/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:31:56,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:31:56,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:31:56,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:31:56,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:31:56,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:31:56,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:31:56,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:31:56,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:31:56,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:31:56,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:31:56,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:31:56,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:31:56,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:31:56,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:31:56,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:31:56,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:31:56,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:31:56,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:31:56,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:31:56,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:31:56,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:31:56,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:31:56,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:31:56,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:31:56,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:31:56,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:31:56,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:31:56,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:31:56,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:31:56,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:31:56,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:31:56,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:31:56,952 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:31:56,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:31:56,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:31:56,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:31:56,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:31:56,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:31:56,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:31:56,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:31:56,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:31:56,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:31:56,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:31:56,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:31:56,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:31:56,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:31:56,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:31:56,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:31:56,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:31:56,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:31:56,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:31:56,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:31:56,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:31:56,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:31:56,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:31:56,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:31:56,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:31:56,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:31:57,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:31:57,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:31:57,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:31:57,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:31:57,281 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:31:57,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-07 11:31:57,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c7c122e/e7eac6a34a9e4f47ac5d59ff529240f9/FLAGaab037cd9 [2020-07-07 11:31:57,903 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:31:57,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-07 11:31:57,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c7c122e/e7eac6a34a9e4f47ac5d59ff529240f9/FLAGaab037cd9 [2020-07-07 11:31:58,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c7c122e/e7eac6a34a9e4f47ac5d59ff529240f9 [2020-07-07 11:31:58,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:31:58,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:31:58,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:58,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:31:58,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:31:58,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c77b054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58, skipping insertion in model container [2020-07-07 11:31:58,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:31:58,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:31:58,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:58,483 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:31:58,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:58,526 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:31:58,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58 WrapperNode [2020-07-07 11:31:58,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:58,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:31:58,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:31:58,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:31:58,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (1/1) ... [2020-07-07 11:31:58,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:31:58,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:31:58,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:31:58,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:31:58,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (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 [2020-07-07 11:31:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:31:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:31:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:31:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:31:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:31:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:31:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:31:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:31:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:31:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:31:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:31:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:31:59,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:31:59,118 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 11:31:59,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:59 BoogieIcfgContainer [2020-07-07 11:31:59,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:31:59,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:31:59,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:31:59,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:31:59,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:31:58" (1/3) ... [2020-07-07 11:31:59,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c82ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:59, skipping insertion in model container [2020-07-07 11:31:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:58" (2/3) ... [2020-07-07 11:31:59,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c82ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:59, skipping insertion in model container [2020-07-07 11:31:59,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:59" (3/3) ... [2020-07-07 11:31:59,131 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-07-07 11:31:59,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:31:59,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:31:59,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:31:59,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:31:59,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:31:59,192 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:31:59,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:31:59,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:31:59,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:31:59,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:31:59,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:31:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-07 11:31:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:31:59,218 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:59,219 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] [2020-07-07 11:31:59,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-07-07 11:31:59,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:59,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39869095] [2020-07-07 11:31:59,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:31:59,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39869095] [2020-07-07 11:31:59,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:59,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:59,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095407938] [2020-07-07 11:31:59,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:59,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:59,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:59,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:59,454 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-07-07 11:31:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:59,602 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-07-07 11:31:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:59,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-07 11:31:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:59,614 INFO L225 Difference]: With dead ends: 70 [2020-07-07 11:31:59,615 INFO L226 Difference]: Without dead ends: 35 [2020-07-07 11:31:59,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-07 11:31:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-07 11:31:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 11:31:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-07-07 11:31:59,659 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-07-07 11:31:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:59,660 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-07-07 11:31:59,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-07-07 11:31:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:31:59,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:59,662 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] [2020-07-07 11:31:59,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:31:59,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-07-07 11:31:59,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:59,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174406578] [2020-07-07 11:31:59,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:59,693 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:31:59,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484768655] [2020-07-07 11:31:59,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:31:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:59,777 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:31:59,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:31:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:31:59,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174406578] [2020-07-07 11:31:59,852 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:31:59,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484768655] [2020-07-07 11:31:59,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:59,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:31:59,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765351668] [2020-07-07 11:31:59,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:31:59,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:59,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:31:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:31:59,859 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-07-07 11:31:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:59,994 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2020-07-07 11:31:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:31:59,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-07 11:31:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:59,999 INFO L225 Difference]: With dead ends: 67 [2020-07-07 11:31:59,999 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:32:00,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:32:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:32:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-07-07 11:32:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-07 11:32:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-07-07 11:32:00,017 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2020-07-07 11:32:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:00,018 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-07-07 11:32:00,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:32:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-07-07 11:32:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:32:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:00,020 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] [2020-07-07 11:32:00,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:32:00,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:00,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1796917477, now seen corresponding path program 1 times [2020-07-07 11:32:00,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:00,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824277238] [2020-07-07 11:32:00,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:00,300 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:00,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979569978] [2020-07-07 11:32:00,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:00,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:32:00,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:32:00,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824277238] [2020-07-07 11:32:00,383 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:32:00,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979569978] [2020-07-07 11:32:00,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:00,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:00,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157380984] [2020-07-07 11:32:00,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:00,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:00,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:00,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:00,386 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-07-07 11:32:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:00,464 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-07-07 11:32:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:00,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-07 11:32:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:00,467 INFO L225 Difference]: With dead ends: 72 [2020-07-07 11:32:00,467 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:32:00,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:32:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2020-07-07 11:32:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 11:32:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-07 11:32:00,476 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 33 [2020-07-07 11:32:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:00,477 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-07 11:32:00,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-07 11:32:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:32:00,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:00,478 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] [2020-07-07 11:32:00,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:00,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1817991449, now seen corresponding path program 1 times [2020-07-07 11:32:00,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:00,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950631245] [2020-07-07 11:32:00,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:00,733 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:00,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12865747] [2020-07-07 11:32:00,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:00,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:00,856 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:01,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:01,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:01 BoogieIcfgContainer [2020-07-07 11:32:01,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:01,122 INFO L168 Benchmark]: Toolchain (without parser) took 2884.22 ms. Allocated memory was 136.3 MB in the beginning and 229.1 MB in the end (delta: 92.8 MB). Free memory was 100.2 MB in the beginning and 175.4 MB in the end (delta: -75.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,122 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.90 ms. Allocated memory is still 136.3 MB. Free memory was 99.7 MB in the beginning and 89.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,125 INFO L168 Benchmark]: Boogie Preprocessor took 129.46 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 89.2 MB in the beginning and 177.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,125 INFO L168 Benchmark]: RCFGBuilder took 465.34 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 158.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,127 INFO L168 Benchmark]: TraceAbstraction took 1995.55 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 158.4 MB in the beginning and 175.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:01,131 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.90 ms. Allocated memory is still 136.3 MB. Free memory was 99.7 MB in the beginning and 89.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.46 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 89.2 MB in the beginning and 177.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.34 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 158.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1995.55 ms. Allocated memory was 200.3 MB in the beginning and 229.1 MB in the end (delta: 28.8 MB). Free memory was 158.4 MB in the beginning and 175.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=4, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={-2:0}, b={1:0}, c={-1:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L30] COND TRUE i