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-lit/bhmr2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:16:35,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:16:35,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:16:35,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:16:35,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:16:35,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:16:35,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:16:35,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:16:35,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:16:35,539 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:16:35,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:16:35,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:16:35,541 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:16:35,542 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:16:35,543 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:16:35,544 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:16:35,545 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:16:35,546 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:16:35,548 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:16:35,550 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:16:35,551 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:16:35,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:16:35,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:16:35,562 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 12:16:35,584 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:16:35,585 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:16:35,585 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:16:35,586 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:16:35,586 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:16:35,586 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:16:35,586 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:16:35,586 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:16:35,587 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:16:35,587 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:16:35,587 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:16:35,588 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:16:35,588 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:16:35,588 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:16:35,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:16:35,590 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:16:35,590 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:16:35,590 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:16:35,590 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:16:35,590 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:16:35,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:16:35,591 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:16:35,591 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:16:35,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:16:35,591 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:16:35,592 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:16:35,592 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:16:35,592 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:16:35,592 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:16:35,592 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:16:35,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:16:35,593 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:16:35,593 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:16:35,593 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:16:35,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:16:35,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:16:35,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:16:35,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:16:35,662 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:16:35,663 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-10-24 12:16:35,713 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf8add314/7e22c8d0154a4483a735e45fa28eeaf5/FLAGa39deeffe [2018-10-24 12:16:36,162 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:16:36,163 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-10-24 12:16:36,171 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf8add314/7e22c8d0154a4483a735e45fa28eeaf5/FLAGa39deeffe [2018-10-24 12:16:36,195 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf8add314/7e22c8d0154a4483a735e45fa28eeaf5 [2018-10-24 12:16:36,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:16:36,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:16:36,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:16:36,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:16:36,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:16:36,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa499b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36, skipping insertion in model container [2018-10-24 12:16:36,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:16:36,260 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:16:36,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:16:36,414 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:16:36,433 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:16:36,448 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:16:36,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36 WrapperNode [2018-10-24 12:16:36,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:16:36,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:16:36,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:16:36,450 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:16:36,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:16:36,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:16:36,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:16:36,472 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:16:36,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (1/1) ... [2018-10-24 12:16:36,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:16:36,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:16:36,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:16:36,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:16:36,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (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 12:16:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:16:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:16:36,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:16:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:16:36,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:16:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:16:36,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:16:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:16:36,925 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:16:36,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:16:36 BoogieIcfgContainer [2018-10-24 12:16:36,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:16:36,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:16:36,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:16:36,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:16:36,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:16:36" (1/3) ... [2018-10-24 12:16:36,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474c7498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:16:36, skipping insertion in model container [2018-10-24 12:16:36,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:16:36" (2/3) ... [2018-10-24 12:16:36,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474c7498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:16:36, skipping insertion in model container [2018-10-24 12:16:36,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:16:36" (3/3) ... [2018-10-24 12:16:36,945 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-10-24 12:16:36,963 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:16:36,986 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:16:37,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:16:37,034 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:16:37,035 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:16:37,035 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:16:37,035 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:16:37,035 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:16:37,035 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:16:37,036 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:16:37,036 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:16:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-24 12:16:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:16:37,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:37,061 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:37,064 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:37,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:37,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1421497933, now seen corresponding path program 1 times [2018-10-24 12:16:37,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:37,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:37,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:37,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:37,190 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 12:16:37,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:16:37,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:16:37,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:37,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:16:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:16:37,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:16:37,211 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-24 12:16:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:37,235 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-10-24 12:16:37,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:16:37,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-24 12:16:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:37,249 INFO L225 Difference]: With dead ends: 34 [2018-10-24 12:16:37,250 INFO L226 Difference]: Without dead ends: 15 [2018-10-24 12:16:37,255 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 12:16:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-24 12:16:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-24 12:16:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-24 12:16:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-24 12:16:37,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-10-24 12:16:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:37,299 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-24 12:16:37,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:16:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-10-24 12:16:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:16:37,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:37,300 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:37,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:37,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385422, now seen corresponding path program 1 times [2018-10-24 12:16:37,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:37,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:37,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:37,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:37,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:37,633 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-24 12:16:37,907 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 12:16:37,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:16:37,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 12:16:37,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:16:37,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:16:37,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:16:37,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:16:37,911 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-10-24 12:16:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:38,183 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-10-24 12:16:38,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:16:38,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-24 12:16:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:38,186 INFO L225 Difference]: With dead ends: 23 [2018-10-24 12:16:38,186 INFO L226 Difference]: Without dead ends: 18 [2018-10-24 12:16:38,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 12:16:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-24 12:16:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-10-24 12:16:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-24 12:16:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-24 12:16:38,194 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-10-24 12:16:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:38,195 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-24 12:16:38,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:16:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-24 12:16:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 12:16:38,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:38,196 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:38,196 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:38,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1592010396, now seen corresponding path program 1 times [2018-10-24 12:16:38,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:38,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:38,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:38,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:38,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:38,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:38,731 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:16:38,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-24 12:16:38,734 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [25], [32], [35], [37], [43], [44], [45], [47] [2018-10-24 12:16:38,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:16:38,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:16:39,313 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:16:39,317 INFO L272 AbstractInterpreter]: Visited 15 different actions 150 times. Merged at 5 different actions 75 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-10-24 12:16:39,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:39,339 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:16:39,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:39,340 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:16:39,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:39,355 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:16:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:39,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:16:39,777 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 12:16:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:39,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:16:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:40,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:16:40,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2018-10-24 12:16:40,284 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:16:40,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 12:16:40,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 12:16:40,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:16:40,287 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-10-24 12:16:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:40,773 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-10-24 12:16:40,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 12:16:40,774 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-10-24 12:16:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:40,775 INFO L225 Difference]: With dead ends: 32 [2018-10-24 12:16:40,775 INFO L226 Difference]: Without dead ends: 26 [2018-10-24 12:16:40,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:16:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-24 12:16:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-10-24 12:16:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-24 12:16:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-10-24 12:16:40,782 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-10-24 12:16:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:40,783 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-10-24 12:16:40,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 12:16:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-10-24 12:16:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 12:16:40,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:16:40,784 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:16:40,784 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:16:40,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:40,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2103962116, now seen corresponding path program 1 times [2018-10-24 12:16:40,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:16:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:40,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:16:40,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:16:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:16:41,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:41,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:16:41,105 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-24 12:16:41,106 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [23], [25], [32], [35], [37], [43], [44], [45], [47] [2018-10-24 12:16:41,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:16:41,108 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:16:41,672 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:16:41,673 INFO L272 AbstractInterpreter]: Visited 16 different actions 421 times. Merged at 6 different actions 220 times. Widened at 1 different actions 31 times. Found 39 fixpoints after 2 different actions. Largest state had 6 variables. [2018-10-24 12:16:41,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:16:41,700 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:16:41,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:16:41,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:16:41,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:16:41,718 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:16:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:16:41,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:16:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:16:42,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:16:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 12:16:42,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:16:42,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 22 [2018-10-24 12:16:42,357 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:16:42,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 12:16:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 12:16:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2018-10-24 12:16:42,359 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 17 states. [2018-10-24 12:16:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:16:43,189 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-10-24 12:16:43,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 12:16:43,189 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-10-24 12:16:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:16:43,190 INFO L225 Difference]: With dead ends: 34 [2018-10-24 12:16:43,191 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:16:43,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2018-10-24 12:16:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:16:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:16:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:16:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:16:43,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-10-24 12:16:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:16:43,193 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:16:43,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 12:16:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:16:43,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:16:43,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:16:43,311 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-24 12:16:43,311 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-24 12:16:43,312 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-24 12:16:43,312 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-10-24 12:16:43,313 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2018-10-24 12:16:43,313 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2018-10-24 12:16:43,313 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-24 12:16:43,313 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 23) no Hoare annotation was computed. [2018-10-24 12:16:43,313 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 (* 3 main_~n~0)))) [2018-10-24 12:16:43,313 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-10-24 12:16:43,313 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:16:43,313 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:16:43,313 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:16:43,314 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:16:43,314 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:16:43,314 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:16:43,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:16:43 BoogieIcfgContainer [2018-10-24 12:16:43,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:16:43,327 INFO L168 Benchmark]: Toolchain (without parser) took 7118.58 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -340.3 MB). Peak memory consumption was 422.0 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:43,328 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:16:43,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.57 ms. Allocated memory is still 1.6 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 12:16:43,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.50 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:16:43,331 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 12:16:43,331 INFO L168 Benchmark]: RCFGBuilder took 431.49 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:43,333 INFO L168 Benchmark]: TraceAbstraction took 6399.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.0 MB). Peak memory consumption was 455.0 MB. Max. memory is 7.1 GB. [2018-10-24 12:16:43,338 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.57 ms. Allocated memory is still 1.6 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 21.50 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 431.49 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6399.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.0 MB). Peak memory consumption was 455.0 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (a + b <= 3 * i && 3 * i <= a + b) && a + b <= 3 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 6.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 25 SDslu, 182 SDs, 0 SdLazy, 272 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 18682 SizeOfPredicates, 8 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...