/usr/bin/java -Xmx8000000000 -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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:19:36,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:19:36,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:19:36,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:19:36,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:19:36,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:19:36,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:19:36,131 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 [2021-06-12 17:19:36,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:19:36,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:19:36,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:19:36,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:19:36,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:19:36,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:19:36,170 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:19:36,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:19:36,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:19:36,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:19:36,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:19:36,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:19:36,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:19:36,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:19:36,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:19:36,173 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:19:36,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:19:36,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:19:36,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:19:36,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:19:36,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:19:36,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:19:36,385 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:19:36,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-06-12 17:19:36,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa86c37f8/0f9420bebea9412fb995ff166ec4340a/FLAG5c7c06923 [2021-06-12 17:19:36,841 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:19:36,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-06-12 17:19:36,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa86c37f8/0f9420bebea9412fb995ff166ec4340a/FLAG5c7c06923 [2021-06-12 17:19:36,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa86c37f8/0f9420bebea9412fb995ff166ec4340a [2021-06-12 17:19:36,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:19:36,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:19:36,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:19:36,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:19:36,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:19:36,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:19:36" (1/1) ... [2021-06-12 17:19:36,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dff6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:36, skipping insertion in model container [2021-06-12 17:19:36,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:19:36" (1/1) ... [2021-06-12 17:19:36,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:19:36,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:19:37,058 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] [2021-06-12 17:19:37,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:19:37,207 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:19:37,218 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] [2021-06-12 17:19:37,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:19:37,293 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:19:37,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37 WrapperNode [2021-06-12 17:19:37,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:19:37,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:19:37,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:19:37,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:19:37,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:19:37,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:19:37,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:19:37,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:19:37,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (1/1) ... [2021-06-12 17:19:37,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:19:37,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:19:37,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:19:37,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:19:37,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (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 [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:19:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:19:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:19:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:19:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:19:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:19:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:19:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:19:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:19:37,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:19:37,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:19:37,687 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:19:37,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:19:37 BoogieIcfgContainer [2021-06-12 17:19:37,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:19:37,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:19:37,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:19:37,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:19:37,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:19:36" (1/3) ... [2021-06-12 17:19:37,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b2b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:19:37, skipping insertion in model container [2021-06-12 17:19:37,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:19:37" (2/3) ... [2021-06-12 17:19:37,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117b2b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:19:37, skipping insertion in model container [2021-06-12 17:19:37,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:19:37" (3/3) ... [2021-06-12 17:19:37,693 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-06-12 17:19:37,696 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:19:37,697 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:19:37,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:19:37,697 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:19:37,715 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,717 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,721 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,721 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,724 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,725 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,725 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,726 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,726 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:19:37,728 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:19:37,748 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:19:37,759 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:19:37,759 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:19:37,760 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:19:37,760 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:19:37,760 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:19:37,760 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:19:37,760 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:19:37,760 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:19:37,766 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-06-12 17:19:38,068 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) [2021-06-12 17:19:38,094 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) [2021-06-12 17:19:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 17:19:38,116 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:38,117 INFO L472 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] [2021-06-12 17:19:38,117 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:38,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-06-12 17:19:38,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:38,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934538979] [2021-06-12 17:19:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:38,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:38,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934538979] [2021-06-12 17:19:38,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934538979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:38,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:38,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:19:38,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480915381] [2021-06-12 17:19:38,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:19:38,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:38,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:19:38,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:19:38,458 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) [2021-06-12 17:19:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:38,831 INFO L93 Difference]: Finished difference Result 15166 states and 51710 transitions. [2021-06-12 17:19:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:19:38,832 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 [2021-06-12 17:19:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:38,872 INFO L225 Difference]: With dead ends: 15166 [2021-06-12 17:19:38,872 INFO L226 Difference]: Without dead ends: 4888 [2021-06-12 17:19:38,873 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 158.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:19:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2021-06-12 17:19:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4168. [2021-06-12 17:19:39,020 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) [2021-06-12 17:19:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 13775 transitions. [2021-06-12 17:19:39,037 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 13775 transitions. Word has length 48 [2021-06-12 17:19:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:39,040 INFO L482 AbstractCegarLoop]: Abstraction has 4168 states and 13775 transitions. [2021-06-12 17:19:39,041 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) [2021-06-12 17:19:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 13775 transitions. [2021-06-12 17:19:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-12 17:19:39,051 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:39,051 INFO L472 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] [2021-06-12 17:19:39,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:19:39,051 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1479617994, now seen corresponding path program 1 times [2021-06-12 17:19:39,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:39,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905706407] [2021-06-12 17:19:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:39,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:39,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905706407] [2021-06-12 17:19:39,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905706407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:39,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:39,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:19:39,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854796089] [2021-06-12 17:19:39,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:19:39,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:39,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:19:39,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:19:39,216 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) [2021-06-12 17:19:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:39,469 INFO L93 Difference]: Finished difference Result 6512 states and 21207 transitions. [2021-06-12 17:19:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 17:19:39,469 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 [2021-06-12 17:19:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:39,490 INFO L225 Difference]: With dead ends: 6512 [2021-06-12 17:19:39,490 INFO L226 Difference]: Without dead ends: 4880 [2021-06-12 17:19:39,491 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-12 17:19:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2021-06-12 17:19:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4160. [2021-06-12 17:19:39,601 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) [2021-06-12 17:19:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 13681 transitions. [2021-06-12 17:19:39,616 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 13681 transitions. Word has length 50 [2021-06-12 17:19:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:39,617 INFO L482 AbstractCegarLoop]: Abstraction has 4160 states and 13681 transitions. [2021-06-12 17:19:39,617 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) [2021-06-12 17:19:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 13681 transitions. [2021-06-12 17:19:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-12 17:19:39,624 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:39,624 INFO L472 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] [2021-06-12 17:19:39,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:19:39,624 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash 941492503, now seen corresponding path program 1 times [2021-06-12 17:19:39,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:39,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218889872] [2021-06-12 17:19:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:39,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:39,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218889872] [2021-06-12 17:19:39,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218889872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:39,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:39,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:19:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67717934] [2021-06-12 17:19:39,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:19:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:19:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:19:39,716 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) [2021-06-12 17:19:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:39,859 INFO L93 Difference]: Finished difference Result 6124 states and 19913 transitions. [2021-06-12 17:19:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:19:39,861 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 [2021-06-12 17:19:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:39,874 INFO L225 Difference]: With dead ends: 6124 [2021-06-12 17:19:39,875 INFO L226 Difference]: Without dead ends: 3604 [2021-06-12 17:19:39,881 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:19:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-06-12 17:19:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3124. [2021-06-12 17:19:39,941 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) [2021-06-12 17:19:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 9997 transitions. [2021-06-12 17:19:39,948 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 9997 transitions. Word has length 52 [2021-06-12 17:19:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:39,950 INFO L482 AbstractCegarLoop]: Abstraction has 3124 states and 9997 transitions. [2021-06-12 17:19:39,950 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) [2021-06-12 17:19:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 9997 transitions. [2021-06-12 17:19:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-12 17:19:39,959 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:39,959 INFO L472 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] [2021-06-12 17:19:39,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:19:39,959 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:39,959 INFO L82 PathProgramCache]: Analyzing trace with hash 442357815, now seen corresponding path program 1 times [2021-06-12 17:19:39,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:39,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494365564] [2021-06-12 17:19:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:40,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:40,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494365564] [2021-06-12 17:19:40,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494365564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:40,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:40,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:19:40,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777342073] [2021-06-12 17:19:40,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:19:40,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:19:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:19:40,077 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) [2021-06-12 17:19:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:40,163 INFO L93 Difference]: Finished difference Result 3444 states and 10953 transitions. [2021-06-12 17:19:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:19:40,164 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 [2021-06-12 17:19:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:40,174 INFO L225 Difference]: With dead ends: 3444 [2021-06-12 17:19:40,174 INFO L226 Difference]: Without dead ends: 2884 [2021-06-12 17:19:40,174 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:19:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-06-12 17:19:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2021-06-12 17:19:40,218 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) [2021-06-12 17:19:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 9177 transitions. [2021-06-12 17:19:40,224 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 9177 transitions. Word has length 52 [2021-06-12 17:19:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:40,224 INFO L482 AbstractCegarLoop]: Abstraction has 2884 states and 9177 transitions. [2021-06-12 17:19:40,224 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) [2021-06-12 17:19:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 9177 transitions. [2021-06-12 17:19:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:19:40,229 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:40,229 INFO L472 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] [2021-06-12 17:19:40,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:19:40,229 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:40,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-06-12 17:19:40,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:40,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144036077] [2021-06-12 17:19:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:40,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:40,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144036077] [2021-06-12 17:19:40,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144036077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:40,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:40,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:19:40,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466961893] [2021-06-12 17:19:40,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:19:40,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:40,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:19:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:19:40,305 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) [2021-06-12 17:19:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:40,393 INFO L93 Difference]: Finished difference Result 3655 states and 11511 transitions. [2021-06-12 17:19:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:19:40,393 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 [2021-06-12 17:19:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:40,400 INFO L225 Difference]: With dead ends: 3655 [2021-06-12 17:19:40,400 INFO L226 Difference]: Without dead ends: 2695 [2021-06-12 17:19:40,401 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:19:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-06-12 17:19:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2021-06-12 17:19:40,441 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) [2021-06-12 17:19:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 8466 transitions. [2021-06-12 17:19:40,446 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 8466 transitions. Word has length 54 [2021-06-12 17:19:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:40,446 INFO L482 AbstractCegarLoop]: Abstraction has 2695 states and 8466 transitions. [2021-06-12 17:19:40,446 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) [2021-06-12 17:19:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 8466 transitions. [2021-06-12 17:19:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-12 17:19:40,453 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:40,453 INFO L472 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] [2021-06-12 17:19:40,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:19:40,453 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:40,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-06-12 17:19:40,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:40,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841822421] [2021-06-12 17:19:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:40,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:40,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841822421] [2021-06-12 17:19:40,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841822421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:40,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:40,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:19:40,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404517921] [2021-06-12 17:19:40,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:19:40,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:19:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:19:40,531 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) [2021-06-12 17:19:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:40,623 INFO L93 Difference]: Finished difference Result 2929 states and 8991 transitions. [2021-06-12 17:19:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:19:40,623 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 [2021-06-12 17:19:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:40,628 INFO L225 Difference]: With dead ends: 2929 [2021-06-12 17:19:40,628 INFO L226 Difference]: Without dead ends: 2101 [2021-06-12 17:19:40,629 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:19:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-06-12 17:19:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2101. [2021-06-12 17:19:40,675 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) [2021-06-12 17:19:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 6348 transitions. [2021-06-12 17:19:40,678 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 6348 transitions. Word has length 55 [2021-06-12 17:19:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:40,678 INFO L482 AbstractCegarLoop]: Abstraction has 2101 states and 6348 transitions. [2021-06-12 17:19:40,678 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) [2021-06-12 17:19:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 6348 transitions. [2021-06-12 17:19:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:19:40,681 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:40,681 INFO L472 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] [2021-06-12 17:19:40,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:19:40,681 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-06-12 17:19:40,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:40,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080726505] [2021-06-12 17:19:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:40,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:40,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080726505] [2021-06-12 17:19:40,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080726505] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:40,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:40,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:19:40,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769154542] [2021-06-12 17:19:40,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:19:40,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:40,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:19:40,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:19:40,755 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) [2021-06-12 17:19:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:40,858 INFO L93 Difference]: Finished difference Result 1849 states and 5454 transitions. [2021-06-12 17:19:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:19:40,858 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 [2021-06-12 17:19:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:40,860 INFO L225 Difference]: With dead ends: 1849 [2021-06-12 17:19:40,860 INFO L226 Difference]: Without dead ends: 993 [2021-06-12 17:19:40,860 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:19:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-06-12 17:19:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 945. [2021-06-12 17:19:40,872 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) [2021-06-12 17:19:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2713 transitions. [2021-06-12 17:19:40,874 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2713 transitions. Word has length 57 [2021-06-12 17:19:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:40,874 INFO L482 AbstractCegarLoop]: Abstraction has 945 states and 2713 transitions. [2021-06-12 17:19:40,874 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) [2021-06-12 17:19:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2713 transitions. [2021-06-12 17:19:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-12 17:19:40,875 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:19:40,875 INFO L472 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] [2021-06-12 17:19:40,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:19:40,875 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:19:40,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:19:40,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1781698532, now seen corresponding path program 1 times [2021-06-12 17:19:40,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:19:40,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275715119] [2021-06-12 17:19:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:19:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:19:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:19:40,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:19:40,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275715119] [2021-06-12 17:19:40,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275715119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:19:40,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:19:40,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:19:40,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963326758] [2021-06-12 17:19:40,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:19:40,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:19:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:19:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:19:40,954 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) [2021-06-12 17:19:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:19:41,004 INFO L93 Difference]: Finished difference Result 891 states and 2551 transitions. [2021-06-12 17:19:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:19:41,004 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 [2021-06-12 17:19:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:19:41,004 INFO L225 Difference]: With dead ends: 891 [2021-06-12 17:19:41,004 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:19:41,004 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:19:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:19:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:19:41,005 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) [2021-06-12 17:19:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:19:41,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-12 17:19:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:19:41,005 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:19:41,005 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) [2021-06-12 17:19:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:19:41,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:19:41,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:19:41,007 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:19:41,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:19:41 BasicIcfg [2021-06-12 17:19:41,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:19:41,009 INFO L168 Benchmark]: Toolchain (without parser) took 4130.40 ms. Allocated memory was 200.3 MB in the beginning and 428.9 MB in the end (delta: 228.6 MB). Free memory was 164.6 MB in the beginning and 245.7 MB in the end (delta: -81.1 MB). Peak memory consumption was 148.4 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,010 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 200.3 MB. Free memory is still 182.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:19:41,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.38 ms. Allocated memory is still 200.3 MB. Free memory was 164.4 MB in the beginning and 163.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 200.3 MB. Free memory was 163.2 MB in the beginning and 161.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,016 INFO L168 Benchmark]: Boogie Preprocessor took 14.17 ms. Allocated memory is still 200.3 MB. Free memory was 161.1 MB in the beginning and 159.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,016 INFO L168 Benchmark]: RCFGBuilder took 332.18 ms. Allocated memory is still 200.3 MB. Free memory was 159.7 MB in the beginning and 136.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,016 INFO L168 Benchmark]: TraceAbstraction took 3319.81 ms. Allocated memory was 200.3 MB in the beginning and 428.9 MB in the end (delta: 228.6 MB). Free memory was 136.3 MB in the beginning and 245.7 MB in the end (delta: -109.4 MB). Peak memory consumption was 119.9 MB. Max. memory is 8.0 GB. [2021-06-12 17:19:41,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 200.3 MB. Free memory is still 182.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 413.38 ms. Allocated memory is still 200.3 MB. Free memory was 164.4 MB in the beginning and 163.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 200.3 MB. Free memory was 163.2 MB in the beginning and 161.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.17 ms. Allocated memory is still 200.3 MB. Free memory was 161.1 MB in the beginning and 159.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 332.18 ms. Allocated memory is still 200.3 MB. Free memory was 159.7 MB in the beginning and 136.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3319.81 ms. Allocated memory was 200.3 MB in the beginning and 428.9 MB in the end (delta: 228.6 MB). Free memory was 136.3 MB in the beginning and 245.7 MB in the end (delta: -109.4 MB). Peak memory consumption was 119.9 MB. Max. memory is 8.0 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3247.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 85.6ms, AutomataDifference: 1320.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 308.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 782 SDtfs, 1434 SDslu, 2719 SDs, 0 SdLazy, 363 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 240.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 841.8ms 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: 505.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1968 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.8ms SsaConstructionTime, 122.0ms SatisfiabilityAnalysisTime, 737.3ms 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...