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/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 16:06:47,644 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 16:06:47,646 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 16:06:47,662 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 16:06:47,662 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 16:06:47,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 16:06:47,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 16:06:47,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 16:06:47,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 16:06:47,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 16:06:47,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 16:06:47,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 16:06:47,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 16:06:47,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 16:06:47,677 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 16:06:47,677 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 16:06:47,681 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 16:06:47,683 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 16:06:47,691 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 16:06:47,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 16:06:47,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 16:06:47,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 16:06:47,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 16:06:47,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 16:06:47,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 16:06:47,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 16:06:47,705 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 16:06:47,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 16:06:47,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 16:06:47,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 16:06:47,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 16:06:47,714 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-22 16:06:47,717 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 [2018-10-22 16:06:47,747 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 16:06:47,747 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 16:06:47,748 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 16:06:47,748 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 16:06:47,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 16:06:47,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 16:06:47,749 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 16:06:47,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 16:06:47,750 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 16:06:47,750 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 16:06:47,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 16:06:47,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 16:06:47,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 16:06:47,751 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 16:06:47,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 16:06:47,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 16:06:47,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 16:06:47,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 16:06:47,752 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 16:06:47,752 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:06:47,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 16:06:47,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 16:06:47,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 16:06:47,753 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 16:06:47,753 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 16:06:47,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 16:06:47,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 16:06:47,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 16:06:47,754 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 16:06:47,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 16:06:47,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 16:06:47,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 16:06:47,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 16:06:47,825 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 16:06:47,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-10-22 16:06:47,876 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fb9ec5ee/d9291dfe56164b8ebaf913905172d3b7/FLAG26a2aece8 [2018-10-22 16:06:48,302 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 16:06:48,303 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-10-22 16:06:48,312 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fb9ec5ee/d9291dfe56164b8ebaf913905172d3b7/FLAG26a2aece8 [2018-10-22 16:06:48,325 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fb9ec5ee/d9291dfe56164b8ebaf913905172d3b7 [2018-10-22 16:06:48,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 16:06:48,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 16:06:48,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 16:06:48,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 16:06:48,341 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 16:06:48,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51be25fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48, skipping insertion in model container [2018-10-22 16:06:48,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 16:06:48,374 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 16:06:48,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:06:48,589 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 16:06:48,611 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:06:48,626 INFO L193 MainTranslator]: Completed translation [2018-10-22 16:06:48,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48 WrapperNode [2018-10-22 16:06:48,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 16:06:48,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 16:06:48,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 16:06:48,628 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 16:06:48,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 16:06:48,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 16:06:48,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 16:06:48,646 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 16:06:48,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (1/1) ... [2018-10-22 16:06:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 16:06:48,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 16:06:48,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 16:06:48,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 16:06:48,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (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 [2018-10-22 16:06:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 16:06:48,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 16:06:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 16:06:48,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 16:06:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 16:06:48,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 16:06:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 16:06:48,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 16:06:49,198 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 16:06:49,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:06:49 BoogieIcfgContainer [2018-10-22 16:06:49,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 16:06:49,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 16:06:49,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 16:06:49,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 16:06:49,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 04:06:48" (1/3) ... [2018-10-22 16:06:49,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e613a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:06:49, skipping insertion in model container [2018-10-22 16:06:49,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:06:48" (2/3) ... [2018-10-22 16:06:49,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e613a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:06:49, skipping insertion in model container [2018-10-22 16:06:49,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:06:49" (3/3) ... [2018-10-22 16:06:49,207 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-10-22 16:06:49,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 16:06:49,224 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 16:06:49,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 16:06:49,271 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 16:06:49,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 16:06:49,272 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 16:06:49,272 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 16:06:49,272 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 16:06:49,272 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 16:06:49,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 16:06:49,273 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 16:06:49,273 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 16:06:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-22 16:06:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 16:06:49,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:49,298 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:49,300 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:49,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-10-22 16:06:49,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:49,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:49,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,360 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:49,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:06:49,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 16:06:49,428 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:49,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 16:06:49,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 16:06:49,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 16:06:49,447 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-10-22 16:06:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:49,470 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-10-22 16:06:49,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 16:06:49,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-22 16:06:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:49,482 INFO L225 Difference]: With dead ends: 43 [2018-10-22 16:06:49,483 INFO L226 Difference]: Without dead ends: 22 [2018-10-22 16:06:49,486 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 [2018-10-22 16:06:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-22 16:06:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-22 16:06:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-22 16:06:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-10-22 16:06:49,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-10-22 16:06:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:49,528 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-10-22 16:06:49,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 16:06:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-10-22 16:06:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 16:06:49,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:49,530 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:49,530 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:49,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:49,531 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-10-22 16:06:49,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:49,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:49,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,532 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:49,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:06:49,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 16:06:49,762 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:49,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 16:06:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 16:06:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:06:49,765 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-10-22 16:06:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:49,908 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-22 16:06:49,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 16:06:49,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-22 16:06:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:49,910 INFO L225 Difference]: With dead ends: 37 [2018-10-22 16:06:49,910 INFO L226 Difference]: Without dead ends: 24 [2018-10-22 16:06:49,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-22 16:06:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-22 16:06:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-22 16:06:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-22 16:06:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-10-22 16:06:49,918 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-10-22 16:06:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:49,919 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-10-22 16:06:49,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 16:06:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-10-22 16:06:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-22 16:06:49,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:49,920 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:49,920 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:49,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:49,921 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-10-22 16:06:49,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:49,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:49,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:49,923 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:50,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 16:06:50,165 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 16:06:50,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-22 16:06:50,170 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-10-22 16:06:50,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 16:06:50,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 16:06:50,515 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 16:06:50,517 INFO L272 AbstractInterpreter]: Visited 17 different actions 23 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-10-22 16:06:50,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:50,538 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 16:06:50,728 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 73.33% of their original sizes. [2018-10-22 16:06:50,728 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 16:06:51,784 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 16:06:51,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 16:06:51,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-10-22 16:06:51,786 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:51,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 16:06:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 16:06:51,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-10-22 16:06:51,787 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 12 states. [2018-10-22 16:06:53,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:53,563 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2018-10-22 16:06:53,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 16:06:53,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-10-22 16:06:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:53,566 INFO L225 Difference]: With dead ends: 54 [2018-10-22 16:06:53,566 INFO L226 Difference]: Without dead ends: 38 [2018-10-22 16:06:53,568 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-10-22 16:06:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-22 16:06:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-10-22 16:06:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-22 16:06:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-10-22 16:06:53,599 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-10-22 16:06:53,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:53,600 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-10-22 16:06:53,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 16:06:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-10-22 16:06:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-22 16:06:53,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:53,602 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:53,602 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:53,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:53,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1708424439, now seen corresponding path program 1 times [2018-10-22 16:06:53,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:53,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:53,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:53,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:53,605 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:53,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 16:06:53,900 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 16:06:53,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-22 16:06:53,901 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [32], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-10-22 16:06:53,903 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 16:06:53,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 16:06:53,943 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 16:06:53,944 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-10-22 16:06:53,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:53,954 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 16:06:54,039 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 72.43% of their original sizes. [2018-10-22 16:06:54,039 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 16:06:54,482 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 16:06:54,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 16:06:54,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-10-22 16:06:54,483 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:54,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 16:06:54,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 16:06:54,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-10-22 16:06:54,484 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2018-10-22 16:06:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:55,600 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-10-22 16:06:55,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 16:06:55,601 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-10-22 16:06:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:55,604 INFO L225 Difference]: With dead ends: 64 [2018-10-22 16:06:55,604 INFO L226 Difference]: Without dead ends: 48 [2018-10-22 16:06:55,605 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-22 16:06:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-22 16:06:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-10-22 16:06:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-22 16:06:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-10-22 16:06:55,621 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2018-10-22 16:06:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:55,622 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-10-22 16:06:55,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 16:06:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-10-22 16:06:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-22 16:06:55,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:55,624 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:55,624 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:55,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1315397429, now seen corresponding path program 1 times [2018-10-22 16:06:55,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:55,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:55,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:55,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:55,626 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:55,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 16:06:55,717 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 16:06:55,718 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-22 16:06:55,718 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [30], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-10-22 16:06:55,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 16:06:55,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 16:06:55,751 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 16:06:55,752 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-10-22 16:06:55,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:55,775 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 16:06:55,836 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 72.43% of their original sizes. [2018-10-22 16:06:55,837 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 16:06:56,446 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 16:06:56,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 16:06:56,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-10-22 16:06:56,447 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:56,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 16:06:56,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 16:06:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-10-22 16:06:56,449 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2018-10-22 16:06:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:57,635 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-10-22 16:06:57,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 16:06:57,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-10-22 16:06:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:57,636 INFO L225 Difference]: With dead ends: 58 [2018-10-22 16:06:57,637 INFO L226 Difference]: Without dead ends: 42 [2018-10-22 16:06:57,638 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-22 16:06:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-22 16:06:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2018-10-22 16:06:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-22 16:06:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-22 16:06:57,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-10-22 16:06:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:57,653 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-22 16:06:57,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 16:06:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-22 16:06:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 16:06:57,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:06:57,654 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:06:57,655 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:06:57,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:06:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1155724272, now seen corresponding path program 1 times [2018-10-22 16:06:57,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:06:57,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:57,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:06:57,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:06:57,657 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:06:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:06:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:06:57,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:06:57,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 16:06:57,742 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:06:57,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 16:06:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 16:06:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:06:57,743 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2018-10-22 16:06:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:06:57,846 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-10-22 16:06:57,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 16:06:57,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-10-22 16:06:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:06:57,848 INFO L225 Difference]: With dead ends: 34 [2018-10-22 16:06:57,848 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 16:06:57,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-22 16:06:57,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 16:06:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 16:06:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 16:06:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 16:06:57,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-10-22 16:06:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:06:57,850 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 16:06:57,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 16:06:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 16:06:57,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 16:06:57,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 16:06:58,101 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 310 [2018-10-22 16:06:58,273 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 315 [2018-10-22 16:06:58,378 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 278 [2018-10-22 16:07:00,479 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 310 DAG size of output: 55 [2018-10-22 16:07:01,221 WARN L179 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 63 [2018-10-22 16:07:02,285 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 278 DAG size of output: 61 [2018-10-22 16:07:02,317 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 16:07:02,317 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:07:02,317 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:07:02,317 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 16:07:02,318 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 16:07:02,318 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 16:07:02,318 INFO L421 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (let ((.cse1 (= main_~c1~0 4000)) (.cse0 (<= main_~n~0 main_~i~0)) (.cse2 (= main_~c3~0 10000))) (or (and (and (<= main_~c2~0 main_~k~0) (<= (+ main_~i~0 1999) main_~k~0) .cse0 (<= 4000 (* 2 main_~c2~0))) (and (<= main_~k~0 (+ main_~n~0 1999)) (= main_~j~0 0)) .cse1 .cse2) (and (let ((.cse3 (+ main_~j~0 main_~k~0))) (or (and (<= .cse3 10000) .cse1 (and (<= main_~i~0 main_~n~0) (<= main_~k~0 (+ main_~i~0 9999)) .cse2) (= main_~k~0 10000)) (and (<= .cse3 4000) (<= 8000 (* 2 main_~k~0)) (and (<= (+ main_~c1~0 main_~i~0) 4001) .cse1 (<= 4001 (+ main_~c1~0 main_~n~0)) .cse0) .cse2))) (= main_~c2~0 2000)))) (<= main_~n~0 (+ main_~j~0 1))) [2018-10-22 16:07:02,318 INFO L425 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L425 ceAbstractionStarter]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2018-10-22 16:07:02,319 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-10-22 16:07:02,319 INFO L421 ceAbstractionStarter]: At program point L32-3(lines 32 36) the Hoare annotation is: (let ((.cse8 (* 2 main_~c2~0))) (let ((.cse3 (= main_~c1~0 4000)) (.cse7 (<= main_~n~0 1)) (.cse4 (<= 0 (+ main_~c1~0 main_~n~0 2147479648))) (.cse2 (<= 4000 .cse8)) (.cse5 (= main_~c3~0 10000)) (.cse0 (<= main_~n~0 main_~j~0))) (or (and (<= main_~n~0 0) (<= main_~i~0 0) .cse0) (and (let ((.cse1 (<= main_~n~0 main_~i~0))) (or (and (and (<= main_~c2~0 main_~k~0) (<= (+ main_~i~0 1999) main_~k~0) .cse1 .cse2) (<= main_~k~0 (+ main_~j~0 2000)) .cse3 .cse4 (= main_~k~0 2000) .cse5) (and (or (and .cse3 (and (<= main_~i~0 main_~n~0) (<= main_~k~0 (+ main_~i~0 9999)) .cse5) (= main_~k~0 10000)) (let ((.cse6 (* 2 main_~k~0))) (and (<= 8000 .cse6) (and (<= (+ main_~c1~0 main_~i~0) 4001) .cse3 (<= 4001 (+ main_~c1~0 main_~n~0)) .cse1) (<= .cse6 8000) .cse5))) (= main_~c2~0 2000)))) .cse7 (<= main_~n~0 (+ main_~j~0 1))) (and (<= .cse8 4000) .cse3 .cse7 .cse4 .cse2 .cse5 .cse0)))) [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L32-4(lines 32 36) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L421 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse1 (<= main_~n~0 main_~i~0)) (.cse3 (= main_~c1~0 4000)) (.cse2 (= main_~c3~0 10000))) (or (and (or (and (let ((.cse0 (+ main_~i~0 9999))) (and (<= main_~i~0 main_~n~0) (<= main_~k~0 .cse0) (= main_~k~0 10000) .cse1 (<= .cse0 main_~c3~0) .cse2)) .cse3) (and (and (<= (+ main_~c1~0 main_~i~0) 4001) .cse3 (<= (+ main_~n~0 3999) main_~k~0) (<= 4001 (+ main_~c1~0 main_~n~0)) .cse1 (<= (* 2 main_~k~0) 8000)) .cse2)) (= main_~c2~0 2000)) (and (or (and (<= (* 2 main_~c2~0) 4000) (<= (+ main_~k~0 2000) main_~c2~0) (<= (+ main_~n~0 1991) main_~c2~0) (<= main_~i~0 main_~k~0) (<= main_~k~0 main_~n~0) (= main_~i~0 0)) (and (<= 2001 (+ main_~c2~0 main_~n~0)) (<= main_~c2~0 main_~k~0) (= main_~k~0 2000) (<= (+ main_~i~0 1999) main_~k~0) .cse1)) .cse3 .cse2))) [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 20 30) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:07:02,320 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 16:07:02,321 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 16:07:02,321 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:07:02,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 04:07:02 BoogieIcfgContainer [2018-10-22 16:07:02,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 16:07:02,344 INFO L168 Benchmark]: Toolchain (without parser) took 14008.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 866.6 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -429.8 MB). Peak memory consumption was 595.8 MB. Max. memory is 7.1 GB. [2018-10-22 16:07:02,350 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-22 16:07:02,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.07 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. [2018-10-22 16:07:02,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.25 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. [2018-10-22 16:07:02,355 INFO L168 Benchmark]: Boogie Preprocessor took 21.44 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. [2018-10-22 16:07:02,356 INFO L168 Benchmark]: RCFGBuilder took 531.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-22 16:07:02,357 INFO L168 Benchmark]: TraceAbstraction took 13143.96 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 140.5 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 343.3 MB). Peak memory consumption was 642.7 MB. Max. memory is 7.1 GB. [2018-10-22 16:07:02,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 289.07 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 18.25 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 21.44 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 531.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13143.96 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 140.5 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 343.3 MB). Peak memory consumption was 642.7 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: 32]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 0) && n <= j) || (((((((((((c2 <= k && i + 1999 <= k) && n <= i) && 4000 <= 2 * c2) && k <= j + 2000) && c1 == 4000) && 0 <= c1 + n + 2147479648) && k == 2000) && c3 == 10000) || ((((c1 == 4000 && (i <= n && k <= i + 9999) && c3 == 10000) && k == 10000) || (((8000 <= 2 * k && ((c1 + i <= 4001 && c1 == 4000) && 4001 <= c1 + n) && n <= i) && 2 * k <= 8000) && c3 == 10000)) && c2 == 2000)) && n <= 1) && n <= j + 1)) || ((((((2 * c2 <= 4000 && c1 == 4000) && n <= 1) && 0 <= c1 + n + 2147479648) && 4000 <= 2 * c2) && c3 == 10000) && n <= j) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((i <= n && k <= i + 9999) && k == 10000) && n <= i) && i + 9999 <= c3) && c3 == 10000) && c1 == 4000) || ((((((c1 + i <= 4001 && c1 == 4000) && n + 3999 <= k) && 4001 <= c1 + n) && n <= i) && 2 * k <= 8000) && c3 == 10000)) && c2 == 2000) || ((((((((2 * c2 <= 4000 && k + 2000 <= c2) && n + 1991 <= c2) && i <= k) && k <= n) && i == 0) || ((((2001 <= c2 + n && c2 <= k) && k == 2000) && i + 1999 <= k) && n <= i)) && c1 == 4000) && c3 == 10000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 13.0s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 4.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 133 SDtfs, 120 SDslu, 384 SDs, 0 SdLazy, 139 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.8660714285714285 AbsIntWeakeningRatio, 1.125 AbsIntAvgWeakeningVarsNumRemoved, 17.482142857142858 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 365 HoareAnnotationTreeSize, 14 FomulaSimplifications, 268 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5657 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 5011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 7/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...