java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:58:42,351 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:58:42,353 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:58:42,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:58:42,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:58:42,372 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:58:42,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:58:42,376 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:58:42,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:58:42,386 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:58:42,387 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:58:42,387 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:58:42,388 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:58:42,389 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:58:42,390 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:58:42,391 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:58:42,392 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:58:42,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:58:42,396 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:58:42,397 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:58:42,399 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:58:42,400 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:58:42,402 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:58:42,402 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:58:42,403 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:58:42,403 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:58:42,404 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:58:42,405 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:58:42,406 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:58:42,407 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:58:42,407 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:58:42,408 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:58:42,408 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:58:42,409 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:58:42,409 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:58:42,410 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:58:42,411 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:58:42,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:58:42,432 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:58:42,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:58:42,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:58:42,433 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:58:42,433 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:58:42,433 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:58:42,434 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:58:42,435 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:58:42,435 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:58:42,436 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:58:42,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:58:42,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:58:42,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:58:42,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:58:42,437 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:58:42,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:58:42,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:58:42,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:58:42,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:58:42,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:58:42,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:58:42,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:58:42,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:58:42,440 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:58:42,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:58:42,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:58:42,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:58:42,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:58:42,441 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:58:42,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:58:42,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:58:42,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:58:42,528 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:58:42,528 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:58:42,529 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i [2018-11-07 21:58:42,596 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ff94fa3/96e90d332c6a49aba317d89681b04e71/FLAGd9ed825e0 [2018-11-07 21:58:43,067 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:58:43,068 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20_false-unreach-call_true-termination.i [2018-11-07 21:58:43,075 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ff94fa3/96e90d332c6a49aba317d89681b04e71/FLAGd9ed825e0 [2018-11-07 21:58:43,091 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ff94fa3/96e90d332c6a49aba317d89681b04e71 [2018-11-07 21:58:43,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:58:43,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:58:43,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:58:43,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:58:43,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:58:43,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ab8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43, skipping insertion in model container [2018-11-07 21:58:43,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:58:43,154 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:58:43,354 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:58:43,358 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:58:43,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:58:43,395 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:58:43,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43 WrapperNode [2018-11-07 21:58:43,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:58:43,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:58:43,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:58:43,400 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:58:43,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:58:43,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:58:43,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:58:43,425 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:58:43,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (1/1) ... [2018-11-07 21:58:43,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:58:43,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:58:43,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:58:43,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:58:43,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (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 [2018-11-07 21:58:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:58:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:58:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:58:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:58:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:58:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:58:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 21:58:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 21:58:43,938 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:58:43,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:58:43 BoogieIcfgContainer [2018-11-07 21:58:43,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:58:43,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:58:43,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:58:43,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:58:43,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:58:43" (1/3) ... [2018-11-07 21:58:43,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08b648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:58:43, skipping insertion in model container [2018-11-07 21:58:43,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:58:43" (2/3) ... [2018-11-07 21:58:43,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08b648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:58:43, skipping insertion in model container [2018-11-07 21:58:43,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:58:43" (3/3) ... [2018-11-07 21:58:43,948 INFO L112 eAbstractionObserver]: Analyzing ICFG nec20_false-unreach-call_true-termination.i [2018-11-07 21:58:43,957 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:58:43,964 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:58:43,979 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:58:44,014 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:58:44,014 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:58:44,015 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:58:44,015 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:58:44,015 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:58:44,015 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:58:44,015 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:58:44,015 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:58:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-07 21:58:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 21:58:44,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:44,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:44,044 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:44,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash -692556335, now seen corresponding path program 1 times [2018-11-07 21:58:44,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:44,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:44,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:58:44,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:58:44,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 21:58:44,172 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:58:44,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 21:58:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 21:58:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 21:58:44,192 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-07 21:58:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:58:44,217 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-11-07 21:58:44,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 21:58:44,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-07 21:58:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:58:44,228 INFO L225 Difference]: With dead ends: 41 [2018-11-07 21:58:44,228 INFO L226 Difference]: Without dead ends: 17 [2018-11-07 21:58:44,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 21:58:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-07 21:58:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-07 21:58:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-07 21:58:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-07 21:58:44,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2018-11-07 21:58:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:58:44,271 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-07 21:58:44,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 21:58:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-07 21:58:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 21:58:44,272 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:44,272 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:44,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:44,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:44,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1300152753, now seen corresponding path program 1 times [2018-11-07 21:58:44,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:44,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:44,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:58:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:58:44,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:58:44,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:58:44,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:58:44,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:58:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:58:44,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:58:44,380 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-11-07 21:58:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:58:44,469 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-07 21:58:44,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:58:44,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-07 21:58:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:58:44,470 INFO L225 Difference]: With dead ends: 25 [2018-11-07 21:58:44,470 INFO L226 Difference]: Without dead ends: 19 [2018-11-07 21:58:44,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:58:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-07 21:58:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-07 21:58:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-07 21:58:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-07 21:58:44,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-11-07 21:58:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:58:44,477 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-07 21:58:44,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:58:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-07 21:58:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 21:58:44,478 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:58:44,478 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:58:44,479 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:58:44,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:58:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1885893483, now seen corresponding path program 1 times [2018-11-07 21:58:44,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:58:44,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:58:44,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:58:44,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:58:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 21:58:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-07 21:58:44,531 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-07 21:58:44,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:58:44 BoogieIcfgContainer [2018-11-07 21:58:44,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:58:44,563 INFO L168 Benchmark]: Toolchain (without parser) took 1459.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -761.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:58:44,565 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:58:44,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:44,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:58:44,568 INFO L168 Benchmark]: Boogie Preprocessor took 22.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:58:44,568 INFO L168 Benchmark]: RCFGBuilder took 492.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:44,570 INFO L168 Benchmark]: TraceAbstraction took 620.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:58:44,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 24.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 492.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 620.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int b; VAL [\old(b)=1026, b=0] [L13] _Bool k=__VERIFIER_nondet_bool(); [L14] int i,n,j; [L15] int a[1025]; VAL [b=0, k=1] [L17] COND TRUE \read(k) [L18] n=0 VAL [b=0, k=1, n=0] [L23] i=0 [L24] j=__VERIFIER_nondet_int() [L25] COND FALSE !(j > 10000) VAL [b=0, i=0, j=1023, k=1, n=0] [L28] COND TRUE i <= n [L29] i++ [L30] j= j +2 VAL [b=0, i=1, j=1025, k=1, n=0] [L28] COND FALSE !(i <= n) VAL [b=0, i=1, j=1025, k=1, n=0] [L33] a[i]=0 [L34] a[j]=0 VAL [b=0, i=1, j=1025, k=1, n=0] [L35] CALL __VERIFIER_assert(j<1025) VAL [\old(cond)=0, b=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, b=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, b=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 7 SDslu, 19 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...