/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 15:48:55,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 15:48:55,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 15:48:55,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 15:48:55,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 15:48:55,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 15:48:55,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 15:48:55,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 15:48:55,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 15:48:55,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 15:48:55,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 15:48:55,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 15:48:55,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 15:48:55,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 15:48:55,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 15:48:55,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 15:48:55,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 15:48:55,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 15:48:55,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 15:48:55,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 15:48:55,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 15:48:55,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 15:48:55,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 15:48:55,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 15:48:55,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 15:48:55,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 15:48:55,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 15:48:55,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 15:48:55,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 15:48:55,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 15:48:55,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 15:48:55,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 15:48:55,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 15:48:55,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 15:48:55,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 15:48:55,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 15:48:55,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2019-12-18 15:48:55,461 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 15:48:55,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 15:48:55,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 15:48:55,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 15:48:55,463 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 15:48:55,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 15:48:55,464 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 15:48:55,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 15:48:55,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 15:48:55,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 15:48:55,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 15:48:55,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 15:48:55,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 15:48:55,465 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 15:48:55,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 15:48:55,466 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 15:48:55,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 15:48:55,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 15:48:55,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 15:48:55,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 15:48:55,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 15:48:55,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:48:55,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 15:48:55,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 15:48:55,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 15:48:55,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 15:48:55,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 15:48:55,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 15:48:55,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 15:48:55,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 15:48:55,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 15:48:55,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 15:48:55,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 15:48:55,749 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 15:48:55,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2019-12-18 15:48:55,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4851bdca/606dae27237348dfb0020fde21823ce2/FLAGdaa96086c [2019-12-18 15:48:56,397 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 15:48:56,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2019-12-18 15:48:56,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4851bdca/606dae27237348dfb0020fde21823ce2/FLAGdaa96086c [2019-12-18 15:48:56,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4851bdca/606dae27237348dfb0020fde21823ce2 [2019-12-18 15:48:56,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 15:48:56,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 15:48:56,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 15:48:56,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 15:48:56,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 15:48:56,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:48:56" (1/1) ... [2019-12-18 15:48:56,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa23638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:56, skipping insertion in model container [2019-12-18 15:48:56,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:48:56" (1/1) ... [2019-12-18 15:48:56,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 15:48:56,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 15:48:57,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:48:57,199 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 15:48:57,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:48:57,349 INFO L208 MainTranslator]: Completed translation [2019-12-18 15:48:57,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57 WrapperNode [2019-12-18 15:48:57,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 15:48:57,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 15:48:57,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 15:48:57,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 15:48:57,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 15:48:57,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 15:48:57,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 15:48:57,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 15:48:57,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (1/1) ... [2019-12-18 15:48:57,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 15:48:57,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 15:48:57,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 15:48:57,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 15:48:57,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (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 [2019-12-18 15:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 15:48:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 15:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 15:48:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 15:48:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 15:48:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 15:48:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 15:48:57,500 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 15:48:57,887 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 15:48:57,887 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-18 15:48:57,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:48:57 BoogieIcfgContainer [2019-12-18 15:48:57,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 15:48:57,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 15:48:57,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 15:48:57,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 15:48:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:48:56" (1/3) ... [2019-12-18 15:48:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad3dd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:48:57, skipping insertion in model container [2019-12-18 15:48:57,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:48:57" (2/3) ... [2019-12-18 15:48:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad3dd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:48:57, skipping insertion in model container [2019-12-18 15:48:57,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:48:57" (3/3) ... [2019-12-18 15:48:57,897 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2019-12-18 15:48:57,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 15:48:57,908 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 15:48:57,915 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-18 15:48:57,916 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 15:48:57,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,946 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,947 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:48:57,961 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 15:48:57,976 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:48:57,977 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:48:57,977 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:48:57,977 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:48:57,977 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:48:57,977 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:48:57,977 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:48:57,977 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:48:57,989 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions [2019-12-18 15:48:57,991 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions [2019-12-18 15:48:58,034 INFO L126 PetriNetUnfolder]: 24/81 cut-off events. [2019-12-18 15:48:58,035 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:48:58,044 INFO L76 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs. 3/58 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2019-12-18 15:48:58,051 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions [2019-12-18 15:48:58,074 INFO L126 PetriNetUnfolder]: 24/81 cut-off events. [2019-12-18 15:48:58,075 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:48:58,078 INFO L76 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs. 3/58 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2019-12-18 15:48:58,084 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2400 [2019-12-18 15:48:58,085 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:48:59,024 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4233 [2019-12-18 15:48:59,024 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2019-12-18 15:48:59,029 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 51 transitions [2019-12-18 15:48:59,061 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2019-12-18 15:48:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2019-12-18 15:48:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:48:59,074 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:48:59,075 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:48:59,076 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:48:59,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:48:59,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2019-12-18 15:48:59,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:48:59,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022040848] [2019-12-18 15:48:59,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:48:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:48:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:48:59,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022040848] [2019-12-18 15:48:59,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:48:59,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:48:59,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159159337] [2019-12-18 15:48:59,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-18 15:48:59,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:48:59,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-18 15:48:59,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-18 15:48:59,324 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2019-12-18 15:48:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:48:59,348 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2019-12-18 15:48:59,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-18 15:48:59,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-18 15:48:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:48:59,365 INFO L225 Difference]: With dead ends: 198 [2019-12-18 15:48:59,365 INFO L226 Difference]: Without dead ends: 198 [2019-12-18 15:48:59,366 INFO L631 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 [2019-12-18 15:48:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2019-12-18 15:48:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2019-12-18 15:48:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-12-18 15:48:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2019-12-18 15:48:59,427 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2019-12-18 15:48:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:48:59,427 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2019-12-18 15:48:59,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-18 15:48:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2019-12-18 15:48:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:48:59,429 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:48:59,429 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:48:59,430 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:48:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:48:59,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2019-12-18 15:48:59,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:48:59,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151500617] [2019-12-18 15:48:59,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:48:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:48:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:48:59,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151500617] [2019-12-18 15:48:59,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:48:59,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:48:59,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462909891] [2019-12-18 15:48:59,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:48:59,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:48:59,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:48:59,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,503 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2019-12-18 15:48:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:48:59,573 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2019-12-18 15:48:59,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:48:59,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-18 15:48:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:48:59,581 INFO L225 Difference]: With dead ends: 362 [2019-12-18 15:48:59,582 INFO L226 Difference]: Without dead ends: 362 [2019-12-18 15:48:59,585 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2019-12-18 15:48:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2019-12-18 15:48:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-12-18 15:48:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2019-12-18 15:48:59,635 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2019-12-18 15:48:59,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:48:59,635 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2019-12-18 15:48:59,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:48:59,636 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2019-12-18 15:48:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:48:59,638 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:48:59,638 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:48:59,638 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:48:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:48:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2019-12-18 15:48:59,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:48:59,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52804221] [2019-12-18 15:48:59,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:48:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:48:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:48:59,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52804221] [2019-12-18 15:48:59,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:48:59,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:48:59,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231187042] [2019-12-18 15:48:59,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:48:59,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:48:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:48:59,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,722 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2019-12-18 15:48:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:48:59,748 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2019-12-18 15:48:59,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:48:59,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-18 15:48:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:48:59,752 INFO L225 Difference]: With dead ends: 348 [2019-12-18 15:48:59,752 INFO L226 Difference]: Without dead ends: 348 [2019-12-18 15:48:59,753 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-12-18 15:48:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2019-12-18 15:48:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2019-12-18 15:48:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2019-12-18 15:48:59,771 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2019-12-18 15:48:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:48:59,772 INFO L462 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2019-12-18 15:48:59,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:48:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2019-12-18 15:48:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 15:48:59,774 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:48:59,775 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:48:59,775 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:48:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:48:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2019-12-18 15:48:59,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:48:59,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270932386] [2019-12-18 15:48:59,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:48:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:48:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:48:59,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270932386] [2019-12-18 15:48:59,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:48:59,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:48:59,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155529008] [2019-12-18 15:48:59,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:48:59,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:48:59,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:48:59,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,826 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2019-12-18 15:48:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:48:59,886 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2019-12-18 15:48:59,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:48:59,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-18 15:48:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:48:59,889 INFO L225 Difference]: With dead ends: 220 [2019-12-18 15:48:59,889 INFO L226 Difference]: Without dead ends: 220 [2019-12-18 15:48:59,889 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-12-18 15:48:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2019-12-18 15:48:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2019-12-18 15:48:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2019-12-18 15:48:59,902 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2019-12-18 15:48:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:48:59,903 INFO L462 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2019-12-18 15:48:59,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:48:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2019-12-18 15:48:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 15:48:59,905 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:48:59,905 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:48:59,906 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:48:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:48:59,906 INFO L82 PathProgramCache]: Analyzing trace with hash 952506058, now seen corresponding path program 1 times [2019-12-18 15:48:59,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:48:59,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723430345] [2019-12-18 15:48:59,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:48:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:48:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:48:59,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723430345] [2019-12-18 15:48:59,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:48:59,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:48:59,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630665961] [2019-12-18 15:48:59,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:48:59,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:48:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:48:59,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:48:59,970 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand 3 states. [2019-12-18 15:49:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:49:00,057 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2019-12-18 15:49:00,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:49:00,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-18 15:49:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:49:00,061 INFO L225 Difference]: With dead ends: 240 [2019-12-18 15:49:00,062 INFO L226 Difference]: Without dead ends: 240 [2019-12-18 15:49:00,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:49:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-12-18 15:49:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-12-18 15:49:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2019-12-18 15:49:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2019-12-18 15:49:00,072 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2019-12-18 15:49:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:49:00,073 INFO L462 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2019-12-18 15:49:00,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:49:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2019-12-18 15:49:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 15:49:00,075 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:49:00,089 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:49:00,089 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:49:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:49:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash -687819132, now seen corresponding path program 2 times [2019-12-18 15:49:00,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:49:00,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526448765] [2019-12-18 15:49:00,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:49:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:49:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:49:00,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526448765] [2019-12-18 15:49:00,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:49:00,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:49:00,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624987001] [2019-12-18 15:49:00,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:49:00,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:49:00,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:49:00,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:49:00,125 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand 3 states. [2019-12-18 15:49:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:49:00,176 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2019-12-18 15:49:00,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:49:00,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-18 15:49:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:49:00,184 INFO L225 Difference]: With dead ends: 228 [2019-12-18 15:49:00,184 INFO L226 Difference]: Without dead ends: 228 [2019-12-18 15:49:00,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:49:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-12-18 15:49:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2019-12-18 15:49:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2019-12-18 15:49:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2019-12-18 15:49:00,196 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2019-12-18 15:49:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:49:00,197 INFO L462 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2019-12-18 15:49:00,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:49:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2019-12-18 15:49:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 15:49:00,198 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:49:00,199 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:49:00,199 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:49:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:49:00,199 INFO L82 PathProgramCache]: Analyzing trace with hash -36638496, now seen corresponding path program 3 times [2019-12-18 15:49:00,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:49:00,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659620733] [2019-12-18 15:49:00,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:49:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:49:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:49:00,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659620733] [2019-12-18 15:49:00,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:49:00,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:49:00,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116655548] [2019-12-18 15:49:00,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:49:00,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:49:00,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:49:00,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:49:00,234 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand 3 states. [2019-12-18 15:49:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:49:00,268 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2019-12-18 15:49:00,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:49:00,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-18 15:49:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:49:00,269 INFO L225 Difference]: With dead ends: 194 [2019-12-18 15:49:00,269 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 15:49:00,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:49:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 15:49:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 15:49:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 15:49:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 15:49:00,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-18 15:49:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:49:00,271 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 15:49:00,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:49:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 15:49:00,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 15:49:00,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 03:49:00 BasicIcfg [2019-12-18 15:49:00,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 15:49:00,278 INFO L168 Benchmark]: Toolchain (without parser) took 3598.78 ms. Allocated memory was 137.9 MB in the beginning and 250.1 MB in the end (delta: 112.2 MB). Free memory was 101.5 MB in the beginning and 194.2 MB in the end (delta: -92.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,279 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.98 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 162.1 MB in the end (delta: -61.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.30 ms. Allocated memory is still 202.4 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,281 INFO L168 Benchmark]: Boogie Preprocessor took 27.20 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,282 INFO L168 Benchmark]: RCFGBuilder took 450.04 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 137.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-12-18 15:49:00,283 INFO L168 Benchmark]: TraceAbstraction took 2385.29 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 136.7 MB in the beginning and 194.2 MB in the end (delta: -57.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 15:49:00,287 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.98 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.1 MB in the beginning and 162.1 MB in the end (delta: -61.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.30 ms. Allocated memory is still 202.4 MB. Free memory was 162.1 MB in the beginning and 160.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.20 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.04 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 137.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2385.29 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 136.7 MB in the beginning and 194.2 MB in the end (delta: -57.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 62 ProgramPointsBefore, 33 ProgramPointsAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 990 VarBasedMoverChecksPositive, 68 VarBasedMoverChecksNegative, 40 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 4233 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 59 locations, 2 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 152 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 281 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...