./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/loops/while_infinite_loop_3.c -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 3aac8fad8f983ba6915be6b6d24065853819d497 ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:56:11,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:56:11,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:56:12,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:56:12,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:56:12,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:56:12,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:56:12,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:56:12,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:56:12,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:56:12,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:56:12,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:56:12,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:56:12,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:56:12,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:56:12,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:56:12,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:56:12,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:56:12,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:56:12,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:56:12,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:56:12,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:56:12,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:56:12,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:56:12,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:56:12,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:56:12,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:56:12,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:56:12,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:56:12,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:56:12,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:56:12,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:56:12,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:56:12,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:56:12,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:56:12,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:56:12,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:56:12,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:56:12,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:56:12,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:56:12,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:56:12,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:56:12,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:56:12,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:56:12,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:56:12,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:56:12,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:56:12,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:56:12,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:56:12,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:56:12,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:56:12,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:56:12,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:56:12,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:56:12,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:56:12,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:56:12,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:56:12,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:56:12,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:56:12,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:56:12,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:56:12,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:56:12,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:56:12,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:56:12,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:56:12,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:56:12,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 3aac8fad8f983ba6915be6b6d24065853819d497 [2020-10-20 00:56:12,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:56:12,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:56:12,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:56:12,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:56:12,324 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:56:12,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2020-10-20 00:56:12,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e51e533d/3e010edc252c48a88a53d78770f369d3/FLAG98c7ab951 [2020-10-20 00:56:12,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:56:12,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2020-10-20 00:56:12,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e51e533d/3e010edc252c48a88a53d78770f369d3/FLAG98c7ab951 [2020-10-20 00:56:13,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e51e533d/3e010edc252c48a88a53d78770f369d3 [2020-10-20 00:56:13,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:56:13,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:56:13,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:13,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:56:13,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:56:13,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8d5a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13, skipping insertion in model container [2020-10-20 00:56:13,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:56:13,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:56:13,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:13,587 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:56:13,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:13,619 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:56:13,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13 WrapperNode [2020-10-20 00:56:13,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:13,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:13,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:56:13,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:56:13,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:13,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:56:13,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:56:13,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:56:13,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... [2020-10-20 00:56:13,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:56:13,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:56:13,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:56:13,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:56:13,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:56:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:56:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:56:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:56:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:56:13,946 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:56:13,947 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:56:13,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:13 BoogieIcfgContainer [2020-10-20 00:56:13,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:56:13,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:56:13,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:56:13,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:56:13,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:56:13" (1/3) ... [2020-10-20 00:56:13,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:13, skipping insertion in model container [2020-10-20 00:56:13,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:13" (2/3) ... [2020-10-20 00:56:13,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:13, skipping insertion in model container [2020-10-20 00:56:13,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:13" (3/3) ... [2020-10-20 00:56:13,957 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-10-20 00:56:13,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:56:13,985 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:56:14,014 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:56:14,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:56:14,048 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:56:14,048 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:56:14,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:56:14,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:56:14,049 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:56:14,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:56:14,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:56:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-20 00:56:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:56:14,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:14,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:56:14,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash 890553383, now seen corresponding path program 1 times [2020-10-20 00:56:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:14,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490928341] [2020-10-20 00:56:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:56:14,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490928341] [2020-10-20 00:56:14,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:56:14,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:56:14,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012172106] [2020-10-20 00:56:14,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:56:14,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:14,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:56:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:56:14,282 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-20 00:56:14,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:14,304 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2020-10-20 00:56:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:56:14,306 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:56:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:14,322 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:56:14,323 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:56:14,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:56:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:56:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:56:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:56:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-20 00:56:14,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-20 00:56:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:14,359 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-20 00:56:14,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:56:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-20 00:56:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:56:14,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:14,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:56:14,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:56:14,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2020-10-20 00:56:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:14,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645722273] [2020-10-20 00:56:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:56:14,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645722273] [2020-10-20 00:56:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:56:14,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:56:14,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946640261] [2020-10-20 00:56:14,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:56:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:56:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:56:14,450 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-10-20 00:56:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:14,480 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-20 00:56:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:56:14,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 00:56:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:14,482 INFO L225 Difference]: With dead ends: 11 [2020-10-20 00:56:14,482 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:56:14,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:56:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:56:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:56:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:56:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:56:14,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-10-20 00:56:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:14,485 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:56:14,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:56:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:56:14,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:56:14,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:56:14,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:56:14,529 INFO L270 CegarLoopResult]: At program point L6-5(lines 5 10) the Hoare annotation is: false [2020-10-20 00:56:14,529 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:56:14,530 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:56:14,531 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:56:14,531 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:56:14,531 INFO L270 CegarLoopResult]: At program point L16loopEntry(lines 16 19) the Hoare annotation is: (= ~x~0 0) [2020-10-20 00:56:14,531 INFO L270 CegarLoopResult]: At program point L16-2(lines 14 21) the Hoare annotation is: (= ~x~0 0) [2020-10-20 00:56:14,531 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:56:14,532 INFO L270 CegarLoopResult]: At program point L34(lines 24 35) the Hoare annotation is: false [2020-10-20 00:56:14,532 INFO L274 CegarLoopResult]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2020-10-20 00:56:14,532 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-20 00:56:14,532 INFO L270 CegarLoopResult]: At program point L6-2(lines 5 30) the Hoare annotation is: (= ~x~0 0) [2020-10-20 00:56:14,532 INFO L274 CegarLoopResult]: For program point L6-3(lines 6 8) no Hoare annotation was computed. [2020-10-20 00:56:14,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:56:14 BoogieIcfgContainer [2020-10-20 00:56:14,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:56:14,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:56:14,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:56:14,552 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:56:14,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:13" (3/4) ... [2020-10-20 00:56:14,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:56:14,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:56:14,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 00:56:14,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:56:14,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:56:14,624 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:56:14,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:56:14,628 INFO L168 Benchmark]: Toolchain (without parser) took 1291.79 ms. Allocated memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: 5.2 MB). Free memory was 21.1 MB in the beginning and 24.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,629 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.44 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 20.2 MB in the beginning and 20.8 MB in the end (delta: -584.6 kB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 43.0 MB. Free memory was 20.8 MB in the beginning and 19.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,631 INFO L168 Benchmark]: Boogie Preprocessor took 22.69 ms. Allocated memory is still 43.0 MB. Free memory was 19.1 MB in the beginning and 18.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,632 INFO L168 Benchmark]: RCFGBuilder took 268.83 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 17.8 MB in the beginning and 21.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,633 INFO L168 Benchmark]: TraceAbstraction took 601.79 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.2 MB in the beginning and 27.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,634 INFO L168 Benchmark]: Witness Printer took 72.92 ms. Allocated memory is still 47.7 MB. Free memory was 27.2 MB in the beginning and 24.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:14,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 278.44 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 20.2 MB in the beginning and 20.8 MB in the end (delta: -584.6 kB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.10 ms. Allocated memory is still 43.0 MB. Free memory was 20.8 MB in the beginning and 19.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.69 ms. Allocated memory is still 43.0 MB. Free memory was 19.1 MB in the beginning and 18.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 268.83 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 17.8 MB in the beginning and 21.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 601.79 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.2 MB in the beginning and 27.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Witness Printer took 72.92 ms. Allocated memory is still 47.7 MB. Free memory was 27.2 MB in the beginning and 24.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...