./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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_product50.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 f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:18:19,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:18:19,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:18:19,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:18:19,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:18:19,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:18:19,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:18:19,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:18:19,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:18:19,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:18:19,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:18:19,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:18:19,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:18:19,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:18:19,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:18:19,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:18:19,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:18:19,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:18:19,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:18:19,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:18:19,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:18:19,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:18:19,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:18:19,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:18:19,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:18:19,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:18:19,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:18:19,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:18:19,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:18:19,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:18:19,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:18:19,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:18:19,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:18:19,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:18:19,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:18:19,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:18:19,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:18:19,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:18:19,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:18:19,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:18:19,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:18:19,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:18:19,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:18:19,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:18:19,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:18:19,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:18:19,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:18:19,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:18:19,633 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:18:19,636 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:18:19,636 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:18:19,636 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:18:19,637 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:18:19,637 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:18:19,638 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:18:19,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:18:19,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:18:19,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:18:19,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:18:19,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:18:19,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:18:19,640 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:18:19,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:18:19,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:18:19,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:18:19,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:18:19,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:18:19,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:18:19,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:18:19,642 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:18:19,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf [2021-12-15 17:18:19,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:18:19,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:18:19,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:18:19,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:18:19,857 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:18:19,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2021-12-15 17:18:19,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f046fa7/869c89eea6924f9ea0348f187aeaa115/FLAG297f1ff97 [2021-12-15 17:18:20,332 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:18:20,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2021-12-15 17:18:20,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f046fa7/869c89eea6924f9ea0348f187aeaa115/FLAG297f1ff97 [2021-12-15 17:18:20,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f046fa7/869c89eea6924f9ea0348f187aeaa115 [2021-12-15 17:18:20,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:18:20,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:18:20,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:20,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:18:20,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:18:20,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210b7b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20, skipping insertion in model container [2021-12-15 17:18:20,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:18:20,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:18:20,669 WARN L230 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_product50.cil.c[18939,18952] [2021-12-15 17:18:20,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:20,680 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:18:20,742 WARN L230 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_product50.cil.c[18939,18952] [2021-12-15 17:18:20,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:20,762 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:18:20,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20 WrapperNode [2021-12-15 17:18:20,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:20,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:20,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:18:20,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:18:20,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,829 INFO L137 Inliner]: procedures = 57, calls = 156, calls flagged for inlining = 53, calls inlined = 79, statements flattened = 618 [2021-12-15 17:18:20,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:20,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:18:20,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:18:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:18:20,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:18:20,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:18:20,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:18:20,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:18:20,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:18:20,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:18:20,912 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) [2021-12-15 17:18:20,920 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 [2021-12-15 17:18:20,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:18:20,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:18:20,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:18:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:18:20,992 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:18:20,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:18:21,326 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:18:21,331 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:18:21,332 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 17:18:21,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:21 BoogieIcfgContainer [2021-12-15 17:18:21,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:18:21,334 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:18:21,334 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:18:21,336 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:18:21,337 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:21,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:18:20" (1/3) ... [2021-12-15 17:18:21,338 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ba8b9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:21, skipping insertion in model container [2021-12-15 17:18:21,338 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:21,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (2/3) ... [2021-12-15 17:18:21,339 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ba8b9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:21, skipping insertion in model container [2021-12-15 17:18:21,339 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:21,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:21" (3/3) ... [2021-12-15 17:18:21,340 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2021-12-15 17:18:21,378 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:18:21,378 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:18:21,378 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:18:21,378 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:18:21,378 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:18:21,379 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:18:21,379 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:18:21,379 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:18:21,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 states have internal predecessors, (230), 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) [2021-12-15 17:18:21,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 107 [2021-12-15 17:18:21,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,434 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,434 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,434 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:18:21,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 states have internal predecessors, (230), 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) [2021-12-15 17:18:21,450 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 107 [2021-12-15 17:18:21,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,464 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,464 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,475 INFO L791 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 49#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_~retValue_acc~2#1, main_~tmp~0#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 69#L75true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 156#L68true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 30#L83true main_#t~ret5#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret5#1;havoc main_#t~ret5#1; 62#L177true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 100#L151true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 132#L200true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 121#L559-2true [2021-12-15 17:18:21,476 INFO L793 eck$LassoCheckResult]: Loop: 121#L559-2true assume !false; 27#L560true assume test_~splverifierCounter~0#1 < 4; 81#L561true test_~tmp~6#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 46#L569true assume !(0 != test_~tmp~6#1); 94#L569-2true test_~tmp___0~3#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 12#L579true assume !(0 != test_~tmp___0~3#1); 55#L579-2true test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 15#L589true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 28#L545true assume { :end_inline_startSystem } true; 67#L597-2true assume { :begin_inline_timeShift } true; 80#L351true assume !(0 != ~pumpRunning~0); 166#L351-2true assume !(0 != ~systemActive~0); 59#L358-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret6#1, __utac_acc__Specification2_spec__2_#t~ret7#1, __utac_acc__Specification2_spec__2_~tmp~1#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~1#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 19#L281true __utac_acc__Specification2_spec__2_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~1#1 := __utac_acc__Specification2_spec__2_#t~ret6#1;havoc __utac_acc__Specification2_spec__2_#t~ret6#1; 128#L211true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1#1);~methAndRunningLastTime~0 := 0; 140#L211-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 138#L368true assume { :end_inline_timeShift } true; 121#L559-2true [2021-12-15 17:18:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-15 17:18:21,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454935976] [2021-12-15 17:18:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash -57204055, now seen corresponding path program 1 times [2021-12-15 17:18:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710339006] [2021-12-15 17:18:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:21,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:21,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710339006] [2021-12-15 17:18:21,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710339006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:21,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:21,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:21,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085412296] [2021-12-15 17:18:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:21,713 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:21,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:21,743 INFO L87 Difference]: Start difference. First operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 states have internal predecessors, (230), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-15 17:18:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,799 INFO L93 Difference]: Finished difference Result 164 states and 217 transitions. [2021-12-15 17:18:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:21,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 217 transitions. [2021-12-15 17:18:21,807 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 103 [2021-12-15 17:18:21,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 206 transitions. [2021-12-15 17:18:21,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 154 [2021-12-15 17:18:21,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 154 [2021-12-15 17:18:21,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 206 transitions. [2021-12-15 17:18:21,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:21,815 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 206 transitions. [2021-12-15 17:18:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 206 transitions. [2021-12-15 17:18:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-12-15 17:18:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 153 states have internal predecessors, (206), 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) [2021-12-15 17:18:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 206 transitions. [2021-12-15 17:18:21,840 INFO L704 BuchiCegarLoop]: Abstraction has 154 states and 206 transitions. [2021-12-15 17:18:21,841 INFO L587 BuchiCegarLoop]: Abstraction has 154 states and 206 transitions. [2021-12-15 17:18:21,841 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:18:21,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 154 states and 206 transitions. [2021-12-15 17:18:21,845 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 103 [2021-12-15 17:18:21,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,846 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,846 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,846 INFO L791 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 417#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_~retValue_acc~2#1, main_~tmp~0#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 418#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 440#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 391#L83 main_#t~ret5#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret5#1;havoc main_#t~ret5#1; 392#L177 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 434#L151 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 466#L200 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 475#L559-2 [2021-12-15 17:18:21,846 INFO L793 eck$LassoCheckResult]: Loop: 475#L559-2 assume !false; 384#L560 assume test_~splverifierCounter~0#1 < 4; 385#L561 test_~tmp~6#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 413#L569 assume !(0 != test_~tmp~6#1); 357#L569-2 test_~tmp___0~3#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 358#L579 assume !(0 != test_~tmp___0~3#1); 360#L579-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 361#L589 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 362#L545 assume { :end_inline_startSystem } true; 387#L597-2 assume { :begin_inline_timeShift } true; 438#L351 assume !(0 != ~pumpRunning~0); 412#L351-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret14#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 492#L409 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 393#L383-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 394#L375-3 assume { :end_inline_processEnvironment__wrappee__base } true; 411#L383-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 352#L409-1 assume { :end_inline_processEnvironment } true; 426#L358-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret6#1, __utac_acc__Specification2_spec__2_#t~ret7#1, __utac_acc__Specification2_spec__2_~tmp~1#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~1#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 369#L281 __utac_acc__Specification2_spec__2_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~1#1 := __utac_acc__Specification2_spec__2_#t~ret6#1;havoc __utac_acc__Specification2_spec__2_#t~ret6#1; 370#L211 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1#1);~methAndRunningLastTime~0 := 0; 480#L211-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 486#L368 assume { :end_inline_timeShift } true; 475#L559-2 [2021-12-15 17:18:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-15 17:18:21,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533383304] [2021-12-15 17:18:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,868 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,890 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash -293478674, now seen corresponding path program 1 times [2021-12-15 17:18:21,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935475966] [2021-12-15 17:18:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:21,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935475966] [2021-12-15 17:18:21,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935475966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:21,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:21,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:21,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174400632] [2021-12-15 17:18:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:21,914 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:21,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:21,915 INFO L87 Difference]: Start difference. First operand 154 states and 206 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:18:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,989 INFO L93 Difference]: Finished difference Result 213 states and 275 transitions. [2021-12-15 17:18:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:21,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 275 transitions. [2021-12-15 17:18:21,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-12-15 17:18:22,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 213 states and 275 transitions. [2021-12-15 17:18:22,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 213 [2021-12-15 17:18:22,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-12-15 17:18:22,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 213 states and 275 transitions. [2021-12-15 17:18:22,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:22,001 INFO L681 BuchiCegarLoop]: Abstraction has 213 states and 275 transitions. [2021-12-15 17:18:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states and 275 transitions. [2021-12-15 17:18:22,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-15 17:18:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 1.2910798122065728) internal successors, (275), 212 states have internal predecessors, (275), 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) [2021-12-15 17:18:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 275 transitions. [2021-12-15 17:18:22,013 INFO L704 BuchiCegarLoop]: Abstraction has 213 states and 275 transitions. [2021-12-15 17:18:22,014 INFO L587 BuchiCegarLoop]: Abstraction has 213 states and 275 transitions. [2021-12-15 17:18:22,014 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:18:22,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 275 transitions. [2021-12-15 17:18:22,015 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-12-15 17:18:22,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:22,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:22,016 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:22,016 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, 1, 1, 1, 1, 1] [2021-12-15 17:18:22,016 INFO L791 eck$LassoCheckResult]: Stem: 870#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 787#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_~retValue_acc~2#1, main_~tmp~0#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 788#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 812#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 767#L83 main_#t~ret5#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret5#1;havoc main_#t~ret5#1; 768#L177 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 804#L151 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 840#L200 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 851#L559-2 [2021-12-15 17:18:22,017 INFO L793 eck$LassoCheckResult]: Loop: 851#L559-2 assume !false; 756#L560 assume test_~splverifierCounter~0#1 < 4; 757#L561 test_~tmp~6#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 783#L569 assume !(0 != test_~tmp~6#1); 723#L569-2 test_~tmp___0~3#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 724#L579 assume !(0 != test_~tmp___0~3#1); 726#L579-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 731#L589 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 732#L545 assume { :end_inline_startSystem } true; 755#L597-2 assume { :begin_inline_timeShift } true; 810#L351 assume !(0 != ~pumpRunning~0); 820#L351-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret14#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 871#L409 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 760#L383-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret24#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 761#L321-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~5#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 762#L326-1 isHighWaterLevel_#t~ret24#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret24#1;havoc isHighWaterLevel_#t~ret24#1; 763#L511-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 743#L511-5 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 744#L517-1 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 764#L387-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 791#L375-2 assume { :end_inline_processEnvironment__wrappee__base } true; 779#L383-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 730#L409-1 assume { :end_inline_processEnvironment } true; 796#L358-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret6#1, __utac_acc__Specification2_spec__2_#t~ret7#1, __utac_acc__Specification2_spec__2_~tmp~1#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~1#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 739#L281 __utac_acc__Specification2_spec__2_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~1#1 := __utac_acc__Specification2_spec__2_#t~ret6#1;havoc __utac_acc__Specification2_spec__2_#t~ret6#1; 740#L211 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1#1);~methAndRunningLastTime~0 := 0; 858#L211-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 865#L368 assume { :end_inline_timeShift } true; 851#L559-2 [2021-12-15 17:18:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-15 17:18:22,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:22,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324697147] [2021-12-15 17:18:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:22,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,032 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 871599204, now seen corresponding path program 1 times [2021-12-15 17:18:22,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:22,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639962128] [2021-12-15 17:18:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:22,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:22,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:22,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639962128] [2021-12-15 17:18:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639962128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:22,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 17:18:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380318667] [2021-12-15 17:18:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:22,078 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:22,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 17:18:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 17:18:22,080 INFO L87 Difference]: Start difference. First operand 213 states and 275 transitions. cyclomatic complexity: 64 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-12-15 17:18:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:22,159 INFO L93 Difference]: Finished difference Result 599 states and 761 transitions. [2021-12-15 17:18:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:18:22,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 599 states and 761 transitions. [2021-12-15 17:18:22,165 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 428 [2021-12-15 17:18:22,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 599 states to 599 states and 761 transitions. [2021-12-15 17:18:22,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 599 [2021-12-15 17:18:22,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 599 [2021-12-15 17:18:22,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 599 states and 761 transitions. [2021-12-15 17:18:22,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:22,175 INFO L681 BuchiCegarLoop]: Abstraction has 599 states and 761 transitions. [2021-12-15 17:18:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states and 761 transitions. [2021-12-15 17:18:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 225. [2021-12-15 17:18:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.2755555555555556) internal successors, (287), 224 states have internal predecessors, (287), 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) [2021-12-15 17:18:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 287 transitions. [2021-12-15 17:18:22,194 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 287 transitions. [2021-12-15 17:18:22,194 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 287 transitions. [2021-12-15 17:18:22,194 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:18:22,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 287 transitions. [2021-12-15 17:18:22,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2021-12-15 17:18:22,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:22,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:22,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:22,197 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, 1, 1, 1, 1, 1] [2021-12-15 17:18:22,197 INFO L791 eck$LassoCheckResult]: Stem: 1707#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_~retValue_acc~2#1, main_~tmp~0#1;havoc main_~retValue_acc~2#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1612#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1637#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1587#L83 main_#t~ret5#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret5#1;havoc main_#t~ret5#1; 1588#L177 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1628#L151 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1673#L200 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1686#L559-2 [2021-12-15 17:18:22,197 INFO L793 eck$LassoCheckResult]: Loop: 1686#L559-2 assume !false; 1578#L560 assume test_~splverifierCounter~0#1 < 4; 1579#L561 test_~tmp~6#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 1607#L569 assume !(0 != test_~tmp~6#1); 1547#L569-2 test_~tmp___0~3#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 1663#L579 assume !(0 != test_~tmp___0~3#1); 1753#L579-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 1752#L589 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1750#L545 assume { :end_inline_startSystem } true; 1634#L597-2 assume { :begin_inline_timeShift } true; 1635#L351 assume !(0 != ~pumpRunning~0); 1647#L351-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret14#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 1709#L409 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 1583#L383-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret24#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 1584#L321-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 1589#L326-1 isHighWaterLevel_#t~ret24#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret24#1;havoc isHighWaterLevel_#t~ret24#1; 1590#L511-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1567#L511-5 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 1568#L517-1 processEnvironment__wrappee__highWaterSensor_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret13#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret13#1; 1591#L387-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1615#L375-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1603#L383-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1552#L409-1 assume { :end_inline_processEnvironment } true; 1620#L358-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret6#1, __utac_acc__Specification2_spec__2_#t~ret7#1, __utac_acc__Specification2_spec__2_~tmp~1#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~1#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1561#L281 __utac_acc__Specification2_spec__2_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~1#1 := __utac_acc__Specification2_spec__2_#t~ret6#1;havoc __utac_acc__Specification2_spec__2_#t~ret6#1; 1562#L211 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1#1);~methAndRunningLastTime~0 := 0; 1693#L211-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1702#L368 assume { :end_inline_timeShift } true; 1686#L559-2 [2021-12-15 17:18:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-15 17:18:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:22,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625250824] [2021-12-15 17:18:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:22,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,224 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1882716454, now seen corresponding path program 1 times [2021-12-15 17:18:22,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:22,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074454167] [2021-12-15 17:18:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:22,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1413180273, now seen corresponding path program 1 times [2021-12-15 17:18:22,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:22,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661344584] [2021-12-15 17:18:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:22,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,271 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:22,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:22,538 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:855) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:18:22,542 INFO L158 Benchmark]: Toolchain (without parser) took 2186.85ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 87.6MB in the beginning and 90.3MB in the end (delta: -2.7MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,542 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:18:22,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.05ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 68.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.07ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 65.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,543 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 111.1MB. Free memory was 65.0MB in the beginning and 62.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,544 INFO L158 Benchmark]: RCFGBuilder took 465.03ms. Allocated memory is still 111.1MB. Free memory was 62.7MB in the beginning and 72.9MB in the end (delta: -10.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,544 INFO L158 Benchmark]: BuchiAutomizer took 1206.62ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 90.3MB in the end (delta: -17.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-15 17:18:22,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.05ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 68.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.07ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 65.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.56ms. Allocated memory is still 111.1MB. Free memory was 65.0MB in the beginning and 62.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.03ms. Allocated memory is still 111.1MB. Free memory was 62.7MB in the beginning and 72.9MB in the end (delta: -10.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1206.62ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 90.3MB in the end (delta: -17.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:18:22,592 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable