./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/hhk2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/hhk2008.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87cc795aa65fe4d82c2d07650c9d4f8c9be47413 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:02:08,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:02:08,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:02:08,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:02:08,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:02:08,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:02:08,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:02:08,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:02:08,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:02:08,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:02:08,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:02:08,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:02:08,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:02:08,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:02:08,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:02:08,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:02:08,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:02:08,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:02:08,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:02:08,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:02:08,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:02:08,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:02:08,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:02:08,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:02:08,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:02:08,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:02:08,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:02:08,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:02:08,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:02:08,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:02:08,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:02:08,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:02:08,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:02:08,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:02:08,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:02:08,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:02:08,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:02:08,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:02:08,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:02:08,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:02:08,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:02:08,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:02:08,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:02:08,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:02:08,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:02:08,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:02:08,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:02:08,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:02:08,122 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:02:08,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:02:08,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:02:08,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:02:08,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:02:08,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:02:08,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:02:08,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:02:08,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:02:08,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:02:08,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:02:08,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:08,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:02:08,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87cc795aa65fe4d82c2d07650c9d4f8c9be47413 [2021-08-29 11:02:08,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:02:08,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:02:08,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:02:08,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:02:08,417 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:02:08,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/hhk2008.i [2021-08-29 11:02:08,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cffaef7/ee3b003d82e74f9983601f082e5574c8/FLAG746d21087 [2021-08-29 11:02:08,768 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:02:08,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/hhk2008.i [2021-08-29 11:02:08,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cffaef7/ee3b003d82e74f9983601f082e5574c8/FLAG746d21087 [2021-08-29 11:02:09,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cffaef7/ee3b003d82e74f9983601f082e5574c8 [2021-08-29 11:02:09,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:02:09,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:02:09,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:09,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:02:09,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:02:09,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586f118c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09, skipping insertion in model container [2021-08-29 11:02:09,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:02:09,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:02:09,305 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/hhk2008.i[895,908] [2021-08-29 11:02:09,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:09,315 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:02:09,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/hhk2008.i[895,908] [2021-08-29 11:02:09,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:09,340 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:02:09,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09 WrapperNode [2021-08-29 11:02:09,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:09,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:09,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:02:09,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:02:09,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:09,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:02:09,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:02:09,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:02:09,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:02:09,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:02:09,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:02:09,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:02:09,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (1/1) ... [2021-08-29 11:02:09,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:09,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 11:02:09,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 11:02:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:02:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:02:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:02:09,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:02:09,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:02:09,576 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:02:09,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:09 BoogieIcfgContainer [2021-08-29 11:02:09,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:02:09,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:02:09,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:02:09,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:02:09,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:02:09" (1/3) ... [2021-08-29 11:02:09,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f18567a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:09, skipping insertion in model container [2021-08-29 11:02:09,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:09" (2/3) ... [2021-08-29 11:02:09,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f18567a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:09, skipping insertion in model container [2021-08-29 11:02:09,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:09" (3/3) ... [2021-08-29 11:02:09,582 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-08-29 11:02:09,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:02:09,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:02:09,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:02:09,631 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:02:09,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:02:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2021-08-29 11:02:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:02:09,655 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:09,656 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:09,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash 179630160, now seen corresponding path program 1 times [2021-08-29 11:02:09,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:09,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594577777] [2021-08-29 11:02:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:09,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:09,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:09,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594577777] [2021-08-29 11:02:09,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594577777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:02:09,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:02:09,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 11:02:09,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302499104] [2021-08-29 11:02:09,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 11:02:09,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 11:02:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:02:10,000 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:10,148 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-08-29 11:02:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:02:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) Word has length 8 [2021-08-29 11:02:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:10,154 INFO L225 Difference]: With dead ends: 31 [2021-08-29 11:02:10,154 INFO L226 Difference]: Without dead ends: 10 [2021-08-29 11:02:10,156 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.79ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:02:10,159 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.52ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:10,159 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 83.52ms Time] [2021-08-29 11:02:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-29 11:02:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-29 11:02:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-08-29 11:02:10,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-08-29 11:02:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:10,190 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-08-29 11:02:10,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-08-29 11:02:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 11:02:10,191 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:10,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:10,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:02:10,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1275233045, now seen corresponding path program 1 times [2021-08-29 11:02:10,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:10,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140268135] [2021-08-29 11:02:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:10,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:10,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:10,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140268135] [2021-08-29 11:02:10,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140268135] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:02:10,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808672385] [2021-08-29 11:02:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:10,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:10,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:10,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:02:10,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:02:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:10,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 11:02:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:02:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:10,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:02:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:10,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808672385] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:02:10,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:02:10,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-08-29 11:02:10,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905976327] [2021-08-29 11:02:10,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 11:02:10,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:10,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 11:02:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-29 11:02:10,774 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-08-29 11:02:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:10,941 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-08-29 11:02:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 11:02:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) Word has length 9 [2021-08-29 11:02:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:10,943 INFO L225 Difference]: With dead ends: 18 [2021-08-29 11:02:10,943 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 11:02:10,945 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 237.06ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-29 11:02:10,946 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.12ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:10,946 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 38.12ms Time] [2021-08-29 11:02:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 11:02:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-29 11:02:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-29 11:02:10,952 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-08-29 11:02:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:10,952 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-29 11:02:10,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-08-29 11:02:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-29 11:02:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 11:02:10,955 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:10,955 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:10,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 11:02:11,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:11,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1486569077, now seen corresponding path program 2 times [2021-08-29 11:02:11,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:11,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502916659] [2021-08-29 11:02:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:11,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:02:11,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:11,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502916659] [2021-08-29 11:02:11,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502916659] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:02:11,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728647597] [2021-08-29 11:02:11,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 11:02:11,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:11,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:11,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:02:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 11:02:11,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 11:02:11,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:02:11,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-29 11:02:11,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:02:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:11,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:02:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:11,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728647597] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:02:11,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:02:11,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2021-08-29 11:02:11,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998479817] [2021-08-29 11:02:11,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-29 11:02:11,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:11,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-29 11:02:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-08-29 11:02:11,630 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:11,813 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-08-29 11:02:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 11:02:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) Word has length 11 [2021-08-29 11:02:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:11,813 INFO L225 Difference]: With dead ends: 15 [2021-08-29 11:02:11,813 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:02:11,814 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 264.12ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-08-29 11:02:11,814 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.52ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:11,814 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 43.52ms Time] [2021-08-29 11:02:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:02:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:02:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:02:11,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-29 11:02:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:11,815 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:02:11,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:02:11,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:02:11,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:02:11,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:02:12,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 11:02:12,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:02:12,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:12,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:12,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse0 (+ ULTIMATE.start_main_~cnt~0 ULTIMATE.start_main_~res~0))) (and (<= .cse0 .cse1) (< ULTIMATE.start_main_~res~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0 1)) (<= .cse1 .cse0))) [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-08-29 11:02:12,059 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 11:02:12,060 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:02:12,060 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-08-29 11:02:12,060 INFO L861 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-08-29 11:02:12,062 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:02:12,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:02:12 BoogieIcfgContainer [2021-08-29 11:02:12,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:02:12,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:02:12,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:02:12,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:02:12,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:09" (3/4) ... [2021-08-29 11:02:12,073 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:02:12,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:02:12,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:02:12,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:12,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:12,100 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:02:12,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:02:12,101 INFO L158 Benchmark]: Toolchain (without parser) took 2888.94ms. Allocated memory was 58.7MB in the beginning and 98.6MB in the end (delta: 39.8MB). Free memory was 37.2MB in the beginning and 78.6MB in the end (delta: -41.4MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-08-29 11:02:12,101 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:12,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.84ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 37.1MB in the beginning and 65.5MB in the end (delta: -28.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 11:02:12,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.23ms. Allocated memory is still 81.8MB. Free memory was 65.5MB in the beginning and 63.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:12,102 INFO L158 Benchmark]: Boogie Preprocessor took 24.06ms. Allocated memory is still 81.8MB. Free memory was 63.9MB in the beginning and 63.0MB in the end (delta: 977.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:12,102 INFO L158 Benchmark]: RCFGBuilder took 165.66ms. Allocated memory is still 81.8MB. Free memory was 63.0MB in the beginning and 54.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:02:12,102 INFO L158 Benchmark]: TraceAbstraction took 2493.27ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 28.5MB in the end (delta: 25.3MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2021-08-29 11:02:12,102 INFO L158 Benchmark]: Witness Printer took 29.20ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 78.6MB in the end (delta: -50.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:02:12,103 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 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.84ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 37.1MB in the beginning and 65.5MB in the end (delta: -28.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.23ms. Allocated memory is still 81.8MB. Free memory was 65.5MB in the beginning and 63.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.06ms. Allocated memory is still 81.8MB. Free memory was 63.9MB in the beginning and 63.0MB in the end (delta: 977.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 165.66ms. Allocated memory is still 81.8MB. Free memory was 63.0MB in the beginning and 54.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2493.27ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 28.5MB in the end (delta: 25.3MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 29.20ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 78.6MB in the end (delta: -50.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2438.46ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 19.93ms, AutomataDifference: 551.09ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 33.36ms, InitialAbstractionConstructionTime: 6.87ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 165.16ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 131.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 203 IncrementalHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 203 mSolverCounterSat, 3.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 597.97ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 17.67ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 12.50ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 118 FormulaSimplificationTreeSizeReductionInter, 16.54ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.72ms SsaConstructionTime, 82.38ms SatisfiabilityAnalysisTime, 1087.64ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 461 SizeOfPredicates, 10 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (cnt + res <= b + a && res < b + a + 1) && b + a <= cnt + res - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:02:12,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...