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-EXP.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_3_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:28:18,673 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:28:18,675 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:28:18,695 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:28:18,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:28:18,697 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:28:18,698 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:28:18,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:28:18,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:28:18,704 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:28:18,705 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:28:18,705 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:28:18,706 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:28:18,707 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:28:18,709 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:28:18,709 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:28:18,710 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:28:18,712 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:28:18,714 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:28:18,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:28:18,717 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:28:18,718 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:28:18,721 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:28:18,730 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 12:28:18,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:28:18,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:28:18,747 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:28:18,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:28:18,747 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:28:18,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:28:18,748 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:28:18,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:28:18,748 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:28:18,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:28:18,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:28:18,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:28:18,749 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:28:18,749 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:28:18,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:28:18,750 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:28:18,750 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:28:18,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:28:18,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:28:18,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:28:18,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:28:18,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:28:18,751 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:28:18,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:28:18,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:28:18,752 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:28:18,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:28:18,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:28:18,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:28:18,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:28:18,753 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:28:18,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:28:18,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:28:18,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:28:18,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:28:18,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:28:18,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:28:18,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:28:18,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:28:18,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:28:18,819 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:28:18,820 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-10-24 12:28:18,881 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/424ab5358/59c33af19f614dff835177a1071b09d1/FLAG9dc716981 [2018-10-24 12:28:19,330 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:28:19,331 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-10-24 12:28:19,337 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/424ab5358/59c33af19f614dff835177a1071b09d1/FLAG9dc716981 [2018-10-24 12:28:19,353 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/424ab5358/59c33af19f614dff835177a1071b09d1 [2018-10-24 12:28:19,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:28:19,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:28:19,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:28:19,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:28:19,373 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:28:19,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7077a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19, skipping insertion in model container [2018-10-24 12:28:19,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:28:19,411 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:28:19,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:28:19,625 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:28:19,645 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:28:19,664 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:28:19,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19 WrapperNode [2018-10-24 12:28:19,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:28:19,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:28:19,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:28:19,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:28:19,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:28:19,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:28:19,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:28:19,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:28:19,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2018-10-24 12:28:19,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:28:19,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:28:19,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:28:19,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:28:19,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (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 12:28:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:28:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:28:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2018-10-24 12:28:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2018-10-24 12:28:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:28:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:28:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:28:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:28:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:28:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:28:20,095 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:28:20,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:20 BoogieIcfgContainer [2018-10-24 12:28:20,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:28:20,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:28:20,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:28:20,111 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:28:20,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:28:19" (1/3) ... [2018-10-24 12:28:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b0d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:20, skipping insertion in model container [2018-10-24 12:28:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (2/3) ... [2018-10-24 12:28:20,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8b0d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:20, skipping insertion in model container [2018-10-24 12:28:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:20" (3/3) ... [2018-10-24 12:28:20,121 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3_true-unreach-call_false-termination.i [2018-10-24 12:28:20,152 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:28:20,169 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:28:20,194 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:28:20,253 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:28:20,253 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:28:20,253 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:28:20,253 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:28:20,253 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:28:20,254 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:28:20,254 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:28:20,254 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:28:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-24 12:28:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 12:28:20,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:28:20,282 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:28:20,285 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:28:20,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:28:20,291 INFO L82 PathProgramCache]: Analyzing trace with hash -337279170, now seen corresponding path program 1 times [2018-10-24 12:28:20,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:28:20,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:20,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:28:20,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:20,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:28:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:28:20,407 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 12:28:20,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:28:20,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:28:20,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:28:20,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:28:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:28:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:28:20,428 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-24 12:28:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:28:20,454 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-10-24 12:28:20,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:28:20,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-24 12:28:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:28:20,468 INFO L225 Difference]: With dead ends: 39 [2018-10-24 12:28:20,472 INFO L226 Difference]: Without dead ends: 19 [2018-10-24 12:28:20,478 INFO L605 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 [2018-10-24 12:28:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-24 12:28:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-24 12:28:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-24 12:28:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-24 12:28:20,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-10-24 12:28:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:28:20,522 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-24 12:28:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:28:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-24 12:28:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 12:28:20,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:28:20,525 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:28:20,525 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:28:20,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:28:20,526 INFO L82 PathProgramCache]: Analyzing trace with hash 672764537, now seen corresponding path program 1 times [2018-10-24 12:28:20,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:28:20,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:20,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:28:20,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:28:20,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:28:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:28:20,635 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 12:28:20,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:28:20,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:28:20,636 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:28:20,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:28:20,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:28:20,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:28:20,639 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2018-10-24 12:28:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:28:20,751 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-24 12:28:20,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:28:20,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-24 12:28:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:28:20,754 INFO L225 Difference]: With dead ends: 19 [2018-10-24 12:28:20,754 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:28:20,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:28:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:28:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:28:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:28:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:28:20,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-24 12:28:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:28:20,760 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:28:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:28:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:28:20,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:28:20,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:28:20,866 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:28:20,866 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:28:20,867 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:28:20,867 INFO L421 ceAbstractionStarter]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= ~x~0 0)) [2018-10-24 12:28:20,867 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 17) no Hoare annotation was computed. [2018-10-24 12:28:20,867 INFO L425 ceAbstractionStarter]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2018-10-24 12:28:20,867 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 12 19) no Hoare annotation was computed. [2018-10-24 12:28:20,868 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:28:20,868 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2018-10-24 12:28:20,868 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:28:20,868 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:28:20,868 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-10-24 12:28:20,869 INFO L421 ceAbstractionStarter]: At program point L27(lines 22 33) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= ~x~0 0)) [2018-10-24 12:28:20,870 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= ~x~0 0)) [2018-10-24 12:28:20,870 INFO L421 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= ~x~0 0)) [2018-10-24 12:28:20,870 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2018-10-24 12:28:20,870 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 28) no Hoare annotation was computed. [2018-10-24 12:28:20,871 INFO L421 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2018-10-24 12:28:20,871 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2018-10-24 12:28:20,871 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:28:20,871 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:28:20,871 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:28:20,872 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:28:20,872 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:28:20,872 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:28:20,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:28:20 BoogieIcfgContainer [2018-10-24 12:28:20,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:28:20,879 INFO L168 Benchmark]: Toolchain (without parser) took 1512.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -774.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:28:20,882 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 12:28:20,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.84 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 12:28:20,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.12 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 12:28:20,890 INFO L168 Benchmark]: Boogie Preprocessor took 27.98 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 12:28:20,891 INFO L168 Benchmark]: RCFGBuilder took 379.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:28:20,892 INFO L168 Benchmark]: TraceAbstraction took 778.46 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2018-10-24 12:28:20,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 295.84 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 25.12 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 27.98 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 379.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 778.46 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 16 SDslu, 26 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 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 correct! Received shutdown request...