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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:39:58,625 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:39:58,627 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:39:58,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:39:58,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:39:58,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:39:58,648 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:39:58,651 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:39:58,654 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:39:58,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:39:58,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:39:58,657 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:39:58,658 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:39:58,660 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:39:58,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:39:58,669 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:39:58,670 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:39:58,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:39:58,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:39:58,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:39:58,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:39:58,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:39:58,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 09:39:58,685 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 09:39:58,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 09:39:58,686 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 09:39:58,687 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 09:39:58,688 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 09:39:58,689 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 09:39:58,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 09:39:58,690 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 09:39:58,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 09:39:58,693 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 09:39:58,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:39:58,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:39:58,717 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:39:58,718 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:39:58,721 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:39:58,722 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:39:58,722 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:39:58,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:39:58,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:39:58,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:39:58,723 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:39:58,724 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:39:58,724 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:39:58,724 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:39:58,724 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:39:58,725 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:39:58,725 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:39:58,725 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:39:58,725 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:39:58,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:39:58,726 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:39:58,727 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:39:58,727 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:39:58,727 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:39:58,728 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:39:58,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:39:58,728 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:39:58,728 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:39:58,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:39:58,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:39:58,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:39:58,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:39:58,819 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:39:58,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c [2018-10-23 09:39:58,891 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db7ddc6d6/ca32977e32a24f46a59df9cb2297e888/FLAGc1caebdb0 [2018-10-23 09:39:59,362 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:39:59,363 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call.i.v+lhb-reducer.c [2018-10-23 09:39:59,373 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db7ddc6d6/ca32977e32a24f46a59df9cb2297e888/FLAGc1caebdb0 [2018-10-23 09:39:59,392 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db7ddc6d6/ca32977e32a24f46a59df9cb2297e888 [2018-10-23 09:39:59,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:39:59,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:39:59,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:39:59,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:39:59,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:39:59,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3354c03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59, skipping insertion in model container [2018-10-23 09:39:59,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:39:59,461 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:39:59,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:39:59,633 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:39:59,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:39:59,670 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:39:59,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59 WrapperNode [2018-10-23 09:39:59,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:39:59,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:39:59,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:39:59,672 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:39:59,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:39:59,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:39:59,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:39:59,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:39:59,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (1/1) ... [2018-10-23 09:39:59,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:39:59,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:39:59,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:39:59,728 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:39:59,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (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 [2018-10-23 09:39:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:39:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:40:00,110 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:40:00,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:40:00 BoogieIcfgContainer [2018-10-23 09:40:00,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:40:00,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:40:00,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:40:00,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:40:00,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:39:59" (1/3) ... [2018-10-23 09:40:00,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6b89d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:40:00, skipping insertion in model container [2018-10-23 09:40:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:39:59" (2/3) ... [2018-10-23 09:40:00,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6b89d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:40:00, skipping insertion in model container [2018-10-23 09:40:00,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:40:00" (3/3) ... [2018-10-23 09:40:00,129 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build_true-unreach-call.i.v+lhb-reducer.c [2018-10-23 09:40:00,155 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:40:00,170 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-23 09:40:00,209 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-23 09:40:00,268 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:40:00,269 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:40:00,269 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:40:00,269 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:40:00,269 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:40:00,269 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:40:00,269 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:40:00,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:40:00,270 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:40:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-23 09:40:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-23 09:40:00,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:00,292 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-23 09:40:00,295 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:00,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2018-10-23 09:40:00,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:00,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:00,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:00,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:00,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:00,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:40:00,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 09:40:00,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 09:40:00,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 09:40:00,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 09:40:00,542 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-10-23 09:40:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:00,649 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-10-23 09:40:00,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 09:40:00,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-23 09:40:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:00,663 INFO L225 Difference]: With dead ends: 25 [2018-10-23 09:40:00,663 INFO L226 Difference]: Without dead ends: 14 [2018-10-23 09:40:00,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:40:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-23 09:40:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-23 09:40:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-23 09:40:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-23 09:40:00,706 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2018-10-23 09:40:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:00,707 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-23 09:40:00,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 09:40:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-23 09:40:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-23 09:40:00,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:00,708 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:00,708 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:00,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:00,709 INFO L82 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2018-10-23 09:40:00,709 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:00,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:00,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:00,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:00,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:01,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:40:01,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 09:40:01,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 09:40:01,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 09:40:01,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:40:01,110 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-10-23 09:40:01,425 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 09:40:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:01,566 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-10-23 09:40:01,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 09:40:01,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-23 09:40:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:01,568 INFO L225 Difference]: With dead ends: 15 [2018-10-23 09:40:01,568 INFO L226 Difference]: Without dead ends: 13 [2018-10-23 09:40:01,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-23 09:40:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-23 09:40:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-10-23 09:40:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-23 09:40:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-23 09:40:01,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2018-10-23 09:40:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:01,575 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-23 09:40:01,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 09:40:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-10-23 09:40:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 09:40:01,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:40:01,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:40:01,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:40:01,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:40:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2018-10-23 09:40:01,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:40:01,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:40:01,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:01,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:40:01,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:40:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:40:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:40:01,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:40:01,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 09:40:01,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 09:40:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 09:40:01,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:40:01,714 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-10-23 09:40:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:40:02,002 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-23 09:40:02,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 09:40:02,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-10-23 09:40:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:40:02,004 INFO L225 Difference]: With dead ends: 21 [2018-10-23 09:40:02,004 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 09:40:02,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 09:40:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 09:40:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 09:40:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 09:40:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 09:40:02,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-10-23 09:40:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:40:02,007 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 09:40:02,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 09:40:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 09:40:02,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 09:40:02,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 09:40:02,183 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 09:40:02,183 INFO L421 ceAbstractionStarter]: At program point L64(lines 34 84) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__i~0) (= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2018-10-23 09:40:02,184 INFO L428 ceAbstractionStarter]: At program point L95(lines 8 97) the Hoare annotation is: true [2018-10-23 09:40:02,184 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 91) no Hoare annotation was computed. [2018-10-23 09:40:02,184 INFO L425 ceAbstractionStarter]: For program point L71(lines 71 80) no Hoare annotation was computed. [2018-10-23 09:40:02,184 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2018-10-23 09:40:02,184 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2018-10-23 09:40:02,184 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 84) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L425 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2018-10-23 09:40:02,185 INFO L421 ceAbstractionStarter]: At program point L90(lines 9 97) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~main__i~0) [2018-10-23 09:40:02,186 INFO L425 ceAbstractionStarter]: For program point L57(lines 57 65) no Hoare annotation was computed. [2018-10-23 09:40:02,186 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-10-23 09:40:02,186 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-10-23 09:40:02,186 INFO L421 ceAbstractionStarter]: At program point L74(lines 47 82) the Hoare annotation is: (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 1) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2018-10-23 09:40:02,186 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 82) no Hoare annotation was computed. [2018-10-23 09:40:02,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:40:02 BoogieIcfgContainer [2018-10-23 09:40:02,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:40:02,202 INFO L168 Benchmark]: Toolchain (without parser) took 2794.51 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -728.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:02,203 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 09:40:02,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.76 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. [2018-10-23 09:40:02,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.91 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. [2018-10-23 09:40:02,205 INFO L168 Benchmark]: Boogie Preprocessor took 19.45 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. [2018-10-23 09:40:02,206 INFO L168 Benchmark]: RCFGBuilder took 384.16 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:02,207 INFO L168 Benchmark]: TraceAbstraction took 2088.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:02,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 261.76 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 35.91 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 19.45 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 384.16 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2088.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((__VERIFIER_assert__cond == 1 && !(__VERIFIER_assert__cond == 0)) && 0 <= main__i) && main__i < main__nlen - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (0 <= main__i && 1 == __VERIFIER_assert__cond) && main__i < main__nlen - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. SAFE Result, 1.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 64 SDslu, 20 SDs, 0 SdLazy, 65 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 28 HoareAnnotationTreeSize, 4 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...