./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product54.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_product54.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 9c69bef4f4f2450c32edaec1a26ef48007ef0e6d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:58:01,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:58:01,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:58:01,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:58:01,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:58:01,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:58:01,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:58:01,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:58:01,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:58:01,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:58:01,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:58:01,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:58:01,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:58:01,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:58:01,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:58:01,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:58:01,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:58:01,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:58:01,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:58:01,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:58:01,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:58:01,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:58:01,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:58:01,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:58:01,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:58:01,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:58:01,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:58:01,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:58:01,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:58:01,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:58:01,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:58:01,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:58:01,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:58:01,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:58:01,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:58:01,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:58:01,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:58:01,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:58:01,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:58:01,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:58:01,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:58:01,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:58:01,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:58:01,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:58:01,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:58:01,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:58:01,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:58:01,237 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:58:01,237 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:58:01,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:58:01,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:58:01,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:58:01,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:58:01,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:58:01,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:58:01,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:58:01,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:58:01,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:58:01,241 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:58:01,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c69bef4f4f2450c32edaec1a26ef48007ef0e6d [2021-08-27 15:58:01,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:58:01,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:58:01,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:58:01,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:58:01,485 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:58:01,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2021-08-27 15:58:01,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d921c04d/791e30827724438c8c07120f47309e8b/FLAG4a1fcfa9e [2021-08-27 15:58:01,899 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:58:01,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2021-08-27 15:58:01,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d921c04d/791e30827724438c8c07120f47309e8b/FLAG4a1fcfa9e [2021-08-27 15:58:02,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d921c04d/791e30827724438c8c07120f47309e8b [2021-08-27 15:58:02,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:58:02,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:58:02,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:02,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:58:02,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:58:02,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cada28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02, skipping insertion in model container [2021-08-27 15:58:02,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:58:02,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:58:02,429 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_product54.cil.c[3492,3505] [2021-08-27 15:58:02,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:02,533 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:58:02,559 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_product54.cil.c[3492,3505] [2021-08-27 15:58:02,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:02,623 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:58:02,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02 WrapperNode [2021-08-27 15:58:02,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:02,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:02,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:58:02,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:58:02,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:02,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:58:02,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:58:02,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:58:02,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:58:02,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:58:02,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:58:02,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:58:02,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (1/1) ... [2021-08-27 15:58:02,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:58:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:58:02,822 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 15:58:02,866 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 15:58:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:58:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:58:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:58:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:58:03,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:58:03,595 INFO L299 CfgBuilder]: Removed 278 assume(true) statements. [2021-08-27 15:58:03,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:03 BoogieIcfgContainer [2021-08-27 15:58:03,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:58:03,599 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:58:03,599 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:58:03,601 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:58:03,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:03,602 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:58:02" (1/3) ... [2021-08-27 15:58:03,603 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@159dc203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:03, skipping insertion in model container [2021-08-27 15:58:03,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:03,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:02" (2/3) ... [2021-08-27 15:58:03,604 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@159dc203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:03, skipping insertion in model container [2021-08-27 15:58:03,604 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:03,604 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:03" (3/3) ... [2021-08-27 15:58:03,605 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2021-08-27 15:58:03,632 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:58:03,632 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:58:03,632 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:58:03,632 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:58:03,632 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:58:03,632 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:58:03,633 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:58:03,633 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:58:03,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 15:58:03,682 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-08-27 15:58:03,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:03,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:03,688 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:03,688 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:03,688 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:58:03,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 15:58:03,694 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2021-08-27 15:58:03,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:03,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:03,695 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:03,695 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:03,698 INFO L791 eck$LassoCheckResult]: Stem: 170#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 69#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 132#L485true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 27#L493true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 179#L132true assume 0 != main_~tmp~0; 35#L105true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 100#L506-1true [2021-08-27 15:58:03,699 INFO L793 eck$LassoCheckResult]: Loop: 100#L506-1true assume !false; 31#L158true assume test_~splverifierCounter~0 < 4; 107#L159true test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 41#L167true assume !(0 != test_~tmp~1); 163#L167-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 82#L177true assume !(0 != test_~tmp___0~0); 84#L177-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 172#L187true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 105#L195-2true assume !(0 != ~pumpRunning~0); 52#L239true assume !(0 != ~systemActive~0); 90#L246true havoc __utac_acc__Specification1_spec__1_#t~ret35, __utac_acc__Specification1_spec__1_#t~ret36, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 120#L934-1true __utac_acc__Specification1_spec__1_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret35;havoc __utac_acc__Specification1_spec__1_#t~ret35; 164#L506true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 100#L506-1true [2021-08-27 15:58:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:58:03,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:03,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010435659] [2021-08-27 15:58:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:03,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:03,836 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:03,907 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1675526973, now seen corresponding path program 1 times [2021-08-27 15:58:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:03,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394997928] [2021-08-27 15:58:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:03,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:03,944 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 15:58:03,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:03,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394997928] [2021-08-27 15:58:03,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394997928] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:03,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:03,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:03,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958894973] [2021-08-27 15:58:03,948 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:03,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:03,958 INFO L87 Difference]: Start difference. First operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 15:58:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:03,996 INFO L93 Difference]: Finished difference Result 186 states and 275 transitions. [2021-08-27 15:58:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:03,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 275 transitions. [2021-08-27 15:58:04,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-08-27 15:58:04,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 179 states and 267 transitions. [2021-08-27 15:58:04,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 179 [2021-08-27 15:58:04,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 179 [2021-08-27 15:58:04,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 267 transitions. [2021-08-27 15:58:04,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:04,006 INFO L681 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 15:58:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states and 267 transitions. [2021-08-27 15:58:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-08-27 15:58:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 179 states have (on average 1.4916201117318435) internal successors, (267), 178 states have internal predecessors, (267), 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 15:58:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 267 transitions. [2021-08-27 15:58:04,027 INFO L704 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 15:58:04,027 INFO L587 BuchiCegarLoop]: Abstraction has 179 states and 267 transitions. [2021-08-27 15:58:04,027 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:58:04,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 267 transitions. [2021-08-27 15:58:04,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 119 [2021-08-27 15:58:04,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:04,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:04,029 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:04,029 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 15:58:04,029 INFO L791 eck$LassoCheckResult]: Stem: 557#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 488#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 489#L485 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 429#L493 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 430#L132 assume 0 != main_~tmp~0; 439#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 440#L506-1 [2021-08-27 15:58:04,029 INFO L793 eck$LassoCheckResult]: Loop: 440#L506-1 assume !false; 431#L158 assume test_~splverifierCounter~0 < 4; 432#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 450#L167 assume !(0 != test_~tmp~1); 452#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 499#L177 assume !(0 != test_~tmp___0~0); 500#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 504#L187 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 524#L195-2 assume !(0 != ~pumpRunning~0); 410#L239 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 387#L323 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 389#L297-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 470#L271-3 assume !(0 == ~pumpRunning~0); 447#L246 havoc __utac_acc__Specification1_spec__1_#t~ret35, __utac_acc__Specification1_spec__1_#t~ret36, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 510#L934-1 __utac_acc__Specification1_spec__1_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret35;havoc __utac_acc__Specification1_spec__1_#t~ret35; 534#L506 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 440#L506-1 [2021-08-27 15:58:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:58:04,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:04,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492779683] [2021-08-27 15:58:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:04,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,058 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,091 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1905346314, now seen corresponding path program 1 times [2021-08-27 15:58:04,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:04,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330352360] [2021-08-27 15:58:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:04,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:04,103 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 15:58:04,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:04,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330352360] [2021-08-27 15:58:04,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330352360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:04,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:04,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:04,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136288825] [2021-08-27 15:58:04,105 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:04,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:04,106 INFO L87 Difference]: Start difference. First operand 179 states and 267 transitions. cyclomatic complexity: 90 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:58:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:04,176 INFO L93 Difference]: Finished difference Result 184 states and 255 transitions. [2021-08-27 15:58:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:04,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 255 transitions. [2021-08-27 15:58:04,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 15:58:04,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 184 states and 255 transitions. [2021-08-27 15:58:04,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 184 [2021-08-27 15:58:04,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 184 [2021-08-27 15:58:04,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 255 transitions. [2021-08-27 15:58:04,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:04,180 INFO L681 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 15:58:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 255 transitions. [2021-08-27 15:58:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-08-27 15:58:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 184 states have (on average 1.3858695652173914) internal successors, (255), 183 states have internal predecessors, (255), 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 15:58:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 255 transitions. [2021-08-27 15:58:04,203 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 15:58:04,203 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 255 transitions. [2021-08-27 15:58:04,203 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:58:04,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 255 transitions. [2021-08-27 15:58:04,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 15:58:04,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:04,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:04,205 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:04,205 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:04,205 INFO L791 eck$LassoCheckResult]: Stem: 897#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 847#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 848#L485 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 789#L493 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 790#L132 assume 0 != main_~tmp~0; 802#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 803#L506-1 [2021-08-27 15:58:04,206 INFO L793 eck$LassoCheckResult]: Loop: 803#L506-1 assume !false; 796#L158 assume test_~splverifierCounter~0 < 4; 797#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 811#L167 assume !(0 != test_~tmp~1); 813#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 854#L177 assume !(0 != test_~tmp___0~0); 855#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 857#L187 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 871#L195-2 assume !(0 != ~pumpRunning~0); 825#L239 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 750#L323 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 751#L297-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 829#L271-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 870#L974-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 840#L979-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 760#L425-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 761#L425-11 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 764#L431-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 765#L275-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 810#L246 havoc __utac_acc__Specification1_spec__1_#t~ret35, __utac_acc__Specification1_spec__1_#t~ret36, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 923#L934-1 __utac_acc__Specification1_spec__1_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret35;havoc __utac_acc__Specification1_spec__1_#t~ret35; 921#L506 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 803#L506-1 [2021-08-27 15:58:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:58:04,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:04,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099141742] [2021-08-27 15:58:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:04,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,228 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash -659266398, now seen corresponding path program 1 times [2021-08-27 15:58:04,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:04,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376213032] [2021-08-27 15:58:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:04,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,260 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:04,265 INFO L82 PathProgramCache]: Analyzing trace with hash 594038728, now seen corresponding path program 1 times [2021-08-27 15:58:04,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:04,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603562725] [2021-08-27 15:58:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:04,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,286 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:04,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:47,762 WARN L207 SmtUtils]: Spent 43.24 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:59:31,442 WARN L207 SmtUtils]: Spent 20.35 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:59:31,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:59:31 BoogieIcfgContainer [2021-08-27 15:59:31,556 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:59:31,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:59:31,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:59:31,558 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:59:31,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:03" (3/4) ... [2021-08-27 15:59:31,561 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:59:31,638 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:59:31,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:59:31,639 INFO L168 Benchmark]: Toolchain (without parser) took 89350.35 ms. Allocated memory was 77.6 MB in the beginning and 134.2 MB in the end (delta: 56.6 MB). Free memory was 61.0 MB in the beginning and 60.4 MB in the end (delta: 540.6 kB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,645 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 77.6 MB. Free memory is still 59.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:59:31,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.19 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 54.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.54 ms. Allocated memory is still 77.6 MB. Free memory was 54.2 MB in the beginning and 49.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,646 INFO L168 Benchmark]: Boogie Preprocessor took 61.97 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 46.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,647 INFO L168 Benchmark]: RCFGBuilder took 836.56 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 46.1 MB in the beginning and 78.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,651 INFO L168 Benchmark]: BuchiAutomizer took 87957.77 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 78.3 MB in the beginning and 63.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 88.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,651 INFO L168 Benchmark]: Witness Printer took 81.15 ms. Allocated memory is still 134.2 MB. Free memory was 63.6 MB in the beginning and 60.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:31,653 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 77.6 MB. Free memory is still 59.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.19 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 54.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.54 ms. Allocated memory is still 77.6 MB. Free memory was 54.2 MB in the beginning and 49.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.97 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 46.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 836.56 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 46.1 MB in the beginning and 78.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87957.77 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 78.3 MB in the beginning and 63.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 88.6 MB. Max. memory is 16.1 GB. * Witness Printer took 81.15 ms. Allocated memory is still 134.2 MB. Free memory was 63.6 MB in the beginning and 60.4 MB in the end (delta: 3.1 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 184 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 87.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 87.6s. 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 35.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 475 SDtfs, 404 SDslu, 75 SDs, 0 SdLazy, 45 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.7ms 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: 157]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23851} State at position 1 is {NULL=0, NULL=0, NULL=23855, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3635d627=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5209f618=0, NULL=23851, NULL=0, NULL=23868, NULL=0, NULL=23859, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59bdf7f5=0, retValue_acc=0, NULL=0, NULL=23858, NULL=0, tmp___1=0, NULL=23872, NULL=23866, NULL=0, cleanupTimeShifts=4, tmp=0, retValue_acc=0, NULL=23877, NULL=0, NULL=0, waterLevel=1, NULL=23863, tmp___0=0, NULL=23867, \result=1, head=0, pumpRunning=0, tmp=1, NULL=23862, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@760f1bf0=0, \result=1, NULL=0, NULL=0, NULL=23873, NULL=0, NULL=0, tmp=1, NULL=23879, NULL=23869, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@412fa497=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58ed112a=0, head=0, tmp=0, NULL=23870, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@214639df=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@237bfc9f=72, NULL=23854, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5114806e=0, NULL=0, NULL=23857, NULL=23860, tmp___0=0, tmp=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=23856, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=23880, \result=0, NULL=23852, NULL=0, NULL=23865, NULL=0, retValue_acc=1, NULL=23861, NULL=23864, NULL=23878, retValue_acc=1, tmp___2=72, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=23871, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d6ce9e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e08e68e=0, NULL=23874, NULL=23853, NULL=23875} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L693] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L891] int waterLevel = 1; [L892] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L489] int retValue_acc ; [L492] retValue_acc = 1 [L493] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 Loop: [L157] COND TRUE 1 [L159] COND TRUE splverifierCounter < 4 [L165] tmp = __VERIFIER_nondet_int() [L167] COND FALSE !(\read(tmp)) [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L458] systemActive = 1 [L239] COND FALSE !(\read(pumpRunning)) [L246] COND TRUE \read(systemActive) [L320] int tmp ; [L323] COND FALSE !(\read(pumpRunning)) [L294] int tmp ; [L297] COND FALSE !(\read(pumpRunning)) [L268] int tmp ; [L271] COND TRUE ! pumpRunning [L417] int retValue_acc ; [L418] int tmp ; [L419] int tmp___0 ; [L971] int retValue_acc ; [L974] COND TRUE waterLevel < 2 [L975] retValue_acc = 1 [L976] return (retValue_acc); [L423] tmp = isHighWaterSensorDry() [L425] COND TRUE \read(tmp) [L426] tmp___0 = 0 [L430] retValue_acc = tmp___0 [L431] return (retValue_acc); [L273] tmp = isHighWaterLevel() [L275] COND FALSE !(\read(tmp)) [L499] int tmp ; [L500] int tmp___0 ; [L930] int retValue_acc ; [L933] retValue_acc = methaneLevelCritical [L934] return (retValue_acc); [L504] tmp = isMethaneLevelCritical() [L506] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:59:31,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...