/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/tree_max_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:28:19,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:28:19,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:28:19,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:28:19,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:28:19,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:28:19,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:28:19,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:28:19,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:28:19,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:28:19,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:28:19,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:28:19,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:28:19,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:28:19,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:28:19,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:28:19,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:28:19,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:28:19,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:28:19,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:28:19,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:28:19,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:28:19,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:28:19,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:28:19,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 09:28:19,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:28:19,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:28:19,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:28:19,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:28:19,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:28:19,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:28:19,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:28:19,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:28:19,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:28:19,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:28:19,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:28:19,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:28:19,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:28:19,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:28:19,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:28:19,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:28:19,213 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:28:19,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:28:19,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:28:19,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:28:19,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:28:19,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:28:19,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:28:19,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:28:19,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:28:19,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:28:19,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:28:19,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:28:19,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:28:19,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:28:19,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:28:19,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:28:19,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:28:19,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:28:19,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:28:19,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:28:19,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:28:19,219 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:28:19,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:28:19,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:28:19,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:28:19,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:28:19,684 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:28:19,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2020-12-23 09:28:19,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301e3abc7/33d4f8d00ae34f16a55db9de072ef6a7/FLAGb8fdf9dd9 [2020-12-23 09:28:20,377 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:28:20,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2020-12-23 09:28:20,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301e3abc7/33d4f8d00ae34f16a55db9de072ef6a7/FLAGb8fdf9dd9 [2020-12-23 09:28:20,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/301e3abc7/33d4f8d00ae34f16a55db9de072ef6a7 [2020-12-23 09:28:20,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:28:20,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:28:20,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:28:20,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:28:20,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:28:20,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:28:20" (1/1) ... [2020-12-23 09:28:20,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe52783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:20, skipping insertion in model container [2020-12-23 09:28:20,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:28:20" (1/1) ... [2020-12-23 09:28:20,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:28:20,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 09:28:21,006 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],StructAccessExpression[IdentifierExpression[~n~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] [2020-12-23 09:28:21,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:28:21,046 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 09:28:21,061 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],StructAccessExpression[IdentifierExpression[~n~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] [2020-12-23 09:28:21,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:28:21,091 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:28:21,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21 WrapperNode [2020-12-23 09:28:21,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:28:21,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:28:21,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:28:21,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:28:21,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:28:21,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:28:21,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:28:21,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:28:21,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... [2020-12-23 09:28:21,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:28:21,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:28:21,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:28:21,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:28:21,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:28:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 09:28:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-12-23 09:28:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-12-23 09:28:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-12-23 09:28:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-12-23 09:28:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:28:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-12-23 09:28:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-12-23 09:28:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 09:28:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:28:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 09:28:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 09:28:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:28:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:28:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 09:28:21,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:28:21,702 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 09:28:21,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:28:21 BoogieIcfgContainer [2020-12-23 09:28:21,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:28:21,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:28:21,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:28:21,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:28:21,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:28:20" (1/3) ... [2020-12-23 09:28:21,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bb503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:28:21, skipping insertion in model container [2020-12-23 09:28:21,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:28:21" (2/3) ... [2020-12-23 09:28:21,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bb503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:28:21, skipping insertion in model container [2020-12-23 09:28:21,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:28:21" (3/3) ... [2020-12-23 09:28:21,714 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2020-12-23 09:28:21,721 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:28:21,726 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:28:21,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:28:21,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:28:21,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:28:21,775 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:28:21,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:28:21,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:28:21,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:28:21,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:28:21,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:28:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-23 09:28:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 09:28:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:21,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:28:21,804 INFO L429 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash -891537794, now seen corresponding path program 1 times [2020-12-23 09:28:21,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:21,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290448923] [2020-12-23 09:28:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-23 09:28:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-12-23 09:28:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:28:22,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290448923] [2020-12-23 09:28:22,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:22,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:28:22,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748987582] [2020-12-23 09:28:22,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:28:22,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:22,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:28:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:28:22,335 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 8 states. [2020-12-23 09:28:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:22,767 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2020-12-23 09:28:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:28:22,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 09:28:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:22,781 INFO L225 Difference]: With dead ends: 73 [2020-12-23 09:28:22,781 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 09:28:22,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:28:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 09:28:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 09:28:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 09:28:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2020-12-23 09:28:22,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 18 [2020-12-23 09:28:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:22,836 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2020-12-23 09:28:22,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:28:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2020-12-23 09:28:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 09:28:22,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:22,840 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:28:22,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:28:22,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:22,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1509693249, now seen corresponding path program 1 times [2020-12-23 09:28:22,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:22,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468920587] [2020-12-23 09:28:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-23 09:28:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-23 09:28:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 09:28:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-12-23 09:28:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:28:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 09:28:23,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468920587] [2020-12-23 09:28:23,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:28:23,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 09:28:23,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111751113] [2020-12-23 09:28:23,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 09:28:23,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:28:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 09:28:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:28:23,182 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 9 states. [2020-12-23 09:28:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:28:23,428 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-12-23 09:28:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:28:23,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-23 09:28:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:28:23,431 INFO L225 Difference]: With dead ends: 47 [2020-12-23 09:28:23,431 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 09:28:23,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:28:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 09:28:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 09:28:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 09:28:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2020-12-23 09:28:23,444 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2020-12-23 09:28:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:28:23,445 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-12-23 09:28:23,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 09:28:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2020-12-23 09:28:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:28:23,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:28:23,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:28:23,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:28:23,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:28:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:28:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash -896236761, now seen corresponding path program 1 times [2020-12-23 09:28:23,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:28:23,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315822865] [2020-12-23 09:28:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:28:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 09:28:23,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 09:28:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 09:28:23,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 09:28:23,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 09:28:23,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 09:28:23,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:28:23,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 09:28:23 BoogieIcfgContainer [2020-12-23 09:28:23,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 09:28:23,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 09:28:23,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 09:28:23,661 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 09:28:23,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:28:21" (3/4) ... [2020-12-23 09:28:23,664 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 09:28:23,738 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/verifythis/tree_max_incorrect.c-witness.graphml [2020-12-23 09:28:23,739 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 09:28:23,741 INFO L168 Benchmark]: Toolchain (without parser) took 2980.04 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 139.0 MB in the beginning and 132.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,742 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 09:28:23,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.29 ms. Allocated memory is still 163.6 MB. Free memory was 138.8 MB in the beginning and 128.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 163.6 MB. Free memory was 128.6 MB in the beginning and 127.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,744 INFO L168 Benchmark]: Boogie Preprocessor took 31.03 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 125.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,745 INFO L168 Benchmark]: RCFGBuilder took 534.96 ms. Allocated memory is still 163.6 MB. Free memory was 125.9 MB in the beginning and 144.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,746 INFO L168 Benchmark]: TraceAbstraction took 1954.56 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 144.9 MB in the beginning and 136.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,747 INFO L168 Benchmark]: Witness Printer took 77.85 ms. Allocated memory is still 202.4 MB. Free memory was 136.4 MB in the beginning and 132.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:28:23,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.29 ms. Allocated memory is still 163.6 MB. Free memory was 138.8 MB in the beginning and 128.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 163.6 MB. Free memory was 128.6 MB in the beginning and 127.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.03 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 125.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 534.96 ms. Allocated memory is still 163.6 MB. Free memory was 125.9 MB in the beginning and 144.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1954.56 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 144.9 MB in the beginning and 136.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. * Witness Printer took 77.85 ms. Allocated memory is still 202.4 MB. Free memory was 136.4 MB in the beginning and 132.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L60] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={-1:0}, malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L60] RET nondet_tree() [L55] CALL, EXPR max(n) VAL [n={-1:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={-1:0}, n={-1:0}, n->left={0:0}] [L35] CALL, EXPR max(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L35] RET, EXPR max(n->left) VAL [max(n->left)=-2147483648, n={-1:0}, n={-1:0}, n->left={0:0}] [L35] int a = max(n->left); [L36] EXPR n->right VAL [a=-2147483648, n={-1:0}, n={-1:0}, n->right={0:0}] [L36] CALL, EXPR max(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L36] RET, EXPR max(n->right) VAL [a=-2147483648, max(n->right)=-2147483648, n={-1:0}, n={-1:0}, n->right={0:0}] [L36] int b = max(n->right); [L37] COND TRUE a >= b [L37] return a; VAL [\result=-2147483648, a=-2147483648, b=-2147483648, n={-1:0}, n={-1:0}] [L55] RET, EXPR max(n) [L55] int a = max(n); [L56] CALL check(n, a) [L43] COND TRUE \read(*n) [L44] n->data [L11] COND TRUE !cond [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 69 SDslu, 223 SDs, 0 SdLazy, 320 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 5128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 9/9 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 incorrect! Received shutdown request...