/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.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 00:15:08,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 00:15:08,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 00:15:08,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 00:15:08,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 00:15:08,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 00:15:08,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 00:15:08,900 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 [2021-06-05 00:15:08,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 00:15:08,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 00:15:08,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 00:15:08,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 00:15:08,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 00:15:08,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 00:15:08,928 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 00:15:08,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 00:15:08,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 00:15:08,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 00:15:08,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 00:15:08,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 00:15:08,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 00:15:08,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 00:15:08,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 00:15:08,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 00:15:08,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 00:15:08,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 00:15:09,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 00:15:09,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 00:15:09,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 00:15:09,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 00:15:09,193 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 00:15:09,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-06-05 00:15:09,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e872ac628/defae2bcf5e54fd8a69557eb4da8f6fd/FLAG53e0f9a03 [2021-06-05 00:15:09,703 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 00:15:09,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-06-05 00:15:09,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e872ac628/defae2bcf5e54fd8a69557eb4da8f6fd/FLAG53e0f9a03 [2021-06-05 00:15:10,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e872ac628/defae2bcf5e54fd8a69557eb4da8f6fd [2021-06-05 00:15:10,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 00:15:10,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 00:15:10,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 00:15:10,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 00:15:10,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 00:15:10,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482bffed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10, skipping insertion in model container [2021-06-05 00:15:10,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 00:15:10,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 00:15:10,459 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.opt.i[949,962] [2021-06-05 00:15:10,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:15:10,597 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 00:15:10,605 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.opt.i[949,962] [2021-06-05 00:15:10,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:15:10,684 INFO L208 MainTranslator]: Completed translation [2021-06-05 00:15:10,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10 WrapperNode [2021-06-05 00:15:10,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 00:15:10,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 00:15:10,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 00:15:10,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 00:15:10,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 00:15:10,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 00:15:10,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 00:15:10,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 00:15:10,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (1/1) ... [2021-06-05 00:15:10,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 00:15:10,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 00:15:10,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 00:15:10,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 00:15:10,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (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 [2021-06-05 00:15:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 00:15:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 00:15:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 00:15:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 00:15:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 00:15:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 00:15:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 00:15:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 00:15:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 00:15:10,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 00:15:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 00:15:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 00:15:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 00:15:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 00:15:10,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 00:15:11,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 00:15:11,125 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 00:15:11,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:15:11 BoogieIcfgContainer [2021-06-05 00:15:11,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 00:15:11,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 00:15:11,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 00:15:11,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 00:15:11,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:15:10" (1/3) ... [2021-06-05 00:15:11,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120feaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:15:11, skipping insertion in model container [2021-06-05 00:15:11,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:15:10" (2/3) ... [2021-06-05 00:15:11,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120feaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:15:11, skipping insertion in model container [2021-06-05 00:15:11,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:15:11" (3/3) ... [2021-06-05 00:15:11,131 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-06-05 00:15:11,136 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 00:15:11,137 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 00:15:11,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 00:15:11,137 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 00:15:11,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,162 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,164 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,168 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,168 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,168 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,173 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,174 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,174 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:15:11,182 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 00:15:11,197 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 00:15:11,218 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 00:15:11,218 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 00:15:11,218 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 00:15:11,218 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 00:15:11,218 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 00:15:11,218 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 00:15:11,219 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 00:15:11,219 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 00:15:11,229 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-06-05 00:15:11,574 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) [2021-06-05 00:15:11,606 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) [2021-06-05 00:15:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 00:15:11,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:11,632 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] [2021-06-05 00:15:11,632 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-06-05 00:15:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:11,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663983094] [2021-06-05 00:15:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:11,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:11,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663983094] [2021-06-05 00:15:11,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663983094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:11,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:11,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:15:11,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215367380] [2021-06-05 00:15:11,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:15:11,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:11,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:15:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:15:11,960 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) [2021-06-05 00:15:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:12,229 INFO L93 Difference]: Finished difference Result 11254 states and 38820 transitions. [2021-06-05 00:15:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:15:12,231 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 [2021-06-05 00:15:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:12,268 INFO L225 Difference]: With dead ends: 11254 [2021-06-05 00:15:12,268 INFO L226 Difference]: Without dead ends: 4264 [2021-06-05 00:15:12,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:15:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-06-05 00:15:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2021-06-05 00:15:12,396 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) [2021-06-05 00:15:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14383 transitions. [2021-06-05 00:15:12,422 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14383 transitions. Word has length 48 [2021-06-05 00:15:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:12,422 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14383 transitions. [2021-06-05 00:15:12,423 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) [2021-06-05 00:15:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14383 transitions. [2021-06-05 00:15:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 00:15:12,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:12,437 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] [2021-06-05 00:15:12,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 00:15:12,437 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash 622542102, now seen corresponding path program 1 times [2021-06-05 00:15:12,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:12,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8255211] [2021-06-05 00:15:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:12,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:12,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8255211] [2021-06-05 00:15:12,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8255211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:12,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:12,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:15:12,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324010974] [2021-06-05 00:15:12,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:15:12,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:12,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:15:12,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:15:12,534 INFO L87 Difference]: Start difference. First operand 4264 states and 14383 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) [2021-06-05 00:15:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:12,803 INFO L93 Difference]: Finished difference Result 6808 states and 22581 transitions. [2021-06-05 00:15:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 00:15:12,803 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 [2021-06-05 00:15:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:12,823 INFO L225 Difference]: With dead ends: 6808 [2021-06-05 00:15:12,823 INFO L226 Difference]: Without dead ends: 4528 [2021-06-05 00:15:12,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 00:15:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2021-06-05 00:15:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 3808. [2021-06-05 00:15:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3807 states have (on average 3.287365379563961) internal successors, (12515), 3807 states have internal predecessors, (12515), 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) [2021-06-05 00:15:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 12515 transitions. [2021-06-05 00:15:12,966 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 12515 transitions. Word has length 50 [2021-06-05 00:15:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:12,966 INFO L482 AbstractCegarLoop]: Abstraction has 3808 states and 12515 transitions. [2021-06-05 00:15:12,967 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) [2021-06-05 00:15:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 12515 transitions. [2021-06-05 00:15:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 00:15:12,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:12,975 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] [2021-06-05 00:15:12,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 00:15:12,976 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:12,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1509932971, now seen corresponding path program 1 times [2021-06-05 00:15:12,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:12,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813108845] [2021-06-05 00:15:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:13,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:13,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813108845] [2021-06-05 00:15:13,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813108845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:13,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:13,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:15:13,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97563022] [2021-06-05 00:15:13,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:15:13,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:15:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:15:13,072 INFO L87 Difference]: Start difference. First operand 3808 states and 12515 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) [2021-06-05 00:15:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:13,251 INFO L93 Difference]: Finished difference Result 5356 states and 17475 transitions. [2021-06-05 00:15:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:15:13,252 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 [2021-06-05 00:15:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:13,266 INFO L225 Difference]: With dead ends: 5356 [2021-06-05 00:15:13,266 INFO L226 Difference]: Without dead ends: 2884 [2021-06-05 00:15:13,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 00:15:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-06-05 00:15:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2021-06-05 00:15:13,317 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) [2021-06-05 00:15:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 9177 transitions. [2021-06-05 00:15:13,324 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 9177 transitions. Word has length 52 [2021-06-05 00:15:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:13,324 INFO L482 AbstractCegarLoop]: Abstraction has 2884 states and 9177 transitions. [2021-06-05 00:15:13,324 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) [2021-06-05 00:15:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 9177 transitions. [2021-06-05 00:15:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 00:15:13,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:13,330 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] [2021-06-05 00:15:13,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 00:15:13,330 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-06-05 00:15:13,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:13,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462295291] [2021-06-05 00:15:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:13,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:13,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462295291] [2021-06-05 00:15:13,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462295291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:13,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:13,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:15:13,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180514943] [2021-06-05 00:15:13,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:15:13,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:15:13,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:15:13,425 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) [2021-06-05 00:15:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:13,509 INFO L93 Difference]: Finished difference Result 3655 states and 11511 transitions. [2021-06-05 00:15:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:15:13,509 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 [2021-06-05 00:15:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:13,532 INFO L225 Difference]: With dead ends: 3655 [2021-06-05 00:15:13,532 INFO L226 Difference]: Without dead ends: 2695 [2021-06-05 00:15:13,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:15:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-06-05 00:15:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2021-06-05 00:15:13,579 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) [2021-06-05 00:15:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 8466 transitions. [2021-06-05 00:15:13,585 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 8466 transitions. Word has length 54 [2021-06-05 00:15:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:13,586 INFO L482 AbstractCegarLoop]: Abstraction has 2695 states and 8466 transitions. [2021-06-05 00:15:13,586 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) [2021-06-05 00:15:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 8466 transitions. [2021-06-05 00:15:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 00:15:13,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:13,592 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] [2021-06-05 00:15:13,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 00:15:13,592 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-06-05 00:15:13,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:13,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218772779] [2021-06-05 00:15:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:13,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:13,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218772779] [2021-06-05 00:15:13,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218772779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:13,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:13,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:15:13,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891622380] [2021-06-05 00:15:13,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:15:13,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:13,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:15:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:15:13,693 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) [2021-06-05 00:15:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:13,796 INFO L93 Difference]: Finished difference Result 2929 states and 8991 transitions. [2021-06-05 00:15:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:15:13,796 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 [2021-06-05 00:15:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:13,801 INFO L225 Difference]: With dead ends: 2929 [2021-06-05 00:15:13,801 INFO L226 Difference]: Without dead ends: 2101 [2021-06-05 00:15:13,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:15:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-06-05 00:15:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2101. [2021-06-05 00:15:13,856 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) [2021-06-05 00:15:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 6348 transitions. [2021-06-05 00:15:13,860 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 6348 transitions. Word has length 55 [2021-06-05 00:15:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:13,861 INFO L482 AbstractCegarLoop]: Abstraction has 2101 states and 6348 transitions. [2021-06-05 00:15:13,861 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) [2021-06-05 00:15:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 6348 transitions. [2021-06-05 00:15:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:15:13,864 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:13,865 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] [2021-06-05 00:15:13,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 00:15:13,865 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-06-05 00:15:13,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:13,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295469236] [2021-06-05 00:15:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:13,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:13,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295469236] [2021-06-05 00:15:13,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295469236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:13,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:13,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 00:15:13,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249370288] [2021-06-05 00:15:13,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 00:15:13,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:13,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 00:15:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 00:15:13,986 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) [2021-06-05 00:15:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:14,119 INFO L93 Difference]: Finished difference Result 1849 states and 5454 transitions. [2021-06-05 00:15:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 00:15:14,120 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 [2021-06-05 00:15:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:14,122 INFO L225 Difference]: With dead ends: 1849 [2021-06-05 00:15:14,122 INFO L226 Difference]: Without dead ends: 993 [2021-06-05 00:15:14,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 00:15:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-06-05 00:15:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 945. [2021-06-05 00:15:14,136 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) [2021-06-05 00:15:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2713 transitions. [2021-06-05 00:15:14,138 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2713 transitions. Word has length 57 [2021-06-05 00:15:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:14,138 INFO L482 AbstractCegarLoop]: Abstraction has 945 states and 2713 transitions. [2021-06-05 00:15:14,139 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) [2021-06-05 00:15:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2713 transitions. [2021-06-05 00:15:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 00:15:14,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:14,140 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] [2021-06-05 00:15:14,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 00:15:14,141 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1221339300, now seen corresponding path program 1 times [2021-06-05 00:15:14,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:14,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430333719] [2021-06-05 00:15:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:14,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:14,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430333719] [2021-06-05 00:15:14,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430333719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:14,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:14,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:15:14,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583174057] [2021-06-05 00:15:14,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:15:14,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:14,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:15:14,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:15:14,227 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) [2021-06-05 00:15:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:14,277 INFO L93 Difference]: Finished difference Result 1428 states and 4154 transitions. [2021-06-05 00:15:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 00:15:14,278 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 [2021-06-05 00:15:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:14,280 INFO L225 Difference]: With dead ends: 1428 [2021-06-05 00:15:14,280 INFO L226 Difference]: Without dead ends: 848 [2021-06-05 00:15:14,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-05 00:15:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-06-05 00:15:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2021-06-05 00:15:14,292 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) [2021-06-05 00:15:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2419 transitions. [2021-06-05 00:15:14,293 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2419 transitions. Word has length 59 [2021-06-05 00:15:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:14,294 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2419 transitions. [2021-06-05 00:15:14,294 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) [2021-06-05 00:15:14,294 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2419 transitions. [2021-06-05 00:15:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 00:15:14,295 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:15:14,295 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] [2021-06-05 00:15:14,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 00:15:14,296 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:15:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:15:14,296 INFO L82 PathProgramCache]: Analyzing trace with hash -793960868, now seen corresponding path program 2 times [2021-06-05 00:15:14,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:15:14,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535458869] [2021-06-05 00:15:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:15:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:15:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:15:14,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:15:14,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535458869] [2021-06-05 00:15:14,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535458869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:15:14,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:15:14,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:15:14,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402278711] [2021-06-05 00:15:14,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:15:14,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:15:14,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:15:14,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:15:14,376 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) [2021-06-05 00:15:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:15:14,458 INFO L93 Difference]: Finished difference Result 794 states and 2257 transitions. [2021-06-05 00:15:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 00:15:14,458 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 [2021-06-05 00:15:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:15:14,459 INFO L225 Difference]: With dead ends: 794 [2021-06-05 00:15:14,459 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 00:15:14,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:15:14,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 00:15:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 00:15:14,459 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) [2021-06-05 00:15:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 00:15:14,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-05 00:15:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:15:14,459 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 00:15:14,460 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) [2021-06-05 00:15:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 00:15:14,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 00:15:14,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 00:15:14,461 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 00:15:14,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:15:14 BasicIcfg [2021-06-05 00:15:14,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 00:15:14,463 INFO L168 Benchmark]: Toolchain (without parser) took 4232.70 ms. Allocated memory was 388.0 MB in the beginning and 859.8 MB in the end (delta: 471.9 MB). Free memory was 349.5 MB in the beginning and 763.9 MB in the end (delta: -414.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.0 GB. [2021-06-05 00:15:14,464 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 388.0 MB. Free memory was 367.9 MB in the beginning and 367.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:15:14,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.68 ms. Allocated memory is still 388.0 MB. Free memory was 349.3 MB in the beginning and 349.6 MB in the end (delta: -342.5 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:15:14,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 388.0 MB. Free memory was 349.6 MB in the beginning and 346.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 00:15:14,466 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 ms. Allocated memory is still 388.0 MB. Free memory was 346.4 MB in the beginning and 345.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:15:14,467 INFO L168 Benchmark]: RCFGBuilder took 365.49 ms. Allocated memory is still 388.0 MB. Free memory was 345.4 MB in the beginning and 321.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 00:15:14,467 INFO L168 Benchmark]: TraceAbstraction took 3335.63 ms. Allocated memory was 388.0 MB in the beginning and 859.8 MB in the end (delta: 471.9 MB). Free memory was 321.3 MB in the beginning and 763.9 MB in the end (delta: -442.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.0 GB. [2021-06-05 00:15:14,472 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 388.0 MB. Free memory was 367.9 MB in the beginning and 367.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 452.68 ms. Allocated memory is still 388.0 MB. Free memory was 349.3 MB in the beginning and 349.6 MB in the end (delta: -342.5 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 388.0 MB. Free memory was 349.6 MB in the beginning and 346.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.48 ms. Allocated memory is still 388.0 MB. Free memory was 346.4 MB in the beginning and 345.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 365.49 ms. Allocated memory is still 388.0 MB. Free memory was 345.4 MB in the beginning and 321.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3335.63 ms. Allocated memory was 388.0 MB in the beginning and 859.8 MB in the end (delta: 471.9 MB). Free memory was 321.3 MB in the beginning and 763.9 MB in the end (delta: -442.6 MB). Peak memory consumption was 29.3 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: 3243.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 96.0ms, AutomataDifference: 1316.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 355.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 763 SDtfs, 1268 SDslu, 2556 SDs, 0 SdLazy, 317 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 216.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 869.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 481.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 768 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 152.6ms SatisfiabilityAnalysisTime, 661.7ms InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 1544 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...