/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:43:11,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:43:11,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:43:11,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:43:11,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:43:11,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:43:11,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:43:11,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:43:11,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:43:11,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:43:11,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:43:11,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:43:11,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:43:11,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:43:11,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:43:11,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:43:11,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:43:11,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:43:11,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:43:11,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:43:11,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:43:11,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:43:11,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:43:11,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:43:11,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:43:11,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:43:11,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:43:11,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:43:11,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:43:11,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:43:11,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:43:11,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:43:11,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:43:11,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:43:11,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:43:11,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:43:11,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:43:11,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:43:11,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:43:11,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:43:11,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:43:11,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 22:43:11,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:43:11,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:43:11,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:43:11,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:43:11,688 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:43:11,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:43:11,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:43:11,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:43:11,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:43:11,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:43:11,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:43:11,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:43:11,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:43:11,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:43:11,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:43:11,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:43:11,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:43:11,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:43:11,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:43:11,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:43:11,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:43:11,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:43:11,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:43:11,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 22:43:11,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:43:11,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:43:11,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:43:11,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 22:43:11,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:43:11,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:43:11,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:43:12,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:43:12,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:43:12,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:43:12,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-21 22:43:12,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c9101a0/b216fc3f78094e5d815db855515a2ba4/FLAGf28383f9f [2020-10-21 22:43:12,631 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:43:12,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-10-21 22:43:12,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c9101a0/b216fc3f78094e5d815db855515a2ba4/FLAGf28383f9f [2020-10-21 22:43:12,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c9101a0/b216fc3f78094e5d815db855515a2ba4 [2020-10-21 22:43:12,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:43:12,898 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:43:12,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:43:12,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:43:12,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:43:12,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:43:12" (1/1) ... [2020-10-21 22:43:12,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705ddd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:12, skipping insertion in model container [2020-10-21 22:43:12,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:43:12" (1/1) ... [2020-10-21 22:43:12,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:43:12,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:43:13,269 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 22:43:13,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:43:13,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:43:13,476 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 22:43:13,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:43:13,598 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:43:13,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13 WrapperNode [2020-10-21 22:43:13,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:43:13,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:43:13,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:43:13,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:43:13,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:43:13,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:43:13,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:43:13,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:43:13,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (1/1) ... [2020-10-21 22:43:13,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:43:13,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:43:13,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:43:13,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:43:13,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (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 [2020-10-21 22:43:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 22:43:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 22:43:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:43:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:43:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:43:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:43:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:43:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:43:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:43:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:43:13,745 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:43:14,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:43:14,088 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-21 22:43:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:43:14 BoogieIcfgContainer [2020-10-21 22:43:14,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:43:14,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:43:14,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:43:14,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:43:14,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:43:12" (1/3) ... [2020-10-21 22:43:14,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ac3f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:43:14, skipping insertion in model container [2020-10-21 22:43:14,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:43:13" (2/3) ... [2020-10-21 22:43:14,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ac3f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:43:14, skipping insertion in model container [2020-10-21 22:43:14,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:43:14" (3/3) ... [2020-10-21 22:43:14,106 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-10-21 22:43:14,124 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:43:14,124 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:43:14,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 22:43:14,133 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:43:14,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:43:14,188 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:43:14,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:43:14,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:43:14,225 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:43:14,225 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 22:43:14,225 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:43:14,225 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:43:14,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:43:14,226 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:43:14,226 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:43:14,240 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 22:43:14,241 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 85 transitions, 175 flow [2020-10-21 22:43:14,244 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 85 transitions, 175 flow [2020-10-21 22:43:14,247 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 85 transitions, 175 flow [2020-10-21 22:43:14,294 INFO L129 PetriNetUnfolder]: 14/84 cut-off events. [2020-10-21 22:43:14,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:43:14,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 14/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-10-21 22:43:14,305 INFO L116 LiptonReduction]: Number of co-enabled transitions 2262 [2020-10-21 22:43:15,395 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-21 22:43:15,651 INFO L131 LiptonReduction]: Checked pairs total: 5992 [2020-10-21 22:43:15,651 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-10-21 22:43:15,658 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 38 transitions, 81 flow [2020-10-21 22:43:15,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 184 states. [2020-10-21 22:43:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-10-21 22:43:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 22:43:15,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:15,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 22:43:15,686 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1998064547, now seen corresponding path program 1 times [2020-10-21 22:43:15,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:15,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048458345] [2020-10-21 22:43:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:15,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048458345] [2020-10-21 22:43:15,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:15,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:15,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509549337] [2020-10-21 22:43:15,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:15,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:15,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:15,912 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-10-21 22:43:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:15,969 INFO L93 Difference]: Finished difference Result 194 states and 415 transitions. [2020-10-21 22:43:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:15,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-21 22:43:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:15,985 INFO L225 Difference]: With dead ends: 194 [2020-10-21 22:43:15,985 INFO L226 Difference]: Without dead ends: 114 [2020-10-21 22:43:15,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-21 22:43:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-10-21 22:43:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-21 22:43:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 240 transitions. [2020-10-21 22:43:16,041 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 240 transitions. Word has length 6 [2020-10-21 22:43:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,042 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 240 transitions. [2020-10-21 22:43:16,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 240 transitions. [2020-10-21 22:43:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 22:43:16,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:16,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 22:43:16,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:43:16,044 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:16,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1996741217, now seen corresponding path program 1 times [2020-10-21 22:43:16,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:16,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102675257] [2020-10-21 22:43:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:16,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102675257] [2020-10-21 22:43:16,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:16,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:16,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12460804] [2020-10-21 22:43:16,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:16,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:16,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:16,091 INFO L87 Difference]: Start difference. First operand 106 states and 240 transitions. Second operand 3 states. [2020-10-21 22:43:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:16,111 INFO L93 Difference]: Finished difference Result 99 states and 218 transitions. [2020-10-21 22:43:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:16,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-21 22:43:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:16,113 INFO L225 Difference]: With dead ends: 99 [2020-10-21 22:43:16,113 INFO L226 Difference]: Without dead ends: 70 [2020-10-21 22:43:16,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-21 22:43:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-21 22:43:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-21 22:43:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2020-10-21 22:43:16,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 6 [2020-10-21 22:43:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,124 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2020-10-21 22:43:16,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2020-10-21 22:43:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:43:16,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:16,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:16,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:43:16,126 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 371229278, now seen corresponding path program 1 times [2020-10-21 22:43:16,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:16,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39519069] [2020-10-21 22:43:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:16,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39519069] [2020-10-21 22:43:16,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:16,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:43:16,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342815802] [2020-10-21 22:43:16,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:43:16,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:16,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:43:16,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:43:16,212 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand 4 states. [2020-10-21 22:43:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:16,250 INFO L93 Difference]: Finished difference Result 94 states and 222 transitions. [2020-10-21 22:43:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:43:16,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 22:43:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:16,252 INFO L225 Difference]: With dead ends: 94 [2020-10-21 22:43:16,252 INFO L226 Difference]: Without dead ends: 68 [2020-10-21 22:43:16,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:43:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-21 22:43:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-21 22:43:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-21 22:43:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 147 transitions. [2020-10-21 22:43:16,261 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 147 transitions. Word has length 9 [2020-10-21 22:43:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,261 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 147 transitions. [2020-10-21 22:43:16,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:43:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 147 transitions. [2020-10-21 22:43:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:43:16,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:16,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:43:16,263 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash -355383778, now seen corresponding path program 2 times [2020-10-21 22:43:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962241933] [2020-10-21 22:43:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:16,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962241933] [2020-10-21 22:43:16,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:16,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:43:16,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904050395] [2020-10-21 22:43:16,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:43:16,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:16,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:43:16,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:43:16,310 INFO L87 Difference]: Start difference. First operand 68 states and 147 transitions. Second operand 4 states. [2020-10-21 22:43:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:16,351 INFO L93 Difference]: Finished difference Result 92 states and 213 transitions. [2020-10-21 22:43:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:43:16,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 22:43:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:16,352 INFO L225 Difference]: With dead ends: 92 [2020-10-21 22:43:16,353 INFO L226 Difference]: Without dead ends: 65 [2020-10-21 22:43:16,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:43:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-21 22:43:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-21 22:43:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-21 22:43:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 138 transitions. [2020-10-21 22:43:16,361 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 138 transitions. Word has length 9 [2020-10-21 22:43:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,362 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 138 transitions. [2020-10-21 22:43:16,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:43:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 138 transitions. [2020-10-21 22:43:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:43:16,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:16,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:16,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:43:16,363 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash -800933246, now seen corresponding path program 1 times [2020-10-21 22:43:16,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:16,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739934386] [2020-10-21 22:43:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:16,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739934386] [2020-10-21 22:43:16,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:16,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:43:16,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946491095] [2020-10-21 22:43:16,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:43:16,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:16,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:43:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:43:16,412 INFO L87 Difference]: Start difference. First operand 65 states and 138 transitions. Second operand 4 states. [2020-10-21 22:43:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:16,451 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-21 22:43:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:43:16,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 22:43:16,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:16,452 INFO L225 Difference]: With dead ends: 44 [2020-10-21 22:43:16,452 INFO L226 Difference]: Without dead ends: 41 [2020-10-21 22:43:16,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:43:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-21 22:43:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-21 22:43:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-21 22:43:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 67 transitions. [2020-10-21 22:43:16,460 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 67 transitions. Word has length 13 [2020-10-21 22:43:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,461 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 67 transitions. [2020-10-21 22:43:16,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:43:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 67 transitions. [2020-10-21 22:43:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:43:16,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:43:16,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:43:16,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:43:16,468 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:43:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:43:16,469 INFO L82 PathProgramCache]: Analyzing trace with hash 862662929, now seen corresponding path program 1 times [2020-10-21 22:43:16,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:43:16,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106245569] [2020-10-21 22:43:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:43:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:43:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:43:16,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106245569] [2020-10-21 22:43:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:43:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:43:16,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209809944] [2020-10-21 22:43:16,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:43:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:43:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:43:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:16,534 INFO L87 Difference]: Start difference. First operand 41 states and 67 transitions. Second operand 3 states. [2020-10-21 22:43:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:43:16,537 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2020-10-21 22:43:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:43:16,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-21 22:43:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:43:16,538 INFO L225 Difference]: With dead ends: 6 [2020-10-21 22:43:16,538 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:43:16,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:43:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:43:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:43:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:43:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:43:16,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-21 22:43:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:43:16,540 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:43:16,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:43:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:43:16,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:43:16,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:43:16,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:43:16 BasicIcfg [2020-10-21 22:43:16,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:43:16,548 INFO L168 Benchmark]: Toolchain (without parser) took 3653.40 ms. Allocated memory was 141.0 MB in the beginning and 243.8 MB in the end (delta: 102.8 MB). Free memory was 101.2 MB in the beginning and 127.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,549 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.64 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.61 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,559 INFO L168 Benchmark]: Boogie Preprocessor took 30.06 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,559 INFO L168 Benchmark]: RCFGBuilder took 410.84 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 133.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,560 INFO L168 Benchmark]: TraceAbstraction took 2452.50 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 132.8 MB in the beginning and 127.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:43:16,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.64 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.61 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.06 ms. Allocated memory is still 204.5 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.84 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 133.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2452.50 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 132.8 MB in the beginning and 127.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1277 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 213 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 75 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 38 TransitionsAfterwards, 2262 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, 5992 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 203 SDtfs, 153 SDslu, 156 SDs, 0 SdLazy, 64 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...