./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product33.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_spec2_product33.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 b5076d679b37839f733750e31fc3798a3b068ae0 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:18:54,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:18:54,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:18:54,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:18:54,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:18:54,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:18:54,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:18:54,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:18:54,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:18:54,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:18:54,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:18:54,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:18:54,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:18:54,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:18:54,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:18:54,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:18:54,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:18:54,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:18:54,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:18:54,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:18:54,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:18:54,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:18:54,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:18:54,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:18:54,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:18:54,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:18:54,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:18:54,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:18:54,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:18:54,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:18:54,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:18:54,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:18:54,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:18:54,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:18:54,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:18:54,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:18:54,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:18:54,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:18:54,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:18:54,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:18:54,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:18:54,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:18:54,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:18:54,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:18:54,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:18:54,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:18:54,524 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:18:54,524 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:18:54,524 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:18:54,524 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:18:54,524 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:18:54,525 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:18:54,525 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:18:54,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:18:54,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:18:54,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:18:54,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:18:54,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:18:54,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:18:54,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:18:54,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:18:54,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:18:54,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:18:54,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:18:54,527 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:18:54,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:18:54,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:18:54,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:18:54,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:18:54,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:18:54,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:18:54,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:18:54,529 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:18:54,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5076d679b37839f733750e31fc3798a3b068ae0 [2021-07-06 20:18:54,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:18:54,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:18:54,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:18:54,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:18:54,780 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:18:54,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-07-06 20:18:54,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1085e0b4/1848eed083c04c1bbf3cb79dc1fbb4d3/FLAGfc1bec72f [2021-07-06 20:18:55,157 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:18:55,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-07-06 20:18:55,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1085e0b4/1848eed083c04c1bbf3cb79dc1fbb4d3/FLAGfc1bec72f [2021-07-06 20:18:55,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1085e0b4/1848eed083c04c1bbf3cb79dc1fbb4d3 [2021-07-06 20:18:55,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:18:55,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:18:55,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:18:55,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:18:55,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:18:55,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55, skipping insertion in model container [2021-07-06 20:18:55,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:18:55,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:18:55,760 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_spec2_product33.cil.c[4518,4531] [2021-07-06 20:18:55,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:18:55,834 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:18:55,861 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_spec2_product33.cil.c[4518,4531] [2021-07-06 20:18:55,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:18:55,921 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:18:55,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55 WrapperNode [2021-07-06 20:18:55,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:18:55,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:18:55,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:18:55,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:18:55,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:18:55,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:18:55,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:18:55,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:18:55,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:18:55,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:18:55,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:18:55,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:18:55,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (1/1) ... [2021-07-06 20:18:55,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:18:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:18:55,995 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 20:18:56,041 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 20:18:56,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:18:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:18:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:18:56,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:18:56,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:18:56,542 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-07-06 20:18:56,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:56 BoogieIcfgContainer [2021-07-06 20:18:56,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:18:56,543 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:18:56,543 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:18:56,545 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:18:56,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:56,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:18:55" (1/3) ... [2021-07-06 20:18:56,546 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d00d9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:18:56, skipping insertion in model container [2021-07-06 20:18:56,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:56,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:55" (2/3) ... [2021-07-06 20:18:56,547 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d00d9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:18:56, skipping insertion in model container [2021-07-06 20:18:56,547 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:56,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:56" (3/3) ... [2021-07-06 20:18:56,548 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2021-07-06 20:18:56,584 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:18:56,584 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:18:56,584 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:18:56,584 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:18:56,584 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:18:56,584 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:18:56,584 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:18:56,584 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:18:56,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 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 20:18:56,607 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-07-06 20:18:56,607 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:56,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:56,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:56,612 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:56,612 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:18:56,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 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 20:18:56,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-07-06 20:18:56,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:56,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:56,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:56,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:56,619 INFO L791 eck$LassoCheckResult]: Stem: 36#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0; 16#L-1true havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~5, main_~tmp~0;havoc main_~retValue_acc~5;havoc main_~tmp~0; 59#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 70#L75true main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 55#L268true assume 0 != main_~tmp~0; 30#L242true ~methAndRunningLastTime~0 := 0; 65#L884true havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 67#L895-1true [2021-07-06 20:18:56,619 INFO L793 eck$LassoCheckResult]: Loop: 67#L895-1true assume !false; 48#L458true assume test_~splverifierCounter~0 < 4; 62#L459true test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 68#L467true assume !(0 != test_~tmp~3); 73#L467-1true test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 53#L477true assume !(0 != test_~tmp___0~1); 56#L477-1true test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 38#L487true assume 0 != test_~tmp___2~0; 13#L493-2true assume !(0 != ~pumpRunning~0); 80#L302true assume !(0 != ~systemActive~0); 63#L309true havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 77#L130true __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 14#L895true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 67#L895-1true [2021-07-06 20:18:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:18:56,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:56,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608571210] [2021-07-06 20:18:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:56,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:56,815 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:56,864 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:56,885 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2753162, now seen corresponding path program 1 times [2021-07-06 20:18:56,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:56,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941654974] [2021-07-06 20:18:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:56,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:56,892 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:56,894 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:56,902 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:56,903 INFO L82 PathProgramCache]: Analyzing trace with hash 836049668, now seen corresponding path program 1 times [2021-07-06 20:18:56,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:56,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142604616] [2021-07-06 20:18:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:56,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:18:56,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:56,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:18:56,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:56,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:18:56,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:56,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:18:57,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:18:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:18:57,008 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 20:18:57,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:18:57,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142604616] [2021-07-06 20:18:57,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142604616] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:18:57,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:18:57,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:18:57,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122706265] [2021-07-06 20:18:57,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-07-06 20:18:57,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:18:57,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:18:57,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:18:57,094 INFO L87 Difference]: Start difference. First operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 20:18:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:18:57,217 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2021-07-06 20:18:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 20:18:57,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 110 transitions. [2021-07-06 20:18:57,221 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-07-06 20:18:57,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 72 states and 103 transitions. [2021-07-06 20:18:57,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2021-07-06 20:18:57,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2021-07-06 20:18:57,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 103 transitions. [2021-07-06 20:18:57,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:18:57,228 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-07-06 20:18:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 103 transitions. [2021-07-06 20:18:57,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-07-06 20:18:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 71 states have internal predecessors, (103), 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 20:18:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2021-07-06 20:18:57,261 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-07-06 20:18:57,261 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-07-06 20:18:57,261 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:18:57,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 103 transitions. [2021-07-06 20:18:57,263 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-07-06 20:18:57,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:57,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:57,264 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:57,264 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:57,264 INFO L791 eck$LassoCheckResult]: Stem: 219#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0; 203#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~5, main_~tmp~0;havoc main_~retValue_acc~5;havoc main_~tmp~0; 204#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 240#L75 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 239#L268 assume 0 != main_~tmp~0; 214#L242 ~methAndRunningLastTime~0 := 0; 215#L884 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 185#L895-1 [2021-07-06 20:18:57,264 INFO L793 eck$LassoCheckResult]: Loop: 185#L895-1 assume !false; 233#L458 assume test_~splverifierCounter~0 < 4; 234#L459 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 242#L467 assume !(0 != test_~tmp~3); 245#L467-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 238#L477 assume !(0 != test_~tmp___0~1); 218#L477-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 220#L487 assume 0 != test_~tmp___2~0; 189#L493-2 assume !(0 != ~pumpRunning~0); 196#L302 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 224#L334 assume !(0 == ~pumpRunning~0); 225#L309 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 243#L130 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 198#L895 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 185#L895-1 [2021-07-06 20:18:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:18:57,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:57,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973634252] [2021-07-06 20:18:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:57,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,322 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,355 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:57,376 INFO L82 PathProgramCache]: Analyzing trace with hash 53737313, now seen corresponding path program 1 times [2021-07-06 20:18:57,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:57,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771978690] [2021-07-06 20:18:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:57,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:18:57,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:18:57,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:18:57,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:18:57,393 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 20:18:57,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:18:57,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771978690] [2021-07-06 20:18:57,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771978690] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:18:57,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:18:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:18:57,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515710029] [2021-07-06 20:18:57,395 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:18:57,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:18:57,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:18:57,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:18:57,398 INFO L87 Difference]: Start difference. First operand 72 states and 103 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:18:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:18:57,461 INFO L93 Difference]: Finished difference Result 116 states and 160 transitions. [2021-07-06 20:18:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:18:57,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 160 transitions. [2021-07-06 20:18:57,469 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-07-06 20:18:57,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 160 transitions. [2021-07-06 20:18:57,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2021-07-06 20:18:57,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-07-06 20:18:57,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 160 transitions. [2021-07-06 20:18:57,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:18:57,476 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-07-06 20:18:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 160 transitions. [2021-07-06 20:18:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-07-06 20:18:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 115 states have internal predecessors, (160), 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 20:18:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2021-07-06 20:18:57,490 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-07-06 20:18:57,490 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-07-06 20:18:57,490 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:18:57,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 160 transitions. [2021-07-06 20:18:57,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-07-06 20:18:57,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:57,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:57,493 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:57,493 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:57,494 INFO L791 eck$LassoCheckResult]: Stem: 411#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0; 396#L-1 havoc main_#res;havoc main_#t~ret18, main_~retValue_acc~5, main_~tmp~0;havoc main_~retValue_acc~5;havoc main_~tmp~0; 397#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 438#L75 main_#t~ret18 := valid_product_#res;main_~tmp~0 := main_#t~ret18;havoc main_#t~ret18; 434#L268 assume 0 != main_~tmp~0; 406#L242 ~methAndRunningLastTime~0 := 0; 407#L884 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 379#L895-1 [2021-07-06 20:18:57,494 INFO L793 eck$LassoCheckResult]: Loop: 379#L895-1 assume !false; 424#L458 assume test_~splverifierCounter~0 < 4; 425#L459 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 441#L467 assume !(0 != test_~tmp~3); 444#L467-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 431#L477 assume !(0 != test_~tmp___0~1); 410#L477-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 412#L487 assume 0 != test_~tmp___2~0; 383#L493-2 assume !(0 != ~pumpRunning~0); 390#L302 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 416#L334 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 417#L170 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 370#L175 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 371#L436 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 408#L436-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 402#L442 processEnvironment_#t~ret19 := isHighWaterLevel_#res;processEnvironment_~tmp~1 := processEnvironment_#t~ret19;havoc processEnvironment_#t~ret19; 403#L338 assume !(0 != processEnvironment_~tmp~1); 433#L309 havoc __utac_acc__Specification2_spec__2_#t~ret77, __utac_acc__Specification2_spec__2_#t~ret78, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 442#L130 __utac_acc__Specification2_spec__2_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret77;havoc __utac_acc__Specification2_spec__2_#t~ret77; 391#L895 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 379#L895-1 [2021-07-06 20:18:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:18:57,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:57,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717287697] [2021-07-06 20:18:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:57,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,525 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,569 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash 851049645, now seen corresponding path program 1 times [2021-07-06 20:18:57,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:57,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497537091] [2021-07-06 20:18:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:57,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,583 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,587 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:57,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2016626419, now seen corresponding path program 1 times [2021-07-06 20:18:57,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:57,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241912945] [2021-07-06 20:18:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:57,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,613 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:57,652 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:57,664 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:57,777 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-07-06 20:18:57,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:57,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-07-06 20:19:37,608 WARN L205 SmtUtils]: Spent 39.77 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:19:37,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:19:37,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:19:56,889 WARN L205 SmtUtils]: Spent 19.21 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:19:57,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:19:57 BoogieIcfgContainer [2021-07-06 20:19:57,009 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:19:57,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:19:57,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:19:57,012 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:19:57,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:56" (3/4) ... [2021-07-06 20:19:57,014 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:19:57,047 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:19:57,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:19:57,047 INFO L168 Benchmark]: Toolchain (without parser) took 61487.35 ms. Allocated memory was 60.8 MB in the beginning and 109.1 MB in the end (delta: 48.2 MB). Free memory was 40.0 MB in the beginning and 34.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,048 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.4 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:19:57,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 34.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.00 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:19:57,050 INFO L168 Benchmark]: Boogie Preprocessor took 19.20 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 29.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,051 INFO L168 Benchmark]: RCFGBuilder took 565.19 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 36.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,051 INFO L168 Benchmark]: BuchiAutomizer took 60468.39 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 36.6 MB in the beginning and 37.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,051 INFO L168 Benchmark]: Witness Printer took 34.90 ms. Allocated memory is still 109.1 MB. Free memory was 37.7 MB in the beginning and 34.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:57,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.4 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 34.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.00 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.20 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 29.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 565.19 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 36.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 60468.39 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 36.6 MB in the beginning and 37.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * Witness Printer took 34.90 ms. Allocated memory is still 109.1 MB. Free memory was 37.7 MB in the beginning and 34.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 116 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 60.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 60.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 39.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 116 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 216 SDtfs, 407 SDslu, 56 SDs, 0 SdLazy, 29 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 457]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=9368} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=9368, NULL=32264, NULL=0, NULL=32278, NULL=32268, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=32277, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b2f899b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11a8a2b2=0, NULL=32244, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58edace4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28b41616=69, waterLevel=1, NULL=0, NULL=32276, \result=1, head=0, pumpRunning=0, tmp=1, NULL=32262, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=32272, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=32243, tmp___0=0, NULL=9370, methAndRunningLastTime=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43b2a823=0, NULL=32263, NULL=32280, tmp=0, head=0, NULL=0, NULL=0, NULL=32259, NULL=32269, NULL=32260, NULL=32273, NULL=32275, NULL=0, retValue_acc=0, NULL=0, NULL=32270, NULL=32279, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e3edb41=0, NULL=0, NULL=32261, NULL=32271, NULL=0, systemActive=1, NULL=32267, NULL=0, \result=0, retValue_acc=0, NULL=32258, \result=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e720398=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29bc556f=0, NULL=9369, NULL=32274, retValue_acc=1, tmp___2=69, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=32281, NULL=32265, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1389d1af=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32266, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L294] int pumpRunning = 0; [L295] int systemActive = 1; [L681] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int methAndRunningLastTime ; [L259] int retValue_acc ; [L260] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L266] tmp = valid_product() [L268] COND TRUE \read(tmp) [L883] methAndRunningLastTime = 0 [L448] int splverifierCounter ; [L449] int tmp ; [L450] int tmp___0 ; [L451] int tmp___1 ; [L452] int tmp___2 ; [L455] splverifierCounter = 0 Loop: [L457] COND TRUE 1 [L459] COND TRUE splverifierCounter < 4 [L465] tmp = __VERIFIER_nondet_int() [L467] COND FALSE !(\read(tmp)) [L475] tmp___0 = __VERIFIER_nondet_int() [L477] COND FALSE !(\read(tmp___0)) [L485] tmp___2 = __VERIFIER_nondet_int() [L487] COND TRUE \read(tmp___2) [L302] COND FALSE !(\read(pumpRunning)) [L309] COND TRUE \read(systemActive) [L331] int tmp ; [L334] COND TRUE ! pumpRunning [L428] int retValue_acc ; [L429] int tmp ; [L430] int tmp___0 ; [L167] int retValue_acc ; [L170] COND TRUE waterLevel < 2 [L171] retValue_acc = 1 [L172] return (retValue_acc); [L434] tmp = isHighWaterSensorDry() [L436] COND TRUE \read(tmp) [L437] tmp___0 = 0 [L441] retValue_acc = tmp___0 [L442] return (retValue_acc); [L336] tmp = isHighWaterLevel() [L338] COND FALSE !(\read(tmp)) [L888] int tmp ; [L889] int tmp___0 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); [L893] tmp = isMethaneLevelCritical() [L895] COND FALSE !(\read(tmp)) [L911] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:19:57,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...