./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product13.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_product13.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 fb700318d56e75ca58c97ec0b4d91c744aa1d288 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:21:45,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:21:45,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:21:45,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:21:45,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:21:45,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:21:45,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:21:45,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:21:45,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:21:45,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:21:45,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:21:45,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:21:45,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:21:45,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:21:45,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:21:45,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:21:45,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:21:45,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:21:45,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:21:45,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:21:45,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:21:45,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:21:45,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:21:45,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:21:45,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:21:45,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:21:45,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:21:45,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:21:45,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:21:45,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:21:45,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:21:45,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:21:45,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:21:45,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:21:45,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:21:45,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:21:45,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:21:45,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:21:45,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:21:45,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:21:45,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:21:45,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:21:45,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:21:45,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:21:45,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:21:45,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:21:45,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:21:45,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:21:45,123 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:21:45,123 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:21:45,123 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:21:45,123 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:21:45,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:21:45,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:21:45,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:21:45,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:21:45,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:21:45,126 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:21:45,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb700318d56e75ca58c97ec0b4d91c744aa1d288 [2021-08-27 16:21:45,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:21:45,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:21:45,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:21:45,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:21:45,373 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:21:45,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product13.cil.c [2021-08-27 16:21:45,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dfb8762/0d6adda0431b4314a481dcfd2addbc80/FLAG3fc46f889 [2021-08-27 16:21:45,788 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:21:45,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product13.cil.c [2021-08-27 16:21:45,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dfb8762/0d6adda0431b4314a481dcfd2addbc80/FLAG3fc46f889 [2021-08-27 16:21:45,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67dfb8762/0d6adda0431b4314a481dcfd2addbc80 [2021-08-27 16:21:45,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:21:45,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:21:45,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:21:45,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:21:45,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:21:45,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:21:45" (1/1) ... [2021-08-27 16:21:45,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de177be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:45, skipping insertion in model container [2021-08-27 16:21:45,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:21:45" (1/1) ... [2021-08-27 16:21:45,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:21:45,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:21:46,064 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_product13.cil.c[13436,13449] [2021-08-27 16:21:46,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:21:46,101 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:21:46,152 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_product13.cil.c[13436,13449] [2021-08-27 16:21:46,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:21:46,184 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:21:46,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46 WrapperNode [2021-08-27 16:21:46,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:21:46,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:21:46,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:21:46,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:21:46,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:21:46,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:21:46,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:21:46,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:21:46,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:21:46,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:21:46,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:21:46,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:21:46,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (1/1) ... [2021-08-27 16:21:46,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:21:46,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:21:46,276 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 16:21:46,279 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 16:21:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:21:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:21:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:21:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:21:46,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:21:46,804 INFO L299 CfgBuilder]: Removed 110 assume(true) statements. [2021-08-27 16:21:46,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:21:46 BoogieIcfgContainer [2021-08-27 16:21:46,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:21:46,805 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:21:46,806 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:21:46,808 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:21:46,809 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:21:46,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:21:45" (1/3) ... [2021-08-27 16:21:46,809 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3adbed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:21:46, skipping insertion in model container [2021-08-27 16:21:46,809 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:21:46,810 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:21:46" (2/3) ... [2021-08-27 16:21:46,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3adbed1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:21:46, skipping insertion in model container [2021-08-27 16:21:46,810 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:21:46,810 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:21:46" (3/3) ... [2021-08-27 16:21:46,811 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product13.cil.c [2021-08-27 16:21:46,840 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:21:46,840 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:21:46,840 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:21:46,840 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:21:46,840 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:21:46,840 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:21:46,840 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:21:46,841 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:21:46,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 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 16:21:46,872 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:21:46,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:21:46,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:21:46,877 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:46,878 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:46,878 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:21:46,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 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 16:21:46,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:21:46,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:21:46,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:21:46,888 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:46,889 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:46,896 INFO L791 eck$LassoCheckResult]: Stem: 56#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 34#L-1true havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 55#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; 67#L75true main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 27#L678true assume 0 != main_~tmp~4; 44#L653true ~switchedOnBeforeTS~0 := 0; 6#L455true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 31#L476-1true [2021-08-27 16:21:46,897 INFO L793 eck$LassoCheckResult]: Loop: 31#L476-1true assume !false; 12#L858true assume test_~splverifierCounter~0 < 4; 53#L859true test_~tmp~7 := test_#t~nondet76;havoc test_#t~nondet76; 36#L867true assume !(0 != test_~tmp~7); 7#L867-1true test_~tmp___0~1 := test_#t~nondet77;havoc test_#t~nondet77; 18#L877true assume !(0 != test_~tmp___0~1); 72#L877-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 60#L887true assume 0 != test_~tmp___2~0; 26#L893-2true havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 4#L806true __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 69#L465true assume !(0 != ~pumpRunning~0); 61#L704true assume !(0 != ~systemActive~0); 38#L711true havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~6;havoc getWaterLevel_~retValue_acc~6;getWaterLevel_~retValue_acc~6 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~6; 45#L578true __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 39#L476true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 31#L476-1true [2021-08-27 16:21:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:21:46,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:46,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713483830] [2021-08-27 16:21:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:46,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,078 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 93981420, now seen corresponding path program 1 times [2021-08-27 16:21:47,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593828545] [2021-08-27 16:21:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,172 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2028006630, now seen corresponding path program 1 times [2021-08-27 16:21:47,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601106087] [2021-08-27 16:21:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:21:47,271 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 16:21:47,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:21:47,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601106087] [2021-08-27 16:21:47,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601106087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:21:47,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:21:47,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:21:47,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211194802] [2021-08-27 16:21:47,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:21:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:21:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:21:47,394 INFO L87 Difference]: Start difference. First operand has 75 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 16:21:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:21:47,518 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-08-27 16:21:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:21:47,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 100 transitions. [2021-08-27 16:21:47,525 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:21:47,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 68 states and 93 transitions. [2021-08-27 16:21:47,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-08-27 16:21:47,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-08-27 16:21:47,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 93 transitions. [2021-08-27 16:21:47,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:21:47,531 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:21:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 93 transitions. [2021-08-27 16:21:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 16:21:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 67 states have internal predecessors, (93), 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 16:21:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2021-08-27 16:21:47,555 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:21:47,555 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2021-08-27 16:21:47,555 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:21:47,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 93 transitions. [2021-08-27 16:21:47,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:21:47,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:21:47,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:21:47,559 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:47,559 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:47,559 INFO L791 eck$LassoCheckResult]: Stem: 231#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 217#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 218#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; 230#L75 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 208#L678 assume 0 != main_~tmp~4; 209#L653 ~switchedOnBeforeTS~0 := 0; 172#L455 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 173#L476-1 [2021-08-27 16:21:47,560 INFO L793 eck$LassoCheckResult]: Loop: 173#L476-1 assume !false; 183#L858 assume test_~splverifierCounter~0 < 4; 184#L859 test_~tmp~7 := test_#t~nondet76;havoc test_#t~nondet76; 219#L867 assume !(0 != test_~tmp~7); 174#L867-1 test_~tmp___0~1 := test_#t~nondet77;havoc test_#t~nondet77; 175#L877 assume !(0 != test_~tmp___0~1); 196#L877-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 233#L887 assume 0 != test_~tmp___2~0; 191#L893-2 havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 168#L806 __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 169#L465 assume !(0 != ~pumpRunning~0); 228#L704 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 210#L736 assume !(0 != ~pumpRunning~0); 211#L711 havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~6;havoc getWaterLevel_~retValue_acc~6;getWaterLevel_~retValue_acc~6 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~6; 220#L578 __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 223#L476 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~3); 173#L476-1 [2021-08-27 16:21:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:21:47,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135246301] [2021-08-27 16:21:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1402071741, now seen corresponding path program 1 times [2021-08-27 16:21:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558783884] [2021-08-27 16:21:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,659 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,663 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1576832375, now seen corresponding path program 1 times [2021-08-27 16:21:47,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389514211] [2021-08-27 16:21:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:21:47,720 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 16:21:47,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:21:47,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389514211] [2021-08-27 16:21:47,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389514211] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:21:47,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:21:47,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:21:47,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143635246] [2021-08-27 16:21:47,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:21:47,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:21:47,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:21:47,807 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. cyclomatic complexity: 27 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:21:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:21:47,900 INFO L93 Difference]: Finished difference Result 188 states and 255 transitions. [2021-08-27 16:21:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:21:47,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 255 transitions. [2021-08-27 16:21:47,906 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 87 [2021-08-27 16:21:47,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 188 states and 255 transitions. [2021-08-27 16:21:47,909 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2021-08-27 16:21:47,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-08-27 16:21:47,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 255 transitions. [2021-08-27 16:21:47,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:21:47,914 INFO L681 BuchiCegarLoop]: Abstraction has 188 states and 255 transitions. [2021-08-27 16:21:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 255 transitions. [2021-08-27 16:21:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 129. [2021-08-27 16:21:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.3333333333333333) internal successors, (172), 128 states have internal predecessors, (172), 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 16:21:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-08-27 16:21:47,925 INFO L704 BuchiCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-08-27 16:21:47,925 INFO L587 BuchiCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-08-27 16:21:47,925 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:21:47,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 172 transitions. [2021-08-27 16:21:47,926 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 87 [2021-08-27 16:21:47,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:21:47,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:21:47,926 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:47,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:21:47,926 INFO L791 eck$LassoCheckResult]: Stem: 518#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 493#L-1 havoc main_#res;havoc main_#t~ret56, main_~retValue_acc~7, main_~tmp~4;havoc main_~retValue_acc~7;havoc main_~tmp~4; 494#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; 517#L75 main_#t~ret56 := valid_product_#res;main_~tmp~4 := main_#t~ret56;havoc main_#t~ret56; 484#L678 assume 0 != main_~tmp~4; 485#L653 ~switchedOnBeforeTS~0 := 0; 444#L455 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 445#L476-1 [2021-08-27 16:21:47,927 INFO L793 eck$LassoCheckResult]: Loop: 445#L476-1 assume !false; 458#L858 assume test_~splverifierCounter~0 < 4; 459#L859 test_~tmp~7 := test_#t~nondet76;havoc test_#t~nondet76; 515#L867 assume !(0 != test_~tmp~7); 568#L867-1 test_~tmp___0~1 := test_#t~nondet77;havoc test_#t~nondet77; 567#L877 assume !(0 != test_~tmp___0~1); 565#L877-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 564#L887 assume 0 != test_~tmp___2~0; 482#L893-2 havoc __utac_acc__Specification5_spec__2_#t~ret43;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 440#L806 __utac_acc__Specification5_spec__2_#t~ret43 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret43;havoc __utac_acc__Specification5_spec__2_#t~ret43; 441#L465 assume !(0 != ~pumpRunning~0); 522#L704 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 486#L736 assume !(0 != ~pumpRunning~0); 487#L711 havoc __utac_acc__Specification5_spec__3_#t~ret44, __utac_acc__Specification5_spec__3_#t~ret45, __utac_acc__Specification5_spec__3_~tmp~3, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~3;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~6;havoc getWaterLevel_~retValue_acc~6;getWaterLevel_~retValue_acc~6 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~6; 499#L578 __utac_acc__Specification5_spec__3_#t~ret44 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~3 := __utac_acc__Specification5_spec__3_#t~ret44;havoc __utac_acc__Specification5_spec__3_#t~ret44; 500#L476 assume 2 != __utac_acc__Specification5_spec__3_~tmp~3;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~9;havoc isPumpRunning_~retValue_acc~9;isPumpRunning_~retValue_acc~9 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~9; 501#L806-1 __utac_acc__Specification5_spec__3_#t~ret45 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret45;havoc __utac_acc__Specification5_spec__3_#t~ret45; 514#L480 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 445#L476-1 [2021-08-27 16:21:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:21:47,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965755747] [2021-08-27 16:21:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,952 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,987 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1228773470, now seen corresponding path program 1 times [2021-08-27 16:21:47,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35529771] [2021-08-27 16:21:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,992 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:47,995 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:21:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash 787528740, now seen corresponding path program 1 times [2021-08-27 16:21:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:21:47,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927311663] [2021-08-27 16:21:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:21:47,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:21:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:48,031 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:21:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:21:48,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:22:28,441 WARN L207 SmtUtils]: Spent 40.24 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:23:10,181 WARN L207 SmtUtils]: Spent 20.62 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:23:10,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:23:10 BoogieIcfgContainer [2021-08-27 16:23:10,256 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:23:10,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:23:10,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:23:10,256 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:23:10,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:21:46" (3/4) ... [2021-08-27 16:23:10,258 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:23:10,283 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:23:10,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:23:10,284 INFO L168 Benchmark]: Toolchain (without parser) took 84468.13 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 37.0 MB in the beginning and 58.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,285 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:23:10,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.09 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 35.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 32.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,286 INFO L168 Benchmark]: Boogie Preprocessor took 33.20 ms. Allocated memory is still 58.7 MB. Free memory was 32.2 MB in the beginning and 30.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,286 INFO L168 Benchmark]: RCFGBuilder took 550.54 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 45.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,286 INFO L168 Benchmark]: BuchiAutomizer took 83450.18 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 45.4 MB in the beginning and 60.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,287 INFO L168 Benchmark]: Witness Printer took 27.85 ms. Allocated memory is still 104.9 MB. Free memory was 60.9 MB in the beginning and 58.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:23:10,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.09 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 35.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 32.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.20 ms. Allocated memory is still 58.7 MB. Free memory was 32.2 MB in the beginning and 30.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 550.54 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 45.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83450.18 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 45.4 MB in the beginning and 60.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. * Witness Printer took 27.85 ms. Allocated memory is still 104.9 MB. Free memory was 60.9 MB in the beginning and 58.9 MB in the end (delta: 2.0 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 6 locations. The remainder module has 129 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 83.0s. 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 26.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 59 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 129 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 238 SDtfs, 568 SDslu, 274 SDs, 0 SdLazy, 75 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 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: 857]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b347a33=0, NULL=0, NULL=0, NULL=33014, NULL=0, NULL=1, NULL=0, NULL=33011, NULL=0, NULL=33000, retValue_acc=0, NULL=33008, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59dc1f64=0, NULL=33006, tmp=1, NULL=0, NULL=0, tmp=0, NULL=0, tmp___1=0, NULL=33017, NULL=0, NULL=0, NULL=33001, NULL=33016, NULL=33004, cleanupTimeShifts=4, switchedOnBeforeTS=0, NULL=33015, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15ae6aa3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22adc68f=0, \result=0, NULL=33003, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@289c0bbf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1863eac1=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27ba061a=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=33009, \result=1, NULL=0, NULL=0, NULL=0, NULL=32994, NULL=0, NULL=0, NULL=33002, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=6914, \result=0, tmp=1, NULL=0, NULL=0, NULL=0, NULL=33013, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b4e6974=0, NULL=33005, NULL=33012, NULL=0, NULL=33010, NULL=0, NULL=32999, retValue_acc=1, retValue_acc=1, tmp___2=64, NULL=0, NULL=33018, tmp___0=0, NULL=6913, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dda5765=0, NULL=33007, NULL=6912, head=0, NULL=0, NULL=0, tmp=0, NULL=32998, NULL=0, NULL=0, NULL=0, NULL=32997, retValue_acc=0, NULL=32996, NULL=32995} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L449] int switchedOnBeforeTS ; [L503] int waterLevel = 1; [L504] int methaneLevelCritical = 0; [L592] int cleanupTimeShifts = 4; [L694] int pumpRunning = 0; [L695] int systemActive = 1; [L669] int retValue_acc ; [L670] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L676] tmp = valid_product() [L678] COND TRUE \read(tmp) [L454] switchedOnBeforeTS = 0 [L848] int splverifierCounter ; [L849] int tmp ; [L850] int tmp___0 ; [L851] int tmp___1 ; [L852] int tmp___2 ; [L855] splverifierCounter = 0 Loop: [L857] COND TRUE 1 [L859] COND TRUE splverifierCounter < 4 [L865] tmp = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp)) [L875] tmp___0 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___0)) [L885] tmp___2 = __VERIFIER_nondet_int() [L887] COND TRUE \read(tmp___2) [L802] int retValue_acc ; [L805] retValue_acc = pumpRunning [L806] return (retValue_acc); [L463] switchedOnBeforeTS = isPumpRunning() [L704] COND FALSE !(\read(pumpRunning)) [L711] COND TRUE \read(systemActive) [L733] int tmp ; [L736] COND FALSE !(\read(pumpRunning)) [L469] int tmp ; [L470] int tmp___0 ; [L574] int retValue_acc ; [L577] retValue_acc = waterLevel [L578] return (retValue_acc); [L474] tmp = getWaterLevel() [L476] COND TRUE tmp != 2 [L802] int retValue_acc ; [L805] retValue_acc = pumpRunning [L806] return (retValue_acc); [L478] tmp___0 = isPumpRunning() [L480] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:23:10,335 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...