./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product52.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 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:25:45,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:25:45,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:25:45,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:25:45,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:25:45,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:25:45,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:25:45,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:25:45,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:25:45,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:25:45,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:25:45,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:25:45,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:25:45,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:25:45,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:25:45,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:25:45,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:25:45,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:25:45,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:25:45,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:25:45,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:25:45,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:25:45,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:25:45,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:25:45,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:25:45,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:25:45,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:25:45,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:25:45,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:25:45,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:25:45,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:25:45,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:25:45,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:25:45,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:25:45,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:25:45,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:25:45,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:25:45,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:25:45,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:25:45,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:25:45,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:25:45,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:25:45,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:25:45,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:25:45,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:25:45,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:25:45,690 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:25:45,691 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:25:45,691 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:25:45,691 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:25:45,691 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:25:45,691 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:25:45,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:25:45,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:25:45,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:25:45,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:25:45,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:25:45,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:25:45,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:25:45,694 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:25:45,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb [2021-07-06 20:25:45,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:25:45,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:25:45,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:25:45,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:25:45,952 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:25:45,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-07-06 20:25:45,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dffe33d/f93e58aa63f24c83907492f0b95fe614/FLAG00edf4e4c [2021-07-06 20:25:46,360 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:25:46,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2021-07-06 20:25:46,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dffe33d/f93e58aa63f24c83907492f0b95fe614/FLAG00edf4e4c [2021-07-06 20:25:46,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84dffe33d/f93e58aa63f24c83907492f0b95fe614 [2021-07-06 20:25:46,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:25:46,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:25:46,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:25:46,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:25:46,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:25:46,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:25:46" (1/1) ... [2021-07-06 20:25:46,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6bdfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:46, skipping insertion in model container [2021-07-06 20:25:46,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:25:46" (1/1) ... [2021-07-06 20:25:46,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:25:46,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:25:47,047 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[16932,16945] [2021-07-06 20:25:47,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:25:47,074 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:25:47,136 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[16932,16945] [2021-07-06 20:25:47,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:25:47,158 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:25:47,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47 WrapperNode [2021-07-06 20:25:47,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:25:47,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:25:47,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:25:47,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:25:47,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:25:47,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:25:47,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:25:47,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:25:47,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:25:47,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:25:47,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:25:47,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:25:47,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (1/1) ... [2021-07-06 20:25:47,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:25:47,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:25:47,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:25:47,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:25:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:25:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:25:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:25:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:25:47,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:25:47,994 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-07-06 20:25:47,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:47 BoogieIcfgContainer [2021-07-06 20:25:47,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:25:47,997 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:25:47,997 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:25:47,999 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:25:47,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:48,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:25:46" (1/3) ... [2021-07-06 20:25:48,000 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4850e12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:48, skipping insertion in model container [2021-07-06 20:25:48,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:48,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:25:47" (2/3) ... [2021-07-06 20:25:48,001 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4850e12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:25:48, skipping insertion in model container [2021-07-06 20:25:48,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:25:48,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:47" (3/3) ... [2021-07-06 20:25:48,002 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-07-06 20:25:48,034 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:25:48,034 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:25:48,034 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:25:48,034 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:25:48,034 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:25:48,034 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:25:48,035 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:25:48,035 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:25:48,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:48,066 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-07-06 20:25:48,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:48,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:48,072 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,072 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,072 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:25:48,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:48,079 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-07-06 20:25:48,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:48,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:48,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,079 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,087 INFO L791 eck$LassoCheckResult]: Stem: 96#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 11#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 36#L885true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 43#L893true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 81#L980true assume 0 != main_~tmp~9; 114#L957true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 68#L61-1true [2021-07-06 20:25:48,089 INFO L793 eck$LassoCheckResult]: Loop: 68#L61-1true assume !false; 79#L793true assume test_~splverifierCounter~0 < 4; 53#L794true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 58#L802true assume !(0 != test_~tmp~8); 60#L802-1true test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 89#L812true assume !(0 != test_~tmp___0~3); 91#L812-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 7#L822true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 15#L830-1true assume !(0 != ~pumpRunning~0); 57#L568true assume !(0 != ~systemActive~0); 103#L575true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 107#L129true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 98#L55true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 68#L61-1true [2021-07-06 20:25:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,093 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:25:48,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995744499] [2021-07-06 20:25:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,302 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,353 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1670232129, now seen corresponding path program 1 times [2021-07-06 20:25:48,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050786447] [2021-07-06 20:25:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:48,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:48,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:48,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:48,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:48,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050786447] [2021-07-06 20:25:48,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050786447] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:48,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:48,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:48,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278203523] [2021-07-06 20:25:48,447 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:48,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:48,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:25:48,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:25:48,457 INFO L87 Difference]: Start difference. First operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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) [2021-07-06 20:25:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:48,493 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2021-07-06 20:25:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:25:48,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 238 states and 348 transitions. [2021-07-06 20:25:48,498 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2021-07-06 20:25:48,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 238 states to 224 states and 333 transitions. [2021-07-06 20:25:48,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2021-07-06 20:25:48,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2021-07-06 20:25:48,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2021-07-06 20:25:48,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:48,509 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-07-06 20:25:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2021-07-06 20:25:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-07-06 20:25:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-07-06 20:25:48,534 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-07-06 20:25:48,534 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-07-06 20:25:48,535 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:25:48,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-07-06 20:25:48,536 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-07-06 20:25:48,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:48,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:48,537 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,537 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,537 INFO L791 eck$LassoCheckResult]: Stem: 493#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 379#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 380#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 420#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 432#L980 assume 0 != main_~tmp~9; 483#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 504#L61-1 [2021-07-06 20:25:48,537 INFO L793 eck$LassoCheckResult]: Loop: 504#L61-1 assume !false; 523#L793 assume test_~splverifierCounter~0 < 4; 522#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 521#L802 assume !(0 != test_~tmp~8); 519#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 518#L812 assume !(0 != test_~tmp___0~3); 516#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 515#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 376#L830-1 assume !(0 != ~pumpRunning~0); 457#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 458#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 531#L600-1 assume !(0 == ~pumpRunning~0); 530#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 529#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 524#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 504#L61-1 [2021-07-06 20:25:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,538 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:25:48,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308371468] [2021-07-06 20:25:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,583 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,629 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,648 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1415980259, now seen corresponding path program 1 times [2021-07-06 20:25:48,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281065134] [2021-07-06 20:25:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:48,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:48,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:48,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:25:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:48,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:48,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281065134] [2021-07-06 20:25:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281065134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:48,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:48,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665199907] [2021-07-06 20:25:48,673 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:25:48,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:48,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:25:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:25:48,675 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:48,779 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2021-07-06 20:25:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:25:48,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 448 transitions. [2021-07-06 20:25:48,782 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-07-06 20:25:48,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 448 transitions. [2021-07-06 20:25:48,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2021-07-06 20:25:48,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2021-07-06 20:25:48,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 448 transitions. [2021-07-06 20:25:48,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:48,790 INFO L681 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-07-06 20:25:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 448 transitions. [2021-07-06 20:25:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-07-06 20:25:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 317 states have (on average 1.413249211356467) internal successors, (448), 316 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2021-07-06 20:25:48,806 INFO L704 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-07-06 20:25:48,806 INFO L587 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2021-07-06 20:25:48,806 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:25:48,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 448 transitions. [2021-07-06 20:25:48,807 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2021-07-06 20:25:48,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:48,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:48,810 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:48,810 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] [2021-07-06 20:25:48,810 INFO L791 eck$LassoCheckResult]: Stem: 1028#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 924#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 925#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 967#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 978#L980 assume 0 != main_~tmp~9; 1021#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 933#L61-1 [2021-07-06 20:25:48,811 INFO L793 eck$LassoCheckResult]: Loop: 933#L61-1 assume !false; 1013#L793 assume test_~splverifierCounter~0 < 4; 994#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 995#L802 assume !(0 != test_~tmp~8); 1003#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 1006#L812 assume !(0 != test_~tmp___0~3); 1016#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 920#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 921#L830-1 assume !(0 != ~pumpRunning~0); 931#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 981#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 982#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 965#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 966#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 968#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 929#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 930#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 990#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 987#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1037#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1030#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 933#L61-1 [2021-07-06 20:25:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:25:48,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347301076] [2021-07-06 20:25:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,840 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,886 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,893 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,894 INFO L82 PathProgramCache]: Analyzing trace with hash 890409545, now seen corresponding path program 1 times [2021-07-06 20:25:48,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227693784] [2021-07-06 20:25:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,899 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:48,902 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:48,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1346480739, now seen corresponding path program 1 times [2021-07-06 20:25:48,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:48,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333557849] [2021-07-06 20:25:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:48,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:25:48,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:48,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:48,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:25:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:25:48,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:25:48,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333557849] [2021-07-06 20:25:48,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333557849] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:25:48,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:25:48,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:25:48,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197385652] [2021-07-06 20:25:49,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:49,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-07-06 20:25:49,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:25:49,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:25:49,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:25:49,092 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. cyclomatic complexity: 134 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:25:49,160 INFO L93 Difference]: Finished difference Result 1101 states and 1566 transitions. [2021-07-06 20:25:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:25:49,160 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1101 states and 1566 transitions. [2021-07-06 20:25:49,165 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 834 [2021-07-06 20:25:49,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1101 states to 1101 states and 1566 transitions. [2021-07-06 20:25:49,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1101 [2021-07-06 20:25:49,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1101 [2021-07-06 20:25:49,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1101 states and 1566 transitions. [2021-07-06 20:25:49,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:25:49,172 INFO L681 BuchiCegarLoop]: Abstraction has 1101 states and 1566 transitions. [2021-07-06 20:25:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states and 1566 transitions. [2021-07-06 20:25:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 628. [2021-07-06 20:25:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 628 states have (on average 1.39171974522293) internal successors, (874), 627 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:25:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2021-07-06 20:25:49,184 INFO L704 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-07-06 20:25:49,184 INFO L587 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2021-07-06 20:25:49,184 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:25:49,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 874 transitions. [2021-07-06 20:25:49,186 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2021-07-06 20:25:49,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:25:49,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:25:49,186 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:25:49,186 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, 1] [2021-07-06 20:25:49,187 INFO L791 eck$LassoCheckResult]: Stem: 2476#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2362#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 2363#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 2404#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 2417#L980 assume 0 != main_~tmp~9; 2464#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2373#L61-1 [2021-07-06 20:25:49,187 INFO L793 eck$LassoCheckResult]: Loop: 2373#L61-1 assume !false; 2451#L793 assume test_~splverifierCounter~0 < 4; 2432#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 2433#L802 assume !(0 != test_~tmp~8); 2440#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 2443#L812 assume !(0 != test_~tmp___0~3); 2962#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2945#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2937#L830-1 assume !(0 != ~pumpRunning~0); 2931#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2917#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2914#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2913#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2912#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2910#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 2908#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2906#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 2854#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2483#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2484#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2479#L55 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2480#L161 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2452#L61 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2373#L61-1 [2021-07-06 20:25:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-07-06 20:25:49,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:49,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658016070] [2021-07-06 20:25:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:49,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,204 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,219 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,233 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:49,233 INFO L82 PathProgramCache]: Analyzing trace with hash 985089051, now seen corresponding path program 1 times [2021-07-06 20:25:49,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:49,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394794060] [2021-07-06 20:25:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:49,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,237 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,239 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:25:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1182842293, now seen corresponding path program 1 times [2021-07-06 20:25:49,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:25:49,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161832972] [2021-07-06 20:25:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:25:49,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:25:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,259 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:25:49,285 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:25:49,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:25:49,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:25:49,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-07-06 20:26:31,007 WARN L205 SmtUtils]: Spent 41.55 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:26:31,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:31,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:26:51,242 WARN L205 SmtUtils]: Spent 20.18 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:26:51,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:26:51 BoogieIcfgContainer [2021-07-06 20:26:51,332 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:26:51,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:26:51,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:26:51,345 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:26:51,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:25:47" (3/4) ... [2021-07-06 20:26:51,350 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:26:51,410 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:26:51,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:26:51,411 INFO L168 Benchmark]: Toolchain (without parser) took 64625.67 ms. Allocated memory was 56.6 MB in the beginning and 113.2 MB in the end (delta: 56.6 MB). Free memory was 34.2 MB in the beginning and 51.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,411 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 56.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:26:51,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.60 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.0 MB in the beginning and 51.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.09 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 47.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,416 INFO L168 Benchmark]: Boogie Preprocessor took 48.32 ms. Allocated memory is still 77.6 MB. Free memory was 47.6 MB in the beginning and 44.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,416 INFO L168 Benchmark]: RCFGBuilder took 723.07 ms. Allocated memory is still 77.6 MB. Free memory was 44.7 MB in the beginning and 45.7 MB in the end (delta: -984.7 kB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,416 INFO L168 Benchmark]: BuchiAutomizer took 63335.16 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 45.3 MB in the beginning and 54.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,417 INFO L168 Benchmark]: Witness Printer took 66.11 ms. Allocated memory is still 113.2 MB. Free memory was 54.4 MB in the beginning and 51.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:26:51,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 56.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.60 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.0 MB in the beginning and 51.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.09 ms. Allocated memory is still 77.6 MB. Free memory was 51.0 MB in the beginning and 47.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.32 ms. Allocated memory is still 77.6 MB. Free memory was 47.6 MB in the beginning and 44.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 723.07 ms. Allocated memory is still 77.6 MB. Free memory was 44.7 MB in the beginning and 45.7 MB in the end (delta: -984.7 kB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 63335.16 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 45.3 MB in the beginning and 54.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.11 ms. Allocated memory is still 113.2 MB. Free memory was 54.4 MB in the beginning and 51.3 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 628 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 63.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 62.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 43.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 628 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 608 SDtfs, 985 SDslu, 1058 SDs, 0 SdLazy, 85 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 792]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12748} State at position 1 is {NULL=0, NULL=0, NULL=12748, NULL=12761, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@450a0ec5=0, NULL=12772, methaneLevelCritical=0, retValue_acc=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=12768, tmp=0, cleanupTimeShifts=4, NULL=12776, NULL=12769, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a51c1fe=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, retValue_acc=1, \result=1, NULL=12757, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=12763, NULL=12773, head=0, tmp=0, tmp=1, NULL=0, NULL=12775, NULL=12751, NULL=12752, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@326690b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60287a29=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@611dd277=0, NULL=0, NULL=12756, NULL=12767, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@195464ae=0, NULL=0, NULL=0, NULL=12765, NULL=0, tmp___0=1, tmp=0, NULL=12774, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@754f9523=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@977acd4=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fccf99b=0, NULL=0, systemActive=1, NULL=12760, \result=1, \result=0, NULL=12764, NULL=0, NULL=0, NULL=12750, retValue_acc=0, NULL=12753, \result=0, NULL=12762, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@312d6ab7=0, NULL=12755, NULL=12759, NULL=12749, tmp___2=76, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=12770, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5fd9bb5d=0, NULL=12771, NULL=12766, NULL=0, NULL=0, NULL=0, NULL=12758, NULL=12754} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L561] int pumpRunning = 0; [L562] int systemActive = 1; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L889] int retValue_acc ; [L892] retValue_acc = 1 [L893] return (retValue_acc); [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 Loop: [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND FALSE !(\read(tmp)) [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND TRUE \read(tmp___2) [L776] systemActive = 1 [L568] COND FALSE !(\read(pumpRunning)) [L575] COND TRUE \read(systemActive) [L623] int tmp ; [L626] COND FALSE !(\read(pumpRunning)) [L597] int tmp ; [L600] COND TRUE ! pumpRunning [L720] int retValue_acc ; [L721] int tmp ; [L722] int tmp___0 ; [L166] int retValue_acc ; [L169] COND TRUE waterLevel < 2 [L170] retValue_acc = 1 [L171] return (retValue_acc); [L726] tmp = isHighWaterSensorDry() [L728] COND TRUE \read(tmp) [L729] tmp___0 = 0 [L733] retValue_acc = tmp___0 [L734] return (retValue_acc); [L602] tmp = isHighWaterLevel() [L604] COND FALSE !(\read(tmp)) [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L59] tmp___0 = getWaterLevel() [L61] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:26:51,462 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...