/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:24:58,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:24:58,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:24:58,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:24:58,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:24:58,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:24:58,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:24:58,095 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-NoLbe.epf [2021-05-21 17:24:58,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:24:58,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:24:58,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:24:58,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:24:58,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:24:58,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:24:58,126 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:24:58,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:24:58,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:24:58,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:24:58,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:24:58,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:24:58,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:24:58,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:24:58,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:24:58,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:24:58,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:24:58,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:24:58,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:24:58,389 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:24:58,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-05-21 17:24:58,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a623ebdc0/b8e217281452415d9d81066b2b772e6d/FLAG4047d113e [2021-05-21 17:24:58,901 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:24:58,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-05-21 17:24:58,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a623ebdc0/b8e217281452415d9d81066b2b772e6d/FLAG4047d113e [2021-05-21 17:24:58,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a623ebdc0/b8e217281452415d9d81066b2b772e6d [2021-05-21 17:24:58,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:24:58,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:24:58,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:58,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:24:58,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:24:58,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:58" (1/1) ... [2021-05-21 17:24:58,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7dff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:58, skipping insertion in model container [2021-05-21 17:24:58,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:58" (1/1) ... [2021-05-21 17:24:58,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:24:58,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:24:59,131 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i[950,963] [2021-05-21 17:24:59,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:59,260 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:24:59,270 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i[950,963] [2021-05-21 17:24:59,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:59,336 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:24:59,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59 WrapperNode [2021-05-21 17:24:59,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:59,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:59,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:24:59,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:24:59,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:59,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:24:59,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:24:59,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:24:59,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (1/1) ... [2021-05-21 17:24:59,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:24:59,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:24:59,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:24:59,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:24:59,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (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 [2021-05-21 17:24:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:24:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:24:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:24:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:24:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:24:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:24:59,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:24:59,436 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:24:59,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:24:59,695 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:24:59,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:59 BoogieIcfgContainer [2021-05-21 17:24:59,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:24:59,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:24:59,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:24:59,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:24:59,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:24:58" (1/3) ... [2021-05-21 17:24:59,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f250975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:59, skipping insertion in model container [2021-05-21 17:24:59,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:59" (2/3) ... [2021-05-21 17:24:59,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f250975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:59, skipping insertion in model container [2021-05-21 17:24:59,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:59" (3/3) ... [2021-05-21 17:24:59,702 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2021-05-21 17:24:59,713 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:24:59,714 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:24:59,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:24:59,714 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:59,768 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:24:59,784 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:24:59,808 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:24:59,809 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:24:59,809 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:24:59,809 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:24:59,809 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:24:59,809 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:24:59,809 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:24:59,809 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:24:59,820 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-05-21 17:25:00,169 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 17:25:00,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:00,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:00,234 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:00,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:00,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-05-21 17:25:00,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:00,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516068513] [2021-05-21 17:25:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:00,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:00,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516068513] [2021-05-21 17:25:00,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516068513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:00,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:00,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:25:00,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932858924] [2021-05-21 17:25:00,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:25:00,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:00,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:25:00,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:25:00,634 INFO L87 Difference]: Start difference. First operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:00,878 INFO L93 Difference]: Finished difference Result 11254 states and 38820 transitions. [2021-05-21 17:25:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:25:00,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-05-21 17:25:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:00,915 INFO L225 Difference]: With dead ends: 11254 [2021-05-21 17:25:00,915 INFO L226 Difference]: Without dead ends: 4264 [2021-05-21 17:25:00,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:25:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-05-21 17:25:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2021-05-21 17:25:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.373915083274689) internal successors, (14383), 4263 states have internal predecessors, (14383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14383 transitions. [2021-05-21 17:25:01,188 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14383 transitions. Word has length 48 [2021-05-21 17:25:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:01,190 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14383 transitions. [2021-05-21 17:25:01,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14383 transitions. [2021-05-21 17:25:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 17:25:01,204 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:01,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:01,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:25:01,205 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 622542102, now seen corresponding path program 1 times [2021-05-21 17:25:01,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:01,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565068242] [2021-05-21 17:25:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:01,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:01,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565068242] [2021-05-21 17:25:01,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565068242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:01,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:01,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:25:01,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315727695] [2021-05-21 17:25:01,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:25:01,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:25:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:25:01,382 INFO L87 Difference]: Start difference. First operand 4264 states and 14383 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:01,513 INFO L93 Difference]: Finished difference Result 4744 states and 15857 transitions. [2021-05-21 17:25:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:25:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-05-21 17:25:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:01,531 INFO L225 Difference]: With dead ends: 4744 [2021-05-21 17:25:01,532 INFO L226 Difference]: Without dead ends: 3904 [2021-05-21 17:25:01,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:25:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-05-21 17:25:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3904. [2021-05-21 17:25:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 3.3499871893415323) internal successors, (13075), 3903 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 13075 transitions. [2021-05-21 17:25:01,633 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 13075 transitions. Word has length 50 [2021-05-21 17:25:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:01,633 INFO L482 AbstractCegarLoop]: Abstraction has 3904 states and 13075 transitions. [2021-05-21 17:25:01,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 13075 transitions. [2021-05-21 17:25:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 17:25:01,641 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:01,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:01,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:25:01,642 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash -242345727, now seen corresponding path program 1 times [2021-05-21 17:25:01,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:01,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982571334] [2021-05-21 17:25:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:01,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:01,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982571334] [2021-05-21 17:25:01,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982571334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:01,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:01,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:25:01,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609696936] [2021-05-21 17:25:01,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:25:01,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:01,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:25:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:25:01,764 INFO L87 Difference]: Start difference. First operand 3904 states and 13075 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:01,915 INFO L93 Difference]: Finished difference Result 6448 states and 21303 transitions. [2021-05-21 17:25:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:25:01,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-05-21 17:25:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:01,937 INFO L225 Difference]: With dead ends: 6448 [2021-05-21 17:25:01,937 INFO L226 Difference]: Without dead ends: 4336 [2021-05-21 17:25:01,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:25:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-05-21 17:25:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3616. [2021-05-21 17:25:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.265006915629322) internal successors, (11803), 3615 states have internal predecessors, (11803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 11803 transitions. [2021-05-21 17:25:02,024 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 11803 transitions. Word has length 51 [2021-05-21 17:25:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:02,024 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 11803 transitions. [2021-05-21 17:25:02,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 11803 transitions. [2021-05-21 17:25:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:25:02,030 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:02,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:02,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:25:02,031 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:02,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1509932971, now seen corresponding path program 1 times [2021-05-21 17:25:02,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:02,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651936576] [2021-05-21 17:25:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:02,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:02,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651936576] [2021-05-21 17:25:02,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651936576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:02,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:02,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:25:02,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750101897] [2021-05-21 17:25:02,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:25:02,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:25:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:25:02,117 INFO L87 Difference]: Start difference. First operand 3616 states and 11803 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:02,275 INFO L93 Difference]: Finished difference Result 5036 states and 16299 transitions. [2021-05-21 17:25:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:25:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 17:25:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:02,302 INFO L225 Difference]: With dead ends: 5036 [2021-05-21 17:25:02,302 INFO L226 Difference]: Without dead ends: 2756 [2021-05-21 17:25:02,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 17:25:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-05-21 17:25:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2021-05-21 17:25:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 3.162613430127042) internal successors, (8713), 2755 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 8713 transitions. [2021-05-21 17:25:02,371 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 8713 transitions. Word has length 52 [2021-05-21 17:25:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:02,372 INFO L482 AbstractCegarLoop]: Abstraction has 2756 states and 8713 transitions. [2021-05-21 17:25:02,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 8713 transitions. [2021-05-21 17:25:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:25:02,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:02,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:02,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:25:02,381 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-05-21 17:25:02,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:02,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760762152] [2021-05-21 17:25:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:02,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:02,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760762152] [2021-05-21 17:25:02,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760762152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:02,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:02,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:25:02,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918495460] [2021-05-21 17:25:02,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:25:02,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:25:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:25:02,478 INFO L87 Difference]: Start difference. First operand 2756 states and 8713 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:02,567 INFO L93 Difference]: Finished difference Result 3468 states and 10847 transitions. [2021-05-21 17:25:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:25:02,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-05-21 17:25:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:02,574 INFO L225 Difference]: With dead ends: 3468 [2021-05-21 17:25:02,574 INFO L226 Difference]: Without dead ends: 2572 [2021-05-21 17:25:02,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:25:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-05-21 17:25:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2572. [2021-05-21 17:25:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2571 states have (on average 3.1221314663555035) internal successors, (8027), 2571 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 8027 transitions. [2021-05-21 17:25:02,640 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 8027 transitions. Word has length 54 [2021-05-21 17:25:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:02,640 INFO L482 AbstractCegarLoop]: Abstraction has 2572 states and 8027 transitions. [2021-05-21 17:25:02,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 8027 transitions. [2021-05-21 17:25:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:25:02,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:02,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:02,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:25:02,646 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-05-21 17:25:02,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:02,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771030739] [2021-05-21 17:25:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:02,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:02,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771030739] [2021-05-21 17:25:02,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771030739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:02,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:02,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:25:02,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547262958] [2021-05-21 17:25:02,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:25:02,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:25:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:25:02,720 INFO L87 Difference]: Start difference. First operand 2572 states and 8027 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:02,844 INFO L93 Difference]: Finished difference Result 2776 states and 8466 transitions. [2021-05-21 17:25:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:25:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 17:25:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:02,850 INFO L225 Difference]: With dead ends: 2776 [2021-05-21 17:25:02,850 INFO L226 Difference]: Without dead ends: 2008 [2021-05-21 17:25:02,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:25:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-05-21 17:25:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-05-21 17:25:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 3.0064773293472844) internal successors, (6034), 2007 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 6034 transitions. [2021-05-21 17:25:02,907 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 6034 transitions. Word has length 55 [2021-05-21 17:25:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:02,908 INFO L482 AbstractCegarLoop]: Abstraction has 2008 states and 6034 transitions. [2021-05-21 17:25:02,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 6034 transitions. [2021-05-21 17:25:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:25:02,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:02,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:02,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:25:02,913 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-05-21 17:25:02,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:02,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532067470] [2021-05-21 17:25:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:03,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:03,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532067470] [2021-05-21 17:25:03,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532067470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:03,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:03,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:25:03,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012660774] [2021-05-21 17:25:03,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:25:03,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:25:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:25:03,011 INFO L87 Difference]: Start difference. First operand 2008 states and 6034 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:03,125 INFO L93 Difference]: Finished difference Result 1765 states and 5170 transitions. [2021-05-21 17:25:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:25:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 17:25:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:03,128 INFO L225 Difference]: With dead ends: 1765 [2021-05-21 17:25:03,128 INFO L226 Difference]: Without dead ends: 848 [2021-05-21 17:25:03,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:25:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-05-21 17:25:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2021-05-21 17:25:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.855962219598583) internal successors, (2419), 847 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2419 transitions. [2021-05-21 17:25:03,142 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2419 transitions. Word has length 57 [2021-05-21 17:25:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:03,142 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2419 transitions. [2021-05-21 17:25:03,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2419 transitions. [2021-05-21 17:25:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 17:25:03,143 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:25:03,143 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:25:03,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:25:03,144 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:25:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:25:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash -793960868, now seen corresponding path program 1 times [2021-05-21 17:25:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:25:03,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344859844] [2021-05-21 17:25:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:25:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:25:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:25:03,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:25:03,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344859844] [2021-05-21 17:25:03,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344859844] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:25:03,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:25:03,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:25:03,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460056430] [2021-05-21 17:25:03,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:25:03,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:25:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:25:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:25:03,246 INFO L87 Difference]: Start difference. First operand 848 states and 2419 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:25:03,317 INFO L93 Difference]: Finished difference Result 794 states and 2257 transitions. [2021-05-21 17:25:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 17:25:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-05-21 17:25:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:25:03,318 INFO L225 Difference]: With dead ends: 794 [2021-05-21 17:25:03,318 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:25:03,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:25:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:25:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:25:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:25:03,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-05-21 17:25:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:25:03,319 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:25:03,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:25:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:25:03,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:25:03,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 17:25:03,320 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:25:03,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:25:03 BasicIcfg [2021-05-21 17:25:03,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:25:03,323 INFO L168 Benchmark]: Toolchain (without parser) took 4386.73 ms. Allocated memory was 432.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 394.2 MB in the beginning and 1.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 154.8 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,323 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 432.0 MB. Free memory was 412.4 MB in the beginning and 412.3 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:25:03,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.04 ms. Allocated memory is still 432.0 MB. Free memory was 394.0 MB in the beginning and 394.1 MB in the end (delta: -108.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 432.0 MB. Free memory was 394.1 MB in the beginning and 392.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,323 INFO L168 Benchmark]: Boogie Preprocessor took 14.11 ms. Allocated memory is still 432.0 MB. Free memory was 392.0 MB in the beginning and 390.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,324 INFO L168 Benchmark]: RCFGBuilder took 311.08 ms. Allocated memory is still 432.0 MB. Free memory was 390.9 MB in the beginning and 365.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,324 INFO L168 Benchmark]: TraceAbstraction took 3624.49 ms. Allocated memory was 432.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 365.7 MB in the beginning and 1.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 124.4 MB. Max. memory is 16.0 GB. [2021-05-21 17:25:03,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 432.0 MB. Free memory was 412.4 MB in the beginning and 412.3 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 398.04 ms. Allocated memory is still 432.0 MB. Free memory was 394.0 MB in the beginning and 394.1 MB in the end (delta: -108.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 432.0 MB. Free memory was 394.1 MB in the beginning and 392.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.11 ms. Allocated memory is still 432.0 MB. Free memory was 392.0 MB in the beginning and 390.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 311.08 ms. Allocated memory is still 432.0 MB. Free memory was 390.9 MB in the beginning and 365.7 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3624.49 ms. Allocated memory was 432.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 365.7 MB in the beginning and 1.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 124.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3512.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 105.5ms, AutomataDifference: 1238.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 360.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 800 SDtfs, 1151 SDslu, 2566 SDs, 0 SdLazy, 294 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 174.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 710.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 648.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 720 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.7ms SsaConstructionTime, 173.9ms SatisfiabilityAnalysisTime, 786.2ms InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...