/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_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:24:50,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:24:50,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:24:50,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:24:50,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:24:50,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:24:50,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:24:50,480 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 17:24:50,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:24:50,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:24:50,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:24:50,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:24:50,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:24:50,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:24:50,510 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:24:50,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:24:50,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:24:50,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:24:50,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:24:50,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:24:50,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:24:50,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:24:50,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:24:50,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:24:50,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:24:50,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:24:50,790 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:24:50,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-05-21 17:24:50,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365bf8669/8a9d54eb59634206a4efad108b1a0dc6/FLAGa658fd882 [2021-05-21 17:24:51,242 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:24:51,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-05-21 17:24:51,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365bf8669/8a9d54eb59634206a4efad108b1a0dc6/FLAGa658fd882 [2021-05-21 17:24:51,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365bf8669/8a9d54eb59634206a4efad108b1a0dc6 [2021-05-21 17:24:51,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:24:51,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:24:51,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:51,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:24:51,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:24:51,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:51" (1/1) ... [2021-05-21 17:24:51,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b01ccf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:51, skipping insertion in model container [2021-05-21 17:24:51,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:51" (1/1) ... [2021-05-21 17:24:51,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:24:51,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:24:51,795 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_pso.oepc.i[950,963] [2021-05-21 17:24:51,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:51,916 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:24:51,925 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_pso.oepc.i[950,963] [2021-05-21 17:24:51,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:52,020 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:24:52,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52 WrapperNode [2021-05-21 17:24:52,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:52,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:52,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:24:52,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:24:52,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:52,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:24:52,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:24:52,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:24:52,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (1/1) ... [2021-05-21 17:24:52,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:24:52,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:24:52,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:24:52,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:24:52,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (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 17:24:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:24:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:24:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:24:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:24:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:24:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:24:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:24:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:24:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:24:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:24:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:24:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:24:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:24:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:24:52,174 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 17:24:52,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:24:52,433 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:24:52,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:52 BoogieIcfgContainer [2021-05-21 17:24:52,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:24:52,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:24:52,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:24:52,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:24:52,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:24:51" (1/3) ... [2021-05-21 17:24:52,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfb1789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:52, skipping insertion in model container [2021-05-21 17:24:52,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:52" (2/3) ... [2021-05-21 17:24:52,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfb1789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:52, skipping insertion in model container [2021-05-21 17:24:52,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:52" (3/3) ... [2021-05-21 17:24:52,439 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-05-21 17:24:52,442 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:24:52,443 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:24:52,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:24:52,443 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,461 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,462 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,466 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,467 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,467 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:52,473 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:24:52,486 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:24:52,498 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:24:52,499 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:24:52,499 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:24:52,499 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:24:52,499 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:24:52,499 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:24:52,499 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:24:52,499 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:24:52,506 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-05-21 17:24:52,867 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 17:24:52,900 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 17:24:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 17:24:52,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:52,931 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 17:24:52,931 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:52,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-05-21 17:24:52,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:52,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84222576] [2021-05-21 17:24:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:53,310 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 17:24:53,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:53,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84222576] [2021-05-21 17:24:53,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84222576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:53,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:53,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:53,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526481768] [2021-05-21 17:24:53,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:53,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:53,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:53,346 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 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 17:24:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:53,727 INFO L93 Difference]: Finished difference Result 15166 states and 51710 transitions. [2021-05-21 17:24:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 17:24:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 17:24:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:53,770 INFO L225 Difference]: With dead ends: 15166 [2021-05-21 17:24:53,770 INFO L226 Difference]: Without dead ends: 4888 [2021-05-21 17:24:53,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 209.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2021-05-21 17:24:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4168. [2021-05-21 17:24:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 4167 states have (on average 3.3057355411567073) internal successors, (13775), 4167 states have internal predecessors, (13775), 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 17:24:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 13775 transitions. [2021-05-21 17:24:54,053 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 13775 transitions. Word has length 48 [2021-05-21 17:24:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:54,056 INFO L482 AbstractCegarLoop]: Abstraction has 4168 states and 13775 transitions. [2021-05-21 17:24:54,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 17:24:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 13775 transitions. [2021-05-21 17:24:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 17:24:54,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:54,069 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 17:24:54,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:24:54,070 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1479617994, now seen corresponding path program 1 times [2021-05-21 17:24:54,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:54,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985489918] [2021-05-21 17:24:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:54,217 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 17:24:54,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:54,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985489918] [2021-05-21 17:24:54,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985489918] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:54,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:54,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:54,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590470267] [2021-05-21 17:24:54,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:54,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:54,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:54,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:54,219 INFO L87 Difference]: Start difference. First operand 4168 states and 13775 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:24:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:54,545 INFO L93 Difference]: Finished difference Result 6512 states and 21207 transitions. [2021-05-21 17:24:54,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 17:24:54,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:24:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:54,568 INFO L225 Difference]: With dead ends: 6512 [2021-05-21 17:24:54,568 INFO L226 Difference]: Without dead ends: 4880 [2021-05-21 17:24:54,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:24:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2021-05-21 17:24:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4160. [2021-05-21 17:24:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4160 states, 4159 states have (on average 3.2894926665063715) internal successors, (13681), 4159 states have internal predecessors, (13681), 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 17:24:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 13681 transitions. [2021-05-21 17:24:54,703 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 13681 transitions. Word has length 50 [2021-05-21 17:24:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:54,703 INFO L482 AbstractCegarLoop]: Abstraction has 4160 states and 13681 transitions. [2021-05-21 17:24:54,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 17:24:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 13681 transitions. [2021-05-21 17:24:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:24:54,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:54,716 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 17:24:54,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:24:54,716 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 941492503, now seen corresponding path program 1 times [2021-05-21 17:24:54,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:54,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147784520] [2021-05-21 17:24:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:54,837 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 17:24:54,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:54,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147784520] [2021-05-21 17:24:54,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147784520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:54,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:54,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:24:54,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682706838] [2021-05-21 17:24:54,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:24:54,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:54,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:24:54,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:24:54,839 INFO L87 Difference]: Start difference. First operand 4160 states and 13681 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 17:24:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:55,016 INFO L93 Difference]: Finished difference Result 6124 states and 19913 transitions. [2021-05-21 17:24:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:24:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 17:24:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:55,039 INFO L225 Difference]: With dead ends: 6124 [2021-05-21 17:24:55,039 INFO L226 Difference]: Without dead ends: 3604 [2021-05-21 17:24:55,040 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-05-21 17:24:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3124. [2021-05-21 17:24:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 3.20108869676593) internal successors, (9997), 3123 states have internal predecessors, (9997), 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 17:24:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 9997 transitions. [2021-05-21 17:24:55,109 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 9997 transitions. Word has length 52 [2021-05-21 17:24:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:55,110 INFO L482 AbstractCegarLoop]: Abstraction has 3124 states and 9997 transitions. [2021-05-21 17:24:55,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 17:24:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 9997 transitions. [2021-05-21 17:24:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:24:55,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:55,115 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 17:24:55,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:24:55,116 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash 442357815, now seen corresponding path program 1 times [2021-05-21 17:24:55,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:55,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220831511] [2021-05-21 17:24:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:55,198 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 17:24:55,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:55,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220831511] [2021-05-21 17:24:55,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220831511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:55,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:55,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:24:55,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677533326] [2021-05-21 17:24:55,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:24:55,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:55,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:24:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:24:55,202 INFO L87 Difference]: Start difference. First operand 3124 states and 9997 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 17:24:55,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:55,344 INFO L93 Difference]: Finished difference Result 3444 states and 10953 transitions. [2021-05-21 17:24:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:55,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 17:24:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:55,356 INFO L225 Difference]: With dead ends: 3444 [2021-05-21 17:24:55,356 INFO L226 Difference]: Without dead ends: 2884 [2021-05-21 17:24:55,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-05-21 17:24:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2021-05-21 17:24:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2883 states have (on average 3.183142559833507) internal successors, (9177), 2883 states have internal predecessors, (9177), 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 17:24:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 9177 transitions. [2021-05-21 17:24:55,417 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 9177 transitions. Word has length 52 [2021-05-21 17:24:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:55,418 INFO L482 AbstractCegarLoop]: Abstraction has 2884 states and 9177 transitions. [2021-05-21 17:24:55,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 17:24:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 9177 transitions. [2021-05-21 17:24:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:24:55,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:55,423 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 17:24:55,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:24:55,424 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:55,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-05-21 17:24:55,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:55,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075137063] [2021-05-21 17:24:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:55,508 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 17:24:55,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:55,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075137063] [2021-05-21 17:24:55,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075137063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:55,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:55,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:24:55,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701591578] [2021-05-21 17:24:55,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:24:55,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:24:55,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:24:55,510 INFO L87 Difference]: Start difference. First operand 2884 states and 9177 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 17:24:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:55,615 INFO L93 Difference]: Finished difference Result 3655 states and 11511 transitions. [2021-05-21 17:24:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:55,615 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 17:24:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:55,623 INFO L225 Difference]: With dead ends: 3655 [2021-05-21 17:24:55,623 INFO L226 Difference]: Without dead ends: 2695 [2021-05-21 17:24:55,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-05-21 17:24:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2021-05-21 17:24:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2694 states have (on average 3.1425389755011137) internal successors, (8466), 2694 states have internal predecessors, (8466), 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 17:24:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 8466 transitions. [2021-05-21 17:24:55,712 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 8466 transitions. Word has length 54 [2021-05-21 17:24:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:55,712 INFO L482 AbstractCegarLoop]: Abstraction has 2695 states and 8466 transitions. [2021-05-21 17:24:55,712 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 17:24:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 8466 transitions. [2021-05-21 17:24:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:24:55,717 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:55,717 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 17:24:55,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:24:55,717 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-05-21 17:24:55,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:55,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813740500] [2021-05-21 17:24:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:55,784 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 17:24:55,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:55,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813740500] [2021-05-21 17:24:55,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813740500] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:55,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:55,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:55,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086121925] [2021-05-21 17:24:55,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:55,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:55,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:55,786 INFO L87 Difference]: Start difference. First operand 2695 states and 8466 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 17:24:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:55,888 INFO L93 Difference]: Finished difference Result 2929 states and 8991 transitions. [2021-05-21 17:24:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:24:55,888 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 17:24:55,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:55,893 INFO L225 Difference]: With dead ends: 2929 [2021-05-21 17:24:55,893 INFO L226 Difference]: Without dead ends: 2101 [2021-05-21 17:24:55,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:24:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-05-21 17:24:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2101. [2021-05-21 17:24:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2100 states have (on average 3.0228571428571427) internal successors, (6348), 2100 states have internal predecessors, (6348), 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 17:24:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 6348 transitions. [2021-05-21 17:24:55,928 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 6348 transitions. Word has length 55 [2021-05-21 17:24:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:55,929 INFO L482 AbstractCegarLoop]: Abstraction has 2101 states and 6348 transitions. [2021-05-21 17:24:55,929 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 17:24:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 6348 transitions. [2021-05-21 17:24:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:24:55,932 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:55,932 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 17:24:55,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:24:55,932 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-05-21 17:24:55,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:55,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321123826] [2021-05-21 17:24:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:55,989 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 17:24:55,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:55,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321123826] [2021-05-21 17:24:55,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321123826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:55,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:55,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:24:55,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092060373] [2021-05-21 17:24:55,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:24:55,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:55,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:24:55,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:24:55,991 INFO L87 Difference]: Start difference. First operand 2101 states and 6348 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 17:24:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:56,102 INFO L93 Difference]: Finished difference Result 1849 states and 5454 transitions. [2021-05-21 17:24:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:24:56,102 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 17:24:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:56,105 INFO L225 Difference]: With dead ends: 1849 [2021-05-21 17:24:56,105 INFO L226 Difference]: Without dead ends: 993 [2021-05-21 17:24:56,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-05-21 17:24:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 945. [2021-05-21 17:24:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.8739406779661016) internal successors, (2713), 944 states have internal predecessors, (2713), 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 17:24:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2713 transitions. [2021-05-21 17:24:56,122 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2713 transitions. Word has length 57 [2021-05-21 17:24:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:56,122 INFO L482 AbstractCegarLoop]: Abstraction has 945 states and 2713 transitions. [2021-05-21 17:24:56,122 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 17:24:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2713 transitions. [2021-05-21 17:24:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 17:24:56,124 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:56,124 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 17:24:56,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:24:56,124 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1221339300, now seen corresponding path program 1 times [2021-05-21 17:24:56,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:56,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525086025] [2021-05-21 17:24:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:56,197 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 17:24:56,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:56,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525086025] [2021-05-21 17:24:56,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525086025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:56,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:56,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:56,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421828976] [2021-05-21 17:24:56,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:56,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:56,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:56,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:56,198 INFO L87 Difference]: Start difference. First operand 945 states and 2713 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 17:24:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:56,247 INFO L93 Difference]: Finished difference Result 891 states and 2551 transitions. [2021-05-21 17:24:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 17:24:56,248 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 17:24:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:56,248 INFO L225 Difference]: With dead ends: 891 [2021-05-21 17:24:56,248 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:24:56,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:24:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:24:56,248 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 17:24:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:24:56,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-05-21 17:24:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:56,249 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:24:56,249 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 17:24:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:24:56,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:24:56,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 17:24:56,250 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:24:56,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:24:56 BasicIcfg [2021-05-21 17:24:56,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:24:56,253 INFO L168 Benchmark]: Toolchain (without parser) took 4658.51 ms. Allocated memory was 371.2 MB in the beginning and 828.4 MB in the end (delta: 457.2 MB). Free memory was 333.1 MB in the beginning and 673.5 MB in the end (delta: -340.4 MB). Peak memory consumption was 118.6 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:56,253 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 371.2 MB. Free memory was 351.3 MB in the beginning and 351.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:24:56,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.87 ms. Allocated memory is still 371.2 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:56,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.27 ms. Allocated memory is still 371.2 MB. Free memory was 332.0 MB in the beginning and 330.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:24:56,253 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 371.2 MB. Free memory was 330.9 MB in the beginning and 328.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:56,254 INFO L168 Benchmark]: RCFGBuilder took 337.69 ms. Allocated memory is still 371.2 MB. Free memory was 328.8 MB in the beginning and 305.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:56,254 INFO L168 Benchmark]: TraceAbstraction took 3816.88 ms. Allocated memory was 371.2 MB in the beginning and 828.4 MB in the end (delta: 457.2 MB). Free memory was 304.7 MB in the beginning and 673.5 MB in the end (delta: -368.8 MB). Peak memory consumption was 90.5 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:56,255 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 371.2 MB. Free memory was 351.3 MB in the beginning and 351.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 424.87 ms. Allocated memory is still 371.2 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.27 ms. Allocated memory is still 371.2 MB. Free memory was 332.0 MB in the beginning and 330.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 371.2 MB. Free memory was 330.9 MB in the beginning and 328.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 337.69 ms. Allocated memory is still 371.2 MB. Free memory was 328.8 MB in the beginning and 305.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3816.88 ms. Allocated memory was 371.2 MB in the beginning and 828.4 MB in the end (delta: 457.2 MB). Free memory was 304.7 MB in the beginning and 673.5 MB in the end (delta: -368.8 MB). Peak memory consumption was 90.5 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: 3752.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 105.9ms, AutomataDifference: 1547.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 367.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 782 SDtfs, 1425 SDslu, 2839 SDs, 0 SdLazy, 374 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 283.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 997.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred in iteration=0, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 676.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1968 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.5ms SsaConstructionTime, 177.7ms SatisfiabilityAnalysisTime, 708.9ms InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 1651 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...