java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:14:39,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:14:39,674 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:14:39,686 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:14:39,686 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:14:39,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:14:39,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:14:39,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:14:39,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:14:39,693 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:14:39,694 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:14:39,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:14:39,695 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:14:39,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:14:39,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:14:39,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:14:39,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:14:39,703 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:14:39,709 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:14:39,710 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:14:39,711 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:14:39,713 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:14:39,717 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:14:39,730 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 12:14:39,745 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:14:39,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:14:39,746 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:14:39,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:14:39,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:14:39,746 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:14:39,747 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:14:39,747 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:14:39,747 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:14:39,747 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:14:39,747 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:14:39,748 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:14:39,748 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:14:39,748 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:14:39,749 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:14:39,750 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:14:39,750 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:14:39,750 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:14:39,750 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:14:39,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:14:39,751 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:14:39,751 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:14:39,751 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:14:39,751 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:14:39,751 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:14:39,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:14:39,752 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:14:39,752 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:14:39,752 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:14:39,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:14:39,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:14:39,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:14:39,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:14:39,827 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:14:39,828 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-24 12:14:39,884 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dad9dbef/a3027c08c2b74ed8b82a463bd9c8da5a/FLAG264fe965e [2018-10-24 12:14:40,364 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:14:40,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-24 12:14:40,372 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dad9dbef/a3027c08c2b74ed8b82a463bd9c8da5a/FLAG264fe965e [2018-10-24 12:14:40,393 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5dad9dbef/a3027c08c2b74ed8b82a463bd9c8da5a [2018-10-24 12:14:40,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:14:40,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:14:40,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:14:40,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:14:40,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:14:40,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c32df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40, skipping insertion in model container [2018-10-24 12:14:40,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:14:40,458 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:14:40,629 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:14:40,633 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:14:40,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:14:40,666 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:14:40,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40 WrapperNode [2018-10-24 12:14:40,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:14:40,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:14:40,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:14:40,668 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:14:40,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:14:40,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:14:40,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:14:40,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:14:40,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... [2018-10-24 12:14:40,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:14:40,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:14:40,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:14:40,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:14:40,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:14:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:14:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:14:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:14:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:14:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:14:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:14:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:14:40,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:14:41,206 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:14:41,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:14:41 BoogieIcfgContainer [2018-10-24 12:14:41,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:14:41,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:14:41,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:14:41,219 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:14:41,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:14:40" (1/3) ... [2018-10-24 12:14:41,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ad2624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:14:41, skipping insertion in model container [2018-10-24 12:14:41,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:14:40" (2/3) ... [2018-10-24 12:14:41,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ad2624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:14:41, skipping insertion in model container [2018-10-24 12:14:41,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:14:41" (3/3) ... [2018-10-24 12:14:41,227 INFO L112 eAbstractionObserver]: Analyzing ICFG id_trans_false-unreach-call_true-termination.i [2018-10-24 12:14:41,240 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:14:41,247 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:14:41,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:14:41,296 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:14:41,296 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:14:41,296 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:14:41,297 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:14:41,297 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:14:41,297 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:14:41,297 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:14:41,297 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:14:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-24 12:14:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:14:41,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:14:41,328 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:14:41,330 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:14:41,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:14:41,335 INFO L82 PathProgramCache]: Analyzing trace with hash -243865802, now seen corresponding path program 1 times [2018-10-24 12:14:41,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:14:41,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:41,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:14:41,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:41,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:14:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:14:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:14:41,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:14:41,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:14:41,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:14:41,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:14:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:14:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:14:41,594 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-10-24 12:14:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:14:41,784 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-10-24 12:14:41,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:14:41,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-24 12:14:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:14:41,796 INFO L225 Difference]: With dead ends: 48 [2018-10-24 12:14:41,796 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 12:14:41,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:14:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 12:14:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-24 12:14:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-24 12:14:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-24 12:14:41,847 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2018-10-24 12:14:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:14:41,847 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-24 12:14:41,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:14:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-24 12:14:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 12:14:41,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:14:41,849 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:14:41,850 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:14:41,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:14:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash 662571400, now seen corresponding path program 1 times [2018-10-24 12:14:41,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:14:41,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:41,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:14:41,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:41,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:14:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:14:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:14:42,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:14:42,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:14:42,197 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-10-24 12:14:42,198 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [17], [29], [32], [34], [37], [39], [40], [41], [42], [44], [45], [46] [2018-10-24 12:14:42,245 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:14:42,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:14:42,387 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 12:14:42,444 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 12:14:42,447 INFO L272 AbstractInterpreter]: Visited 15 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-10-24 12:14:42,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:14:42,455 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 12:14:42,607 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 56.25% of their original sizes. [2018-10-24 12:14:42,607 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 12:14:42,951 INFO L413 sIntCurrentIteration]: We have 16 unified AI predicates [2018-10-24 12:14:42,952 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 12:14:42,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:14:42,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-10-24 12:14:42,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:14:42,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:14:42,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:14:42,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:14:42,955 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2018-10-24 12:14:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:14:43,861 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-10-24 12:14:43,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:14:43,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-10-24 12:14:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:14:43,863 INFO L225 Difference]: With dead ends: 40 [2018-10-24 12:14:43,863 INFO L226 Difference]: Without dead ends: 38 [2018-10-24 12:14:43,864 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-24 12:14:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-24 12:14:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-10-24 12:14:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-24 12:14:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-10-24 12:14:43,886 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 17 [2018-10-24 12:14:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:14:43,886 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-10-24 12:14:43,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:14:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-10-24 12:14:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 12:14:43,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:14:43,890 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:14:43,890 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:14:43,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:14:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash -366649848, now seen corresponding path program 1 times [2018-10-24 12:14:43,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:14:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:43,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:14:43,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:14:43,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:14:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:14:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-24 12:14:43,973 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-24 12:14:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:14:43 BoogieIcfgContainer [2018-10-24 12:14:43,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:14:43,995 INFO L168 Benchmark]: Toolchain (without parser) took 3586.91 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -630.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:14:43,997 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 12:14:43,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.90 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. [2018-10-24 12:14:43,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.55 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. [2018-10-24 12:14:43,999 INFO L168 Benchmark]: Boogie Preprocessor took 33.50 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. [2018-10-24 12:14:44,000 INFO L168 Benchmark]: RCFGBuilder took 481.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:14:44,001 INFO L168 Benchmark]: TraceAbstraction took 2777.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:14:44,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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. * CACSL2BoogieTranslator took 256.90 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 23.55 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 33.50 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 481.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2777.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] __VERIFIER_assert( 0 <= j) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] __VERIFIER_assert( j < material_length ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNSAFE Result, 2.7s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 20 SDslu, 125 SDs, 0 SdLazy, 31 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9140625 AbsIntWeakeningRatio, 0.625 AbsIntAvgWeakeningVarsNumRemoved, 6.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 903 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...