/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/verifythis/tree_max_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:09:46,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:09:46,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:09:46,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:09:46,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:09:46,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:09:46,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:09:46,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:09:46,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:09:46,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:09:46,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:09:46,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:09:46,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:09:46,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:09:46,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:09:46,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:09:46,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:09:46,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:09:46,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:09:46,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:09:46,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:09:46,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:09:46,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:09:46,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:09:46,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:09:46,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:09:46,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:09:46,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:09:46,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:09:46,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:09:46,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:09:46,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:09:46,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:09:46,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:09:46,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:09:46,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:09:46,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:09:46,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:09:46,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:09:46,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:09:46,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:09:46,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:09:46,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:09:46,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:09:46,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:09:46,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:09:46,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:09:46,834 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:09:46,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:09:46,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:09:46,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:09:46,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:09:46,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:09:46,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:09:46,835 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:09:47,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:09:47,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:09:47,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:09:47,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:09:47,274 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:09:47,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_max_incorrect.c [2020-11-07 05:09:47,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e781f9ea0/53ef4a97f79643fcb2960ddbf4050238/FLAGc9394e550 [2020-11-07 05:09:47,908 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:09:47,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_max_incorrect.c [2020-11-07 05:09:47,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e781f9ea0/53ef4a97f79643fcb2960ddbf4050238/FLAGc9394e550 [2020-11-07 05:09:48,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e781f9ea0/53ef4a97f79643fcb2960ddbf4050238 [2020-11-07 05:09:48,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:09:48,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:09:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:09:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:09:48,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:09:48,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1963ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48, skipping insertion in model container [2020-11-07 05:09:48,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:09:48,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:09:48,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:09:48,549 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:09:48,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:09:48,594 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:09:48,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48 WrapperNode [2020-11-07 05:09:48,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:09:48,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:09:48,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:09:48,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:09:48,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (1/1) ... [2020-11-07 05:09:48,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:09:48,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:09:48,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:09:48,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:09:48,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (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 [2020-11-07 05:09:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:09:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 05:09:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-11-07 05:09:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:09:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:09:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:09:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:09:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 05:09:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:09:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:09:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:09:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:09:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:09:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 05:09:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:09:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-11-07 05:09:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:09:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:09:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:09:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:09:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:09:49,411 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:09:49,411 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:09:49,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:09:49 BoogieIcfgContainer [2020-11-07 05:09:49,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:09:49,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:09:49,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:09:49,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:09:49,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:09:48" (1/3) ... [2020-11-07 05:09:49,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b9ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:09:49, skipping insertion in model container [2020-11-07 05:09:49,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:09:48" (2/3) ... [2020-11-07 05:09:49,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b9ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:09:49, skipping insertion in model container [2020-11-07 05:09:49,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:09:49" (3/3) ... [2020-11-07 05:09:49,429 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2020-11-07 05:09:49,447 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:09:49,452 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:09:49,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:09:49,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:09:49,503 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:09:49,503 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:09:49,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:09:49,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:09:49,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:09:49,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:09:49,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:09:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-11-07 05:09:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:09:49,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:49,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:49,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1346864638, now seen corresponding path program 1 times [2020-11-07 05:09:49,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:49,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396802114] [2020-11-07 05:09:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-07 05:09:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-07 05:09:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:09:50,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396802114] [2020-11-07 05:09:50,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:09:50,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 05:09:50,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241800510] [2020-11-07 05:09:50,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 05:09:50,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:50,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 05:09:50,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:09:50,190 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 10 states. [2020-11-07 05:09:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:51,416 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2020-11-07 05:09:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 05:09:51,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-07 05:09:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:51,430 INFO L225 Difference]: With dead ends: 144 [2020-11-07 05:09:51,430 INFO L226 Difference]: Without dead ends: 80 [2020-11-07 05:09:51,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-07 05:09:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-07 05:09:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-07 05:09:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-07 05:09:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-07 05:09:51,508 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 39 [2020-11-07 05:09:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:51,509 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-07 05:09:51,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 05:09:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-07 05:09:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-07 05:09:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:51,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:51,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:09:51,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:51,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -513693314, now seen corresponding path program 1 times [2020-11-07 05:09:51,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:51,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566522392] [2020-11-07 05:09:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:09:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-07 05:09:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-07 05:09:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:09:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 05:09:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:09:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:09:51,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566522392] [2020-11-07 05:09:51,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:09:51,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 05:09:51,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649378457] [2020-11-07 05:09:51,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:09:51,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:09:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:09:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:09:51,909 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 12 states. [2020-11-07 05:09:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:09:52,695 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2020-11-07 05:09:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:09:52,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-11-07 05:09:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:09:52,698 INFO L225 Difference]: With dead ends: 106 [2020-11-07 05:09:52,699 INFO L226 Difference]: Without dead ends: 82 [2020-11-07 05:09:52,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-11-07 05:09:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-07 05:09:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-11-07 05:09:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-07 05:09:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-11-07 05:09:52,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 60 [2020-11-07 05:09:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:09:52,725 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-11-07 05:09:52,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:09:52,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-11-07 05:09:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 05:09:52,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:09:52,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:09:52,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:09:52,729 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:09:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:09:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash -646048036, now seen corresponding path program 1 times [2020-11-07 05:09:52,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:09:52,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858477850] [2020-11-07 05:09:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:09:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:09:52,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:09:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:09:52,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:09:52,882 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:09:52,882 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:09:52,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:09:52,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:09:52 BoogieIcfgContainer [2020-11-07 05:09:52,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:09:52,974 INFO L168 Benchmark]: Toolchain (without parser) took 4692.89 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 97.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 60.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:09:52,975 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 142.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:09:52,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 05:09:52,977 INFO L168 Benchmark]: Boogie Preprocessor took 42.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:09:52,978 INFO L168 Benchmark]: RCFGBuilder took 774.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 90.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:09:52,979 INFO L168 Benchmark]: TraceAbstraction took 3551.86 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.2 MB in the beginning and 97.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:09:52,983 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 151.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 142.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 774.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 90.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3551.86 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.2 MB in the beginning and 97.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] CALL, EXPR nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) VAL [__VERIFIER_nondet_bool()=0] [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L24] n->data = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2147483647, malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() VAL [__VERIFIER_nondet_bool()=1] [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() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() VAL [__VERIFIER_nondet_bool()=1] [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() VAL [malloc(sizeof(struct node))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L27] return n; VAL [\result={-1:0}, malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L60] RET, EXPR nondet_tree() VAL [nondet_tree()={-1:0}] [L60] CALL task(nondet_tree()) VAL [n={-1:0}] [L55] CALL, EXPR max(n) VAL [n={-1:0}] [L32] COND FALSE !(!n) VAL [n={-1:0}, n={-1:0}] [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 VAL [n={0:0}, n={0:0}] [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); VAL [a=-2147483648, max(n->left)=-2147483648, n={-1:0}, n={-1:0}, n->left={0:0}] [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 VAL [n={0:0}, n={0:0}] [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); VAL [a=-2147483648, b=-2147483648, max(n->right)=-2147483648, n={-1:0}, n={-1:0}, n->right={0:0}] [L37] COND TRUE a >= b VAL [a=-2147483648, b=-2147483648, n={-1:0}, n={-1:0}] [L37] return a; VAL [\result=-2147483648, a=-2147483648, b=-2147483648, n={-1:0}, n={-1:0}] [L55] RET, EXPR max(n) VAL [max(n)=-2147483648, n={-1:0}, n={-1:0}] [L55] int a = max(n); VAL [a=-2147483648, max(n)=-2147483648, n={-1:0}, n={-1:0}] [L56] CALL check(n, a) VAL [\old(a)=-2147483648, n={-1:0}] [L43] COND TRUE \read(*n) VAL [\old(a)=-2147483648, a=-2147483648, n={-1:0}, n={-1:0}] [L44] EXPR n->data VAL [\old(a)=-2147483648, a=-2147483648, n={-1:0}, n={-1:0}, n->data=-2147483647] [L44] CALL __VERIFIER_assert(n->data <= a) VAL [\old(cond)=0] [L11] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L11] CALL reach_error() [L9] __assert_fail("0", "tree_max_incorrect.c", 9, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 269 SDslu, 458 SDs, 0 SdLazy, 941 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 21391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 11/11 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...