/usr/bin/java -Xmx16000000000 -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-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:07:03,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:07:03,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:07:03,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:07:03,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:07:03,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:07:03,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:07:03,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:07:03,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:07:03,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:07:03,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:07:03,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:07:03,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:07:03,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:07:03,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:07:03,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:07:03,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:07:03,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:07:03,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:07:03,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:07:03,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:07:03,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:07:03,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:07:03,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:07:03,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:07:03,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:07:03,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:07:03,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:07:03,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:07:03,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:07:03,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:07:03,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:07:03,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:07:03,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:07:03,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:07:03,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:07:03,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:07:03,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:07:03,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:07:03,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:07:03,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:07:03,483 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 [2020-10-15 22:07:03,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:07:03,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:07:03,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:07:03,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:07:03,508 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:07:03,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:07:03,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:07:03,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:07:03,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:07:03,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:07:03,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:07:03,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:07:03,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:07:03,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:07:03,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:07:03,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:07:03,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:07:03,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:07:03,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:07:03,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:07:03,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:07:03,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:07:03,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:07:03,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:07:03,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:07:03,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:07:03,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:07:03,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:07:03,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:07:03,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:07:03,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:07:03,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:07:03,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:07:03,831 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:07:03,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-15 22:07:03,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a8b4cf6/9926437da3484a69a2477544bad08bb3/FLAGc93948895 [2020-10-15 22:07:04,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:07:04,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-15 22:07:04,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a8b4cf6/9926437da3484a69a2477544bad08bb3/FLAGc93948895 [2020-10-15 22:07:04,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a8b4cf6/9926437da3484a69a2477544bad08bb3 [2020-10-15 22:07:04,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:07:04,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:07:04,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:07:04,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:07:04,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:07:04,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:07:04" (1/1) ... [2020-10-15 22:07:04,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d62d0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:04, skipping insertion in model container [2020-10-15 22:07:04,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:07:04" (1/1) ... [2020-10-15 22:07:04,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:07:04,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:07:05,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:07:05,301 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:07:05,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:07:05,417 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:07:05,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05 WrapperNode [2020-10-15 22:07:05,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:07:05,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:07:05,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:07:05,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:07:05,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:07:05,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:07:05,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:07:05,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:07:05,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (1/1) ... [2020-10-15 22:07:05,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:07:05,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:07:05,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:07:05,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:07:05,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (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 [2020-10-15 22:07:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:07:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:07:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:07:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:07:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:07:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:07:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:07:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:07:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:07:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:07:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:07:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:07:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:07:05,574 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:07:05,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:07:05,884 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:07:05,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:07:05 BoogieIcfgContainer [2020-10-15 22:07:05,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:07:05,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:07:05,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:07:05,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:07:05,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:07:04" (1/3) ... [2020-10-15 22:07:05,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:07:05, skipping insertion in model container [2020-10-15 22:07:05,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:07:05" (2/3) ... [2020-10-15 22:07:05,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:07:05, skipping insertion in model container [2020-10-15 22:07:05,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:07:05" (3/3) ... [2020-10-15 22:07:05,895 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-10-15 22:07:05,907 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:07:05,907 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:07:05,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:07:05,915 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:07:05,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,963 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:07:05,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:07:06,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:07:06,005 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:07:06,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:07:06,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:07:06,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:07:06,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:07:06,006 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:07:06,006 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:07:06,021 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:07:06,024 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:07:06,027 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:07:06,029 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 22:07:06,075 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 22:07:06,075 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:07:06,080 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:07:06,083 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:07:07,667 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-15 22:07:07,668 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-15 22:07:07,674 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:07:07,700 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:07:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:07:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:07:07,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:07,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:07,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-15 22:07:07,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:07,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456286508] [2020-10-15 22:07:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:07,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456286508] [2020-10-15 22:07:07,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:07,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:07:07,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758434777] [2020-10-15 22:07:07,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:07:07,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:07,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:07:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:07:07,976 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:07:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,031 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 22:07:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:07:08,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:07:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,050 INFO L225 Difference]: With dead ends: 282 [2020-10-15 22:07:08,050 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 22:07:08,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:07:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 22:07:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 22:07:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 22:07:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 22:07:08,121 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 22:07:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,122 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 22:07:08,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:07:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 22:07:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:07:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:08,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:08,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:07:08,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-15 22:07:08,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:08,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789254432] [2020-10-15 22:07:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:08,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789254432] [2020-10-15 22:07:08,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:08,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:07:08,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417617993] [2020-10-15 22:07:08,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:07:08,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:08,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:07:08,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:07:08,233 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-15 22:07:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,266 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-15 22:07:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:07:08,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 22:07:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,269 INFO L225 Difference]: With dead ends: 290 [2020-10-15 22:07:08,269 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 22:07:08,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:07:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 22:07:08,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-15 22:07:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 22:07:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-15 22:07:08,287 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-15 22:07:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,288 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-15 22:07:08,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:07:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-15 22:07:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:07:08,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:08,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:08,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:07:08,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-15 22:07:08,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:08,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392336349] [2020-10-15 22:07:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:08,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392336349] [2020-10-15 22:07:08,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:08,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:07:08,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262049005] [2020-10-15 22:07:08,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:07:08,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:08,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:07:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:07:08,364 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-15 22:07:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,404 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-15 22:07:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:07:08,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:07:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,407 INFO L225 Difference]: With dead ends: 244 [2020-10-15 22:07:08,407 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 22:07:08,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:07:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 22:07:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-15 22:07:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 22:07:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-15 22:07:08,418 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-15 22:07:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,419 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-15 22:07:08,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:07:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-15 22:07:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:07:08,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:08,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:08,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:07:08,420 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:08,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-15 22:07:08,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:08,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5516138] [2020-10-15 22:07:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:08,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5516138] [2020-10-15 22:07:08,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:08,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:07:08,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582751386] [2020-10-15 22:07:08,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:07:08,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:08,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:07:08,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:07:08,483 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 3 states. [2020-10-15 22:07:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,488 INFO L93 Difference]: Finished difference Result 110 states and 249 transitions. [2020-10-15 22:07:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:07:08,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 22:07:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,490 INFO L225 Difference]: With dead ends: 110 [2020-10-15 22:07:08,490 INFO L226 Difference]: Without dead ends: 110 [2020-10-15 22:07:08,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:07:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-15 22:07:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-15 22:07:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 22:07:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2020-10-15 22:07:08,499 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 11 [2020-10-15 22:07:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,499 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2020-10-15 22:07:08,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:07:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2020-10-15 22:07:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:07:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:08,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:08,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:07:08,501 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-15 22:07:08,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:08,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890042795] [2020-10-15 22:07:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:08,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890042795] [2020-10-15 22:07:08,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:08,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:07:08,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323271496] [2020-10-15 22:07:08,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:07:08,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:07:08,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:07:08,543 INFO L87 Difference]: Start difference. First operand 110 states and 249 transitions. Second operand 4 states. [2020-10-15 22:07:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,561 INFO L93 Difference]: Finished difference Result 112 states and 234 transitions. [2020-10-15 22:07:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:07:08,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:07:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,563 INFO L225 Difference]: With dead ends: 112 [2020-10-15 22:07:08,563 INFO L226 Difference]: Without dead ends: 46 [2020-10-15 22:07:08,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:07:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-15 22:07:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-15 22:07:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 22:07:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 84 transitions. [2020-10-15 22:07:08,567 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 84 transitions. Word has length 12 [2020-10-15 22:07:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,568 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 84 transitions. [2020-10-15 22:07:08,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:07:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 84 transitions. [2020-10-15 22:07:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:07:08,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:07:08,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:07:08,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:07:08,569 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:07:08,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:07:08,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1997055762, now seen corresponding path program 1 times [2020-10-15 22:07:08,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:07:08,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903854632] [2020-10-15 22:07:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:07:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:07:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:07:08,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903854632] [2020-10-15 22:07:08,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:07:08,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:07:08,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116904709] [2020-10-15 22:07:08,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:07:08,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:07:08,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:07:08,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:07:08,610 INFO L87 Difference]: Start difference. First operand 46 states and 84 transitions. Second operand 4 states. [2020-10-15 22:07:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:07:08,623 INFO L93 Difference]: Finished difference Result 34 states and 60 transitions. [2020-10-15 22:07:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:07:08,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:07:08,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:07:08,625 INFO L225 Difference]: With dead ends: 34 [2020-10-15 22:07:08,625 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:07:08,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:07:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:07:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:07:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:07:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:07:08,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-15 22:07:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:07:08,627 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:07:08,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:07:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:07:08,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:07:08,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:07:08,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:07:08 BasicIcfg [2020-10-15 22:07:08,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:07:08,634 INFO L168 Benchmark]: Toolchain (without parser) took 3901.90 ms. Allocated memory was 251.7 MB in the beginning and 370.7 MB in the end (delta: 119.0 MB). Free memory was 207.0 MB in the beginning and 275.6 MB in the end (delta: -68.6 MB). Peak memory consumption was 50.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,635 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.09 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 206.1 MB in the beginning and 269.8 MB in the end (delta: -63.7 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 315.6 MB. Free memory was 269.8 MB in the beginning and 267.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,638 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 315.6 MB. Free memory was 267.3 MB in the beginning and 266.5 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,639 INFO L168 Benchmark]: RCFGBuilder took 393.44 ms. Allocated memory is still 315.6 MB. Free memory was 265.7 MB in the beginning and 243.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,639 INFO L168 Benchmark]: TraceAbstraction took 2743.46 ms. Allocated memory was 315.6 MB in the beginning and 370.7 MB in the end (delta: 55.1 MB). Free memory was 242.8 MB in the beginning and 275.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. [2020-10-15 22:07:08,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 686.09 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 206.1 MB in the beginning and 269.8 MB in the end (delta: -63.7 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 315.6 MB. Free memory was 269.8 MB in the beginning and 267.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 315.6 MB. Free memory was 267.3 MB in the beginning and 266.5 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * RCFGBuilder took 393.44 ms. Allocated memory is still 315.6 MB. Free memory was 265.7 MB in the beginning and 243.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2743.46 ms. Allocated memory was 315.6 MB in the beginning and 370.7 MB in the end (delta: 55.1 MB). Free memory was 242.8 MB in the beginning and 275.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 850 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 105 SDtfs, 84 SDslu, 96 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...