/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 00:18:05,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 00:18:05,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 00:18:06,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 00:18:06,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 00:18:06,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 00:18:06,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 00:18:06,070 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 00:18:06,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 00:18:06,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 00:18:06,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 00:18:06,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 00:18:06,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 00:18:06,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 00:18:06,109 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 00:18:06,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 00:18:06,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 00:18:06,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 00:18:06,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 00:18:06,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 00:18:06,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 00:18:06,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 00:18:06,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 00:18:06,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 00:18:06,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 00:18:06,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 00:18:06,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 00:18:06,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 00:18:06,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 00:18:06,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 00:18:06,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 00:18:06,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 00:18:06,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 00:18:06,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 00:18:06,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 00:18:06,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 00:18:06,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 00:18:06,433 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 00:18:06,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-06-05 00:18:06,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947832483/bfcd03f8e26f45bdb0bacd75b6b7b573/FLAG7909e95b4 [2021-06-05 00:18:06,994 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 00:18:06,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-06-05 00:18:07,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947832483/bfcd03f8e26f45bdb0bacd75b6b7b573/FLAG7909e95b4 [2021-06-05 00:18:07,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947832483/bfcd03f8e26f45bdb0bacd75b6b7b573 [2021-06-05 00:18:07,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 00:18:07,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 00:18:07,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 00:18:07,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 00:18:07,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 00:18:07,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:07,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd557c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07, skipping insertion in model container [2021-06-05 00:18:07,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:07,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 00:18:07,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 00:18:07,750 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/safe031_tso.oepc.i[950,963] [2021-06-05 00:18:07,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:18:07,870 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 00:18:07,880 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/safe031_tso.oepc.i[950,963] [2021-06-05 00:18:07,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:18:07,979 INFO L208 MainTranslator]: Completed translation [2021-06-05 00:18:07,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07 WrapperNode [2021-06-05 00:18:07,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 00:18:07,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 00:18:07,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 00:18:07,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 00:18:07,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 00:18:08,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 00:18:08,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 00:18:08,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 00:18:08,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (1/1) ... [2021-06-05 00:18:08,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 00:18:08,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 00:18:08,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 00:18:08,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 00:18:08,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (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 00:18:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 00:18:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 00:18:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 00:18:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 00:18:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 00:18:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 00:18:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 00:18:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 00:18:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 00:18:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 00:18:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 00:18:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 00:18:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 00:18:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 00:18:08,167 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 00:18:08,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 00:18:08,573 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 00:18:08,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:18:08 BoogieIcfgContainer [2021-06-05 00:18:08,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 00:18:08,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 00:18:08,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 00:18:08,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 00:18:08,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:18:07" (1/3) ... [2021-06-05 00:18:08,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242af56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:18:08, skipping insertion in model container [2021-06-05 00:18:08,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:07" (2/3) ... [2021-06-05 00:18:08,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242af56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:18:08, skipping insertion in model container [2021-06-05 00:18:08,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:18:08" (3/3) ... [2021-06-05 00:18:08,582 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-06-05 00:18:08,590 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 00:18:08,590 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 00:18:08,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 00:18:08,591 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,640 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,645 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:08,651 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 00:18:08,671 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 00:18:08,698 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 00:18:08,698 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 00:18:08,699 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 00:18:08,699 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 00:18:08,699 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 00:18:08,699 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 00:18:08,699 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 00:18:08,699 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 00:18:08,714 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 00:18:09,212 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 00:18:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 00:18:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 00:18:09,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:09,302 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 00:18:09,303 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2019691919, now seen corresponding path program 1 times [2021-06-05 00:18:09,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:09,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464849450] [2021-06-05 00:18:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:09,724 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 00:18:09,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:09,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464849450] [2021-06-05 00:18:09,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464849450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:09,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:09,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:09,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753139780] [2021-06-05 00:18:09,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:09,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:09,819 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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 00:18:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:10,253 INFO L93 Difference]: Finished difference Result 21594 states and 74453 transitions. [2021-06-05 00:18:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:10,255 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 00:18:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:10,322 INFO L225 Difference]: With dead ends: 21594 [2021-06-05 00:18:10,323 INFO L226 Difference]: Without dead ends: 7075 [2021-06-05 00:18:10,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7075 states. [2021-06-05 00:18:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7075 to 5827. [2021-06-05 00:18:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 5826 states have (on average 3.3201167181599724) internal successors, (19343), 5826 states have internal predecessors, (19343), 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 00:18:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 19343 transitions. [2021-06-05 00:18:10,729 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 19343 transitions. Word has length 48 [2021-06-05 00:18:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:10,732 INFO L482 AbstractCegarLoop]: Abstraction has 5827 states and 19343 transitions. [2021-06-05 00:18:10,733 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 00:18:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 19343 transitions. [2021-06-05 00:18:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 00:18:10,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:10,751 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 00:18:10,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 00:18:10,752 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:10,755 INFO L82 PathProgramCache]: Analyzing trace with hash 686279184, now seen corresponding path program 1 times [2021-06-05 00:18:10,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:10,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015786105] [2021-06-05 00:18:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:10,977 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 00:18:10,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:10,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015786105] [2021-06-05 00:18:10,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015786105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:10,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:10,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:10,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745944458] [2021-06-05 00:18:10,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:10,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:10,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:10,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:10,981 INFO L87 Difference]: Start difference. First operand 5827 states and 19343 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 00:18:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:11,284 INFO L93 Difference]: Finished difference Result 8291 states and 27260 transitions. [2021-06-05 00:18:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 00:18:11,285 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 00:18:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:11,322 INFO L225 Difference]: With dead ends: 8291 [2021-06-05 00:18:11,322 INFO L226 Difference]: Without dead ends: 6655 [2021-06-05 00:18:11,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 212.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 00:18:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6655 states. [2021-06-05 00:18:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 5647. [2021-06-05 00:18:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5647 states, 5646 states have (on average 3.3048175699610343) internal successors, (18659), 5646 states have internal predecessors, (18659), 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 00:18:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 18659 transitions. [2021-06-05 00:18:11,547 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 18659 transitions. Word has length 50 [2021-06-05 00:18:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:11,547 INFO L482 AbstractCegarLoop]: Abstraction has 5647 states and 18659 transitions. [2021-06-05 00:18:11,547 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 00:18:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 18659 transitions. [2021-06-05 00:18:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 00:18:11,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:11,557 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 00:18:11,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 00:18:11,557 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:11,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:11,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1441415890, now seen corresponding path program 1 times [2021-06-05 00:18:11,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:11,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991490609] [2021-06-05 00:18:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:11,640 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 00:18:11,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:11,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991490609] [2021-06-05 00:18:11,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991490609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:11,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:11,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:11,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928064192] [2021-06-05 00:18:11,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:11,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:11,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:11,642 INFO L87 Difference]: Start difference. First operand 5647 states and 18659 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:11,759 INFO L93 Difference]: Finished difference Result 6207 states and 20392 transitions. [2021-06-05 00:18:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 00:18:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:11,781 INFO L225 Difference]: With dead ends: 6207 [2021-06-05 00:18:11,782 INFO L226 Difference]: Without dead ends: 5227 [2021-06-05 00:18:11,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5227 states. [2021-06-05 00:18:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5227 to 5163. [2021-06-05 00:18:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 3.283029833397908) internal successors, (16947), 5162 states have internal predecessors, (16947), 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 00:18:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 16947 transitions. [2021-06-05 00:18:11,977 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 16947 transitions. Word has length 50 [2021-06-05 00:18:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:11,979 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 16947 transitions. [2021-06-05 00:18:11,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 16947 transitions. [2021-06-05 00:18:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 00:18:11,990 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:11,990 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 00:18:11,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 00:18:11,990 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1344167279, now seen corresponding path program 1 times [2021-06-05 00:18:11,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:11,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83721688] [2021-06-05 00:18:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:12,167 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 00:18:12,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:12,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83721688] [2021-06-05 00:18:12,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83721688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:12,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:12,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:12,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726788965] [2021-06-05 00:18:12,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:12,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:12,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:12,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:12,170 INFO L87 Difference]: Start difference. First operand 5163 states and 16947 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) [2021-06-05 00:18:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:12,287 INFO L93 Difference]: Finished difference Result 6338 states and 20435 transitions. [2021-06-05 00:18:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:12,287 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 [2021-06-05 00:18:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:12,304 INFO L225 Difference]: With dead ends: 6338 [2021-06-05 00:18:12,304 INFO L226 Difference]: Without dead ends: 4678 [2021-06-05 00:18:12,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-06-05 00:18:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4678. [2021-06-05 00:18:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4677 states have (on average 3.215095146461407) internal successors, (15037), 4677 states have internal predecessors, (15037), 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 00:18:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 15037 transitions. [2021-06-05 00:18:12,426 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 15037 transitions. Word has length 52 [2021-06-05 00:18:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:12,426 INFO L482 AbstractCegarLoop]: Abstraction has 4678 states and 15037 transitions. [2021-06-05 00:18:12,426 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) [2021-06-05 00:18:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 15037 transitions. [2021-06-05 00:18:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 00:18:12,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:12,437 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, 1, 1, 1, 1] [2021-06-05 00:18:12,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 00:18:12,438 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash -613291728, now seen corresponding path program 1 times [2021-06-05 00:18:12,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:12,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490702311] [2021-06-05 00:18:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:12,521 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 00:18:12,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:12,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490702311] [2021-06-05 00:18:12,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490702311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:12,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:12,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:12,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681070868] [2021-06-05 00:18:12,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:12,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:12,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:12,524 INFO L87 Difference]: Start difference. First operand 4678 states and 15037 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 00:18:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:12,725 INFO L93 Difference]: Finished difference Result 4678 states and 14575 transitions. [2021-06-05 00:18:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:18:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 00:18:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:12,735 INFO L225 Difference]: With dead ends: 4678 [2021-06-05 00:18:12,735 INFO L226 Difference]: Without dead ends: 3274 [2021-06-05 00:18:12,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:18:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-06-05 00:18:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3174. [2021-06-05 00:18:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 3.05641348881185) internal successors, (9698), 3173 states have internal predecessors, (9698), 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 00:18:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 9698 transitions. [2021-06-05 00:18:12,808 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 9698 transitions. Word has length 54 [2021-06-05 00:18:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:12,809 INFO L482 AbstractCegarLoop]: Abstraction has 3174 states and 9698 transitions. [2021-06-05 00:18:12,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 00:18:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 9698 transitions. [2021-06-05 00:18:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 00:18:12,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:12,816 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] [2021-06-05 00:18:12,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 00:18:12,816 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2023776045, now seen corresponding path program 1 times [2021-06-05 00:18:12,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:12,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440622292] [2021-06-05 00:18:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:12,910 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 00:18:12,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:12,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440622292] [2021-06-05 00:18:12,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440622292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:12,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:12,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:12,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800494352] [2021-06-05 00:18:12,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:12,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:12,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:12,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:12,913 INFO L87 Difference]: Start difference. First operand 3174 states and 9698 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 00:18:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:13,091 INFO L93 Difference]: Finished difference Result 3824 states and 11529 transitions. [2021-06-05 00:18:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 00:18:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-06-05 00:18:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:13,098 INFO L225 Difference]: With dead ends: 3824 [2021-06-05 00:18:13,099 INFO L226 Difference]: Without dead ends: 2636 [2021-06-05 00:18:13,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 00:18:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-06-05 00:18:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2186. [2021-06-05 00:18:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 2.948741418764302) internal successors, (6443), 2185 states have internal predecessors, (6443), 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 00:18:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6443 transitions. [2021-06-05 00:18:13,151 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6443 transitions. Word has length 56 [2021-06-05 00:18:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:13,151 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6443 transitions. [2021-06-05 00:18:13,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 00:18:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6443 transitions. [2021-06-05 00:18:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 00:18:13,156 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:13,156 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] [2021-06-05 00:18:13,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 00:18:13,156 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1599141549, now seen corresponding path program 1 times [2021-06-05 00:18:13,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:13,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185935314] [2021-06-05 00:18:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:13,225 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 00:18:13,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:13,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185935314] [2021-06-05 00:18:13,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185935314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:13,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:13,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:13,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326300544] [2021-06-05 00:18:13,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:13,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:13,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:13,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:13,227 INFO L87 Difference]: Start difference. First operand 2186 states and 6443 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 00:18:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:13,323 INFO L93 Difference]: Finished difference Result 2903 states and 8553 transitions. [2021-06-05 00:18:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 00:18:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-06-05 00:18:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:13,330 INFO L225 Difference]: With dead ends: 2903 [2021-06-05 00:18:13,330 INFO L226 Difference]: Without dead ends: 2342 [2021-06-05 00:18:13,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 00:18:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-06-05 00:18:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2180. [2021-06-05 00:18:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 2.945387792565397) internal successors, (6418), 2179 states have internal predecessors, (6418), 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 00:18:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 6418 transitions. [2021-06-05 00:18:13,390 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 6418 transitions. Word has length 56 [2021-06-05 00:18:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:13,391 INFO L482 AbstractCegarLoop]: Abstraction has 2180 states and 6418 transitions. [2021-06-05 00:18:13,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 00:18:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 6418 transitions. [2021-06-05 00:18:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 00:18:13,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:13,395 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] [2021-06-05 00:18:13,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 00:18:13,396 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash -197508683, now seen corresponding path program 2 times [2021-06-05 00:18:13,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:13,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241854597] [2021-06-05 00:18:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:13,521 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 00:18:13,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:13,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241854597] [2021-06-05 00:18:13,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241854597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:13,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:13,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 00:18:13,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528547156] [2021-06-05 00:18:13,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 00:18:13,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:13,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 00:18:13,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 00:18:13,523 INFO L87 Difference]: Start difference. First operand 2180 states and 6418 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 00:18:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:13,611 INFO L93 Difference]: Finished difference Result 1505 states and 4303 transitions. [2021-06-05 00:18:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 00:18:13,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 56 [2021-06-05 00:18:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:13,612 INFO L225 Difference]: With dead ends: 1505 [2021-06-05 00:18:13,612 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 00:18:13,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:18:13,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 00:18:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 00:18:13,613 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 00:18:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 00:18:13,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2021-06-05 00:18:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:13,613 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 00:18:13,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 00:18:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 00:18:13,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 00:18:13,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 00:18:13,615 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 00:18:13,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:18:13 BasicIcfg [2021-06-05 00:18:13,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 00:18:13,620 INFO L168 Benchmark]: Toolchain (without parser) took 6089.16 ms. Allocated memory was 333.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 295.4 MB in the beginning and 1.2 GB in the end (delta: -914.2 MB). Peak memory consumption was 181.0 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,621 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:18:13,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.21 ms. Allocated memory is still 333.4 MB. Free memory was 295.2 MB in the beginning and 295.2 MB in the end (delta: 55.0 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.35 ms. Allocated memory is still 333.4 MB. Free memory was 295.2 MB in the beginning and 293.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,624 INFO L168 Benchmark]: Boogie Preprocessor took 32.91 ms. Allocated memory is still 333.4 MB. Free memory was 293.1 MB in the beginning and 292.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,625 INFO L168 Benchmark]: RCFGBuilder took 498.94 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 266.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,627 INFO L168 Benchmark]: TraceAbstraction took 5040.80 ms. Allocated memory was 333.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 265.8 MB in the beginning and 1.2 GB in the end (delta: -943.9 MB). Peak memory consumption was 153.0 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:13,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 333.4 MB. Free memory was 313.9 MB in the beginning and 313.8 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 439.21 ms. Allocated memory is still 333.4 MB. Free memory was 295.2 MB in the beginning and 295.2 MB in the end (delta: 55.0 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.35 ms. Allocated memory is still 333.4 MB. Free memory was 295.2 MB in the beginning and 293.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.91 ms. Allocated memory is still 333.4 MB. Free memory was 293.1 MB in the beginning and 292.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 498.94 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 266.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5040.80 ms. Allocated memory was 333.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 265.8 MB in the beginning and 1.2 GB in the end (delta: -943.9 MB). Peak memory consumption was 153.0 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, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4918.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 152.1ms, AutomataDifference: 1802.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 512.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 881 SDtfs, 1247 SDslu, 2809 SDs, 0 SdLazy, 306 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 269.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1033.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1051.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 3032 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.1ms SsaConstructionTime, 195.5ms SatisfiabilityAnalysisTime, 908.7ms InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 1784 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...