34,109 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:22:34,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:22:34,160 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:22:34,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:34,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:34,168 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:34,168 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:34,169 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:22:34,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:22:34,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:22:34,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:34,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:34,184 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:34,184 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:34,195 INFO L791 eck$LassoCheckResult]: Stem: 104#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 37#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~5, main_~tmp~5;havoc main_~retValue_acc~5;havoc main_~tmp~5; 102#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 59#L75true main_#t~ret35 := valid_product_#res;main_~tmp~5 := main_#t~ret35;havoc main_#t~ret35; 86#L485true assume 0 != main_~tmp~5; 5#L461true ~switchedOnBeforeTS~0 := 0; 28#L289true havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 74#L310-1true [2021-08-27 16:22:34,196 INFO L793 eck$LassoCheckResult]: Loop: 74#L310-1true assume !false; 43#L346true assume test_~splverifierCounter~0 < 4; 98#L347true test_~tmp~4 := test_#t~nondet31;havoc test_#t~nondet31; 30#L355true assume !(0 != test_~tmp~4); 113#L355-1true test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 53#L365true assume !(0 != test_~tmp___0~2); 8#L365-1true test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 12#L375true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 20#L383-2true havoc __utac_acc__Specification5_spec__2_#t~ret28;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 110#L213true __utac_acc__Specification5_spec__2_#t~ret28 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28;havoc __utac_acc__Specification5_spec__2_#t~ret28; 34#L299true assume !(0 != ~pumpRunning~0); 44#L102true assume !(0 != ~systemActive~0); 97#L109true havoc __utac_acc__Specification5_spec__3_#t~ret29, __utac_acc__Specification5_spec__3_#t~ret30, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~1;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~1;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 82#L940true __utac_acc__Specification5_spec__3_#t~ret29 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret29;havoc __utac_acc__Specification5_spec__3_#t~ret29; 69#L310true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 74#L310-1true [2021-08-27 16:22:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:22:34,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:34,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008764040] [2021-08-27 16:22:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:34,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,414 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,571 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1012669325, now seen corresponding path program 1 times [2021-08-27 16:22:34,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:34,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794381610] [2021-08-27 16:22:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:34,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:22:34,656 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 16:22:34,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:22:34,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794381610] [2021-08-27 16:22:34,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794381610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:22:34,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:22:34,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:22:34,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112076795] [2021-08-27 16:22:34,666 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:22:34,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:22:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:22:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:22:34,686 INFO L87 Difference]: Start difference. First operand has 111 states, 110 states have (on average 1.5) internal successors, (165), 110 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 16:22:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:22:34,721 INFO L93 Difference]: Finished difference Result 111 states and 155 transitions. [2021-08-27 16:22:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:22:34,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 155 transitions. [2021-08-27 16:22:34,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:22:34,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 104 states and 147 transitions. [2021-08-27 16:22:34,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-08-27 16:22:34,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-08-27 16:22:34,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 147 transitions. [2021-08-27 16:22:34,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:22:34,740 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 147 transitions. [2021-08-27 16:22:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-27 16:22:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.4134615384615385) internal successors, (147), 103 states have internal predecessors, (147), 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 16:22:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2021-08-27 16:22:34,766 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:34,766 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:22:34,766 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:22:34,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 147 transitions. [2021-08-27 16:22:34,767 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:22:34,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:34,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:34,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:34,768 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 16:22:34,769 INFO L791 eck$LassoCheckResult]: Stem: 334#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 285#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~5, main_~tmp~5;havoc main_~retValue_acc~5;havoc main_~tmp~5; 286#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 315#L75 main_#t~ret35 := valid_product_#res;main_~tmp~5 := main_#t~ret35;havoc main_#t~ret35; 316#L485 assume 0 != main_~tmp~5; 233#L461 ~switchedOnBeforeTS~0 := 0; 234#L289 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 270#L310-1 [2021-08-27 16:22:34,769 INFO L793 eck$LassoCheckResult]: Loop: 270#L310-1 assume !false; 295#L346 assume test_~splverifierCounter~0 < 4; 296#L347 test_~tmp~4 := test_#t~nondet31;havoc test_#t~nondet31; 272#L355 assume !(0 != test_~tmp~4); 274#L355-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 308#L365 assume !(0 != test_~tmp___0~2); 239#L365-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 240#L375 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 248#L383-2 havoc __utac_acc__Specification5_spec__2_#t~ret28;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 261#L213 __utac_acc__Specification5_spec__2_#t~ret28 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28;havoc __utac_acc__Specification5_spec__2_#t~ret28; 278#L299 assume !(0 != ~pumpRunning~0); 279#L102 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 297#L160 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret8, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 300#L134-1 assume !(0 != ~pumpRunning~0); 276#L109 havoc __utac_acc__Specification5_spec__3_#t~ret29, __utac_acc__Specification5_spec__3_#t~ret30, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~1;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~1;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 330#L940 __utac_acc__Specification5_spec__3_#t~ret29 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret29;havoc __utac_acc__Specification5_spec__3_#t~ret29; 324#L310 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 270#L310-1 [2021-08-27 16:22:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:22:34,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:34,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410357875] [2021-08-27 16:22:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:34,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,820 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash 363233727, now seen corresponding path program 1 times [2021-08-27 16:22:34,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:34,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561574611] [2021-08-27 16:22:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:34,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,898 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:34,911 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -759378631, now seen corresponding path program 1 times [2021-08-27 16:22:34,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:34,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348856058] [2021-08-27 16:22:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:34,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:22:35,037 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 16:22:35,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:22:35,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348856058] [2021-08-27 16:22:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348856058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:22:35,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:22:35,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:22:35,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781788649] [2021-08-27 16:22:35,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:22:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:22:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:22:35,425 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. cyclomatic complexity: 45 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) [2021-08-27 16:22:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:22:35,674 INFO L93 Difference]: Finished difference Result 320 states and 453 transitions. [2021-08-27 16:22:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:22:35,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 453 transitions. [2021-08-27 16:22:35,679 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 135 [2021-08-27 16:22:35,681 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 320 states and 453 transitions. [2021-08-27 16:22:35,682 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 320 [2021-08-27 16:22:35,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 320 [2021-08-27 16:22:35,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 320 states and 453 transitions. [2021-08-27 16:22:35,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:22:35,684 INFO L681 BuchiCegarLoop]: Abstraction has 320 states and 453 transitions. [2021-08-27 16:22:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states and 453 transitions. [2021-08-27 16:22:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 201. [2021-08-27 16:22:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3930348258706469) internal successors, (280), 200 states have internal predecessors, (280), 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 16:22:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 280 transitions. [2021-08-27 16:22:35,696 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 280 transitions. [2021-08-27 16:22:35,696 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 280 transitions. [2021-08-27 16:22:35,696 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:22:35,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 280 transitions. [2021-08-27 16:22:35,697 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 135 [2021-08-27 16:22:35,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:22:35,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:22:35,701 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:22:35,702 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] [2021-08-27 16:22:35,702 INFO L791 eck$LassoCheckResult]: Stem: 790#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);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(110, #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(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(30);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(9);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 730#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~5, main_~tmp~5;havoc main_~retValue_acc~5;havoc main_~tmp~5; 731#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 761#L75 main_#t~ret35 := valid_product_#res;main_~tmp~5 := main_#t~ret35;havoc main_#t~ret35; 762#L485 assume 0 != main_~tmp~5; 673#L461 ~switchedOnBeforeTS~0 := 0; 674#L289 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 712#L310-1 [2021-08-27 16:22:35,703 INFO L793 eck$LassoCheckResult]: Loop: 712#L310-1 assume !false; 738#L346 assume test_~splverifierCounter~0 < 4; 739#L347 test_~tmp~4 := test_#t~nondet31;havoc test_#t~nondet31; 867#L355 assume !(0 != test_~tmp~4); 866#L355-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 865#L365 assume !(0 != test_~tmp___0~2); 863#L365-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 862#L375 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 860#L383-2 havoc __utac_acc__Specification5_spec__2_#t~ret28;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 859#L213 __utac_acc__Specification5_spec__2_#t~ret28 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret28;havoc __utac_acc__Specification5_spec__2_#t~ret28; 857#L299 assume !(0 != ~pumpRunning~0); 855#L102 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 852#L160 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret8, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 851#L134-1 assume !(0 != ~pumpRunning~0); 820#L109 havoc __utac_acc__Specification5_spec__3_#t~ret29, __utac_acc__Specification5_spec__3_#t~ret30, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~1;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~1;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 819#L940 __utac_acc__Specification5_spec__3_#t~ret29 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret29;havoc __utac_acc__Specification5_spec__3_#t~ret29; 771#L310 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~3;havoc isPumpRunning_~retValue_acc~3;isPumpRunning_~retValue_acc~3 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~3; 772#L213-1 __utac_acc__Specification5_spec__3_#t~ret30 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~1 := __utac_acc__Specification5_spec__3_#t~ret30;havoc __utac_acc__Specification5_spec__3_#t~ret30; 786#L314 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~1); 712#L310-1 [2021-08-27 16:22:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:22:35,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:35,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833590558] [2021-08-27 16:22:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:35,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,747 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,786 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:35,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1175247994, now seen corresponding path program 1 times [2021-08-27 16:22:35,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:35,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697473998] [2021-08-27 16:22:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:35,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,792 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,797 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:22:35,797 INFO L82 PathProgramCache]: Analyzing trace with hash 381563252, now seen corresponding path program 1 times [2021-08-27 16:22:35,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:22:35,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122471100] [2021-08-27 16:22:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:22:35,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:22:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,819 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:22:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:22:35,858 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:23:22,119 WARN L207 SmtUtils]: Spent 45.96 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:24:10,145 WARN L207 SmtUtils]: Spent 23.42 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:24:10,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:24:10 BoogieIcfgContainer [2021-08-27 16:24:10,244 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:24:10,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:24:10,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:24:10,245 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:24:10,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:22:34" (3/4) ... [2021-08-27 16:24:10,248 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:24:10,293 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:24:10,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:24:10,296 INFO L168 Benchmark]: Toolchain (without parser) took 97800.86 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 46.4 MB in the beginning and 40.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,298 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:24:10,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.79 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 39.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.71 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 36.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,299 INFO L168 Benchmark]: Boogie Preprocessor took 33.05 ms. Allocated memory is still 62.9 MB. Free memory was 36.2 MB in the beginning and 33.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,300 INFO L168 Benchmark]: RCFGBuilder took 1025.71 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 39.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,300 INFO L168 Benchmark]: BuchiAutomizer took 96191.36 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 39.8 MB in the beginning and 43.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,301 INFO L168 Benchmark]: Witness Printer took 49.99 ms. Allocated memory is still 96.5 MB. Free memory was 43.7 MB in the beginning and 40.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:24:10,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.79 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 39.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.71 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 36.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.05 ms. Allocated memory is still 62.9 MB. Free memory was 36.2 MB in the beginning and 33.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1025.71 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 39.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 96191.36 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 39.8 MB in the beginning and 43.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * Witness Printer took 49.99 ms. Allocated memory is still 96.5 MB. Free memory was 43.7 MB in the beginning and 40.7 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 201 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 96.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 95.6s. Construction of modules took 0.1s. 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 26.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 119 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 201 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 393 SDtfs, 695 SDslu, 468 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 138.0ms 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: 345]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=22731} State at position 1 is {NULL=0, NULL=0, NULL=22750, NULL=0, retValue_acc=1, NULL=22731, retValue_acc=0, NULL=22745, NULL=22746, tmp=0, NULL=22755, NULL=22752, methaneLevelCritical=0, NULL=22738, NULL=0, tmp=1, NULL=0, tmp=0, NULL=22742, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b290700=0, NULL=22753, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68033028=0, NULL=0, NULL=0, NULL=22735, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=22733, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bee9029=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72a0cf06=83, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=22758, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1137cfe0=0, NULL=22736, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=22737, \result=1, NULL=22734, head=0, pumpRunning=0, NULL=22757, \result=0, tmp___0=0, NULL=22743, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69233523=0, NULL=22748, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@794cfe4a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36186a4=0, NULL=0, NULL=22747, NULL=22751, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16df489d=0, NULL=0, NULL=22740, NULL=0, retValue_acc=1, tmp___2=83, tmp___0=0, NULL=22759, splverifierCounter=0, NULL=0, NULL=0, NULL=22739, NULL=22744, NULL=22749, tmp=0, head=0, NULL=0, NULL=22741, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bca2a05=0, NULL=0, NULL=22732, NULL=0, NULL=22756, NULL=22754, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L283] int switchedOnBeforeTS ; [L402] int cleanupTimeShifts = 4; [L668] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L865] int waterLevel = 1; [L866] int methaneLevelCritical = 0; [L476] int retValue_acc ; [L477] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L483] tmp = valid_product() [L485] COND TRUE \read(tmp) [L288] switchedOnBeforeTS = 0 [L336] int splverifierCounter ; [L337] int tmp ; [L338] int tmp___0 ; [L339] int tmp___1 ; [L340] int tmp___2 ; [L343] splverifierCounter = 0 Loop: [L345] COND TRUE 1 [L347] COND TRUE splverifierCounter < 4 [L353] tmp = __VERIFIER_nondet_int() [L355] COND FALSE !(\read(tmp)) [L363] tmp___0 = __VERIFIER_nondet_int() [L365] COND FALSE !(\read(tmp___0)) [L373] tmp___2 = __VERIFIER_nondet_int() [L375] COND TRUE \read(tmp___2) [L276] systemActive = 1 [L209] int retValue_acc ; [L212] retValue_acc = pumpRunning [L213] return (retValue_acc); [L297] switchedOnBeforeTS = isPumpRunning() [L102] COND FALSE !(\read(pumpRunning)) [L109] COND TRUE \read(systemActive) [L157] int tmp ; [L160] COND FALSE !(\read(pumpRunning)) [L131] int tmp ; [L134] COND FALSE !(\read(pumpRunning)) [L303] int tmp ; [L304] int tmp___0 ; [L936] int retValue_acc ; [L939] retValue_acc = waterLevel [L940] return (retValue_acc); [L308] tmp = getWaterLevel() [L310] COND TRUE tmp != 2 [L209] int retValue_acc ; [L212] retValue_acc = pumpRunning [L213] return (retValue_acc); [L312] tmp___0 = isPumpRunning() [L314] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:24:10,361 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...