./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product44.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_spec1_product44.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 d4eb13f545cea9ac583f40da9d0bc0269dc50786 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:57:06,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:57:06,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:57:06,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:57:06,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:57:06,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:57:06,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:57:06,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:57:06,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:57:06,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:57:06,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:57:06,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:57:06,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:57:06,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:57:06,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:57:06,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:57:06,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:57:06,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:57:06,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:57:06,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:57:06,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:57:06,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:57:06,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:57:06,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:57:06,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:57:06,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:57:06,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:57:06,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:57:06,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:57:06,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:57:06,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:57:06,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:57:06,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:57:06,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:57:06,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:57:06,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:57:06,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:57:06,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:57:06,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:57:06,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:57:06,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:57:06,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:57:06,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:57:06,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:57:06,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:57:06,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:57:06,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:57:06,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:57:06,603 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:57:06,603 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:57:06,603 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:57:06,604 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:57:06,604 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:57:06,604 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:57:06,604 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:57:06,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:57:06,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:57:06,605 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:57:06,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:57:06,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:57:06,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:57:06,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:57:06,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:57:06,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:57:06,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:57:06,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:57:06,607 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:57:06,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:57:06,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:57:06,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:57:06,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:57:06,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:57:06,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:57:06,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:57:06,609 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:57:06,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4eb13f545cea9ac583f40da9d0bc0269dc50786 [2021-08-27 15:57:06,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:57:06,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:57:06,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:57:06,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:57:06,953 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:57:06,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-08-27 15:57:07,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5836238/c22cd752dffe47a7a5985365f3b9a882/FLAGdcd2ec034 [2021-08-27 15:57:07,467 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:57:07,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2021-08-27 15:57:07,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5836238/c22cd752dffe47a7a5985365f3b9a882/FLAGdcd2ec034 [2021-08-27 15:57:07,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5836238/c22cd752dffe47a7a5985365f3b9a882 [2021-08-27 15:57:07,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:57:07,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:57:07,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:07,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:57:07,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:57:07,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:07" (1/1) ... [2021-08-27 15:57:07,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66eadabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:07, skipping insertion in model container [2021-08-27 15:57:07,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:07" (1/1) ... [2021-08-27 15:57:07,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:57:07,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:57:08,002 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_spec1_product44.cil.c[1281,1294] [2021-08-27 15:57:08,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:08,163 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:57:08,173 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_spec1_product44.cil.c[1281,1294] [2021-08-27 15:57:08,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:08,264 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:57:08,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08 WrapperNode [2021-08-27 15:57:08,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:08,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:08,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:57:08,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:57:08,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:08,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:57:08,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:57:08,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:57:08,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:57:08,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:57:08,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:57:08,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:57:08,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (1/1) ... [2021-08-27 15:57:08,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:57:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:57:08,428 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 15:57:08,440 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 15:57:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:57:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:57:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:57:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:57:09,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:57:09,120 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-08-27 15:57:09,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:09 BoogieIcfgContainer [2021-08-27 15:57:09,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:57:09,123 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:57:09,123 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:57:09,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:57:09,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:09,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:57:07" (1/3) ... [2021-08-27 15:57:09,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6524fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:09, skipping insertion in model container [2021-08-27 15:57:09,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:09,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:08" (2/3) ... [2021-08-27 15:57:09,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6524fcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:09, skipping insertion in model container [2021-08-27 15:57:09,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:09,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:09" (3/3) ... [2021-08-27 15:57:09,128 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2021-08-27 15:57:09,165 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:57:09,165 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:57:09,165 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:57:09,165 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:57:09,166 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:57:09,166 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:57:09,166 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:57:09,166 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:57:09,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 15:57:09,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-08-27 15:57:09,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:09,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:09,203 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,203 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,203 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:57:09,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 15:57:09,208 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-08-27 15:57:09,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:09,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:09,209 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,209 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,213 INFO L791 eck$LassoCheckResult]: Stem: 78#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #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(41, #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;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 60#L-1true havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 55#L840true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 70#L848true main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 6#L935true assume 0 != main_~tmp~8; 74#L912true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 23#L797-1true [2021-08-27 15:57:09,214 INFO L793 eck$LassoCheckResult]: Loop: 23#L797-1true assume !false; 24#L434true assume test_~splverifierCounter~0 < 4; 41#L435true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 85#L443true assume !(0 != test_~tmp~3); 56#L443-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 65#L453true assume !(0 != test_~tmp___0~0); 51#L453-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 61#L463true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 62#L471-1true assume !(0 != ~pumpRunning~0); 46#L508true assume !(0 != ~systemActive~0); 64#L515true havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 48#L738-1true __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 28#L797true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 23#L797-1true [2021-08-27 15:57:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:57:09,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:09,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092340113] [2021-08-27 15:57:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:09,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:09,446 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:09,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1671648180, now seen corresponding path program 1 times [2021-08-27 15:57:09,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:09,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764083762] [2021-08-27 15:57:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:09,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:09,634 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 15:57:09,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:09,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764083762] [2021-08-27 15:57:09,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764083762] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:09,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:09,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:09,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562690770] [2021-08-27 15:57:09,640 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:09,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:09,653 INFO L87 Difference]: Start difference. First operand has 86 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 85 states have internal predecessors, (129), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 15:57:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:09,737 INFO L93 Difference]: Finished difference Result 166 states and 234 transitions. [2021-08-27 15:57:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:09,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 166 states and 234 transitions. [2021-08-27 15:57:09,747 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 106 [2021-08-27 15:57:09,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 166 states to 152 states and 219 transitions. [2021-08-27 15:57:09,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 152 [2021-08-27 15:57:09,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 152 [2021-08-27 15:57:09,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 152 states and 219 transitions. [2021-08-27 15:57:09,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:09,761 INFO L681 BuchiCegarLoop]: Abstraction has 152 states and 219 transitions. [2021-08-27 15:57:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states and 219 transitions. [2021-08-27 15:57:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-08-27 15:57:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.44) internal successors, (216), 149 states have internal predecessors, (216), 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 15:57:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2021-08-27 15:57:09,795 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 216 transitions. [2021-08-27 15:57:09,795 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 216 transitions. [2021-08-27 15:57:09,795 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:57:09,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 216 transitions. [2021-08-27 15:57:09,797 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 104 [2021-08-27 15:57:09,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:09,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:09,798 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,798 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,799 INFO L791 eck$LassoCheckResult]: Stem: 359#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #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(41, #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;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 343#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 338#L840 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 339#L848 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 267#L935 assume 0 != main_~tmp~8; 268#L912 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 292#L797-1 [2021-08-27 15:57:09,799 INFO L793 eck$LassoCheckResult]: Loop: 292#L797-1 assume !false; 293#L434 assume test_~splverifierCounter~0 < 4; 294#L435 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 319#L443 assume !(0 != test_~tmp~3); 366#L443-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 348#L453 assume !(0 != test_~tmp___0~0); 276#L453-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 333#L463 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 344#L471-1 assume !(0 != ~pumpRunning~0); 325#L508 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 326#L540 assume !(0 == ~pumpRunning~0); 347#L515 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 329#L738-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 301#L797 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 292#L797-1 [2021-08-27 15:57:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:57:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:09,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669884319] [2021-08-27 15:57:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:09,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:09,840 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:09,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -323255269, now seen corresponding path program 1 times [2021-08-27 15:57:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:09,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502475043] [2021-08-27 15:57:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:09,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:09,896 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 15:57:09,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:09,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502475043] [2021-08-27 15:57:09,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502475043] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:09,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:09,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:09,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559280325] [2021-08-27 15:57:09,898 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:09,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:09,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:09,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:09,899 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15:57:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:09,966 INFO L93 Difference]: Finished difference Result 233 states and 322 transitions. [2021-08-27 15:57:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:09,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 322 transitions. [2021-08-27 15:57:09,970 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 167 [2021-08-27 15:57:09,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 233 states and 322 transitions. [2021-08-27 15:57:09,972 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 233 [2021-08-27 15:57:09,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 233 [2021-08-27 15:57:09,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 322 transitions. [2021-08-27 15:57:09,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:09,974 INFO L681 BuchiCegarLoop]: Abstraction has 233 states and 322 transitions. [2021-08-27 15:57:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 322 transitions. [2021-08-27 15:57:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-08-27 15:57:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 233 states have (on average 1.3819742489270386) internal successors, (322), 232 states have internal predecessors, (322), 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 15:57:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 322 transitions. [2021-08-27 15:57:09,987 INFO L704 BuchiCegarLoop]: Abstraction has 233 states and 322 transitions. [2021-08-27 15:57:09,987 INFO L587 BuchiCegarLoop]: Abstraction has 233 states and 322 transitions. [2021-08-27 15:57:09,987 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:57:09,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states and 322 transitions. [2021-08-27 15:57:09,990 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 167 [2021-08-27 15:57:09,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:09,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:09,991 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,991 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:09,992 INFO L791 eck$LassoCheckResult]: Stem: 744#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #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(41, #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;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 737#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 726#L840 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 727#L848 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 655#L935 assume 0 != main_~tmp~8; 656#L912 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 679#L797-1 [2021-08-27 15:57:09,992 INFO L793 eck$LassoCheckResult]: Loop: 679#L797-1 assume !false; 680#L434 assume test_~splverifierCounter~0 < 4; 681#L435 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 701#L443 assume !(0 != test_~tmp~3); 866#L443-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 864#L453 assume !(0 != test_~tmp___0~0); 861#L453-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 860#L463 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 736#L471-1 assume !(0 != ~pumpRunning~0); 709#L508 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 710#L540 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret65, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 857#L778 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 882#L783 isHighWaterLevel_#t~ret65 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret65;havoc isHighWaterLevel_#t~ret65; 881#L660 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 880#L660-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 788#L666 processEnvironment_#t~ret46 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret46;havoc processEnvironment_#t~ret46; 787#L544 assume !(0 != processEnvironment_~tmp~4); 734#L515 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 711#L738-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 687#L797 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 679#L797-1 [2021-08-27 15:57:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:57:09,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:09,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324466885] [2021-08-27 15:57:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:09,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,058 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,129 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1551152025, now seen corresponding path program 1 times [2021-08-27 15:57:10,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:10,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286338845] [2021-08-27 15:57:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:10,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,137 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,147 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1536440051, now seen corresponding path program 1 times [2021-08-27 15:57:10,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:10,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616295408] [2021-08-27 15:57:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:10,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,189 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:10,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:49,834 WARN L207 SmtUtils]: Spent 39.34 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:58:28,958 WARN L207 SmtUtils]: Spent 19.59 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:58:29,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:58:29 BoogieIcfgContainer [2021-08-27 15:58:29,070 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:58:29,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:58:29,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:58:29,071 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:58:29,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:09" (3/4) ... [2021-08-27 15:58:29,074 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:58:29,126 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:58:29,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:58:29,130 INFO L168 Benchmark]: Toolchain (without parser) took 81292.69 ms. Allocated memory was 62.9 MB in the beginning and 109.1 MB in the end (delta: 46.1 MB). Free memory was 43.1 MB in the beginning and 55.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,133 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:58:29,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.17 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 39.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.91 ms. Allocated memory is still 62.9 MB. Free memory was 39.1 MB in the beginning and 35.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,135 INFO L168 Benchmark]: Boogie Preprocessor took 69.11 ms. Allocated memory is still 62.9 MB. Free memory was 35.8 MB in the beginning and 33.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,135 INFO L168 Benchmark]: RCFGBuilder took 715.31 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 33.7 MB in the beginning and 43.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,135 INFO L168 Benchmark]: BuchiAutomizer took 79947.90 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 43.3 MB in the beginning and 58.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,135 INFO L168 Benchmark]: Witness Printer took 57.83 ms. Allocated memory is still 109.1 MB. Free memory was 58.9 MB in the beginning and 55.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:29,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.17 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 39.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.91 ms. Allocated memory is still 62.9 MB. Free memory was 39.1 MB in the beginning and 35.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.11 ms. Allocated memory is still 62.9 MB. Free memory was 35.8 MB in the beginning and 33.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 715.31 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 33.7 MB in the beginning and 43.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 79947.90 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 43.3 MB in the beginning and 58.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 57.83 ms. Allocated memory is still 109.1 MB. Free memory was 58.9 MB in the beginning and 55.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 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 3 locations. The remainder module has 233 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 79.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 79.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 36.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 233 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 230 SDtfs, 210 SDslu, 158 SDs, 0 SdLazy, 32 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 433]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=16738} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=16738, NULL=16743, NULL=0, NULL=16740, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25fca36c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c2b8ea2=78, NULL=16755, NULL=16762, methaneLevelCritical=0, NULL=16745, retValue_acc=1, tmp___0=0, retValue_acc=0, tmp=0, NULL=0, NULL=0, tmp___1=0, NULL=16763, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4088fa7a=0, tmp___0=0, NULL=0, NULL=0, NULL=16747, NULL=16765, NULL=16759, cleanupTimeShifts=4, NULL=16760, NULL=16746, NULL=16753, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34f62873=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bc43c64=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78da8d5b=0, NULL=0, systemActive=1, waterLevel=1, NULL=16751, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a413388=0, NULL=0, NULL=16754, retValue_acc=0, \result=0, NULL=0, tmp___0=0, NULL=0, NULL=0, NULL=16742, NULL=0, NULL=0, retValue_acc=0, NULL=16766, \result=1, head=0, pumpRunning=0, retValue_acc=1, \result=0, NULL=16756, tmp=0, NULL=0, NULL=0, tmp=1, NULL=0, NULL=16761, \result=1, NULL=16741, NULL=0, NULL=16749, NULL=0, NULL=16750, tmp___2=78, NULL=0, NULL=16764, NULL=16767, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=16752, NULL=16739, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bf26f35=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65c7f4f4=0, head=0, tmp=0, NULL=0, NULL=0, NULL=16744, NULL=0, NULL=0, NULL=16758, NULL=16757} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L500] int pumpRunning = 0; [L501] int systemActive = 1; [L695] int waterLevel = 1; [L696] int methaneLevelCritical = 0; [L853] int cleanupTimeShifts = 4; [L926] int retValue_acc ; [L927] int tmp ; [L844] int retValue_acc ; [L847] retValue_acc = 1 [L848] return (retValue_acc); [L933] tmp = valid_product() [L935] COND TRUE \read(tmp) [L424] int splverifierCounter ; [L425] int tmp ; [L426] int tmp___0 ; [L427] int tmp___1 ; [L428] int tmp___2 ; [L431] splverifierCounter = 0 Loop: [L433] COND TRUE 1 [L435] COND TRUE splverifierCounter < 4 [L441] tmp = __VERIFIER_nondet_int() [L443] COND FALSE !(\read(tmp)) [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND FALSE !(\read(tmp___0)) [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L689] systemActive = 1 [L508] COND FALSE !(\read(pumpRunning)) [L515] COND TRUE \read(systemActive) [L537] int tmp ; [L540] COND TRUE ! pumpRunning [L652] int retValue_acc ; [L653] int tmp ; [L654] int tmp___0 ; [L775] int retValue_acc ; [L778] COND TRUE waterLevel < 2 [L779] retValue_acc = 1 [L780] return (retValue_acc); [L658] tmp = isHighWaterSensorDry() [L660] COND TRUE \read(tmp) [L661] tmp___0 = 0 [L665] retValue_acc = tmp___0 [L666] return (retValue_acc); [L542] tmp = isHighWaterLevel() [L544] COND FALSE !(\read(tmp)) [L790] int tmp ; [L791] int tmp___0 ; [L734] int retValue_acc ; [L737] retValue_acc = methaneLevelCritical [L738] return (retValue_acc); [L795] tmp = isMethaneLevelCritical() [L797] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:58:29,204 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...