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/SpamAssassin-loop_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:46:35,642 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:46:35,644 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:46:35,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:46:35,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:46:35,658 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:46:35,659 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:46:35,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:46:35,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:46:35,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:46:35,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:46:35,665 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:46:35,666 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:46:35,667 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:46:35,668 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:46:35,669 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:46:35,670 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:46:35,672 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:46:35,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:46:35,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:46:35,677 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:46:35,679 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:46:35,681 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:46:35,692 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 [2018-10-22 15:46:35,707 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:46:35,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:46:35,708 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:46:35,708 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:46:35,709 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:46:35,709 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:46:35,709 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:46:35,710 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:46:35,710 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:46:35,710 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:46:35,710 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:46:35,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:46:35,711 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:46:35,711 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:46:35,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:46:35,711 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:46:35,711 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:46:35,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:46:35,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:46:35,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:46:35,712 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:46:35,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:46:35,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:46:35,713 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:46:35,713 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:46:35,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:46:35,713 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:46:35,714 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:46:35,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:46:35,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:46:35,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:46:35,777 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:46:35,778 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:46:35,779 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-10-22 15:46:35,837 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e586dca70/57b019254bf9477c8ae49c87487aa44c/FLAGccf09002c [2018-10-22 15:46:36,266 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:46:36,266 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-10-22 15:46:36,273 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e586dca70/57b019254bf9477c8ae49c87487aa44c/FLAGccf09002c [2018-10-22 15:46:36,291 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e586dca70/57b019254bf9477c8ae49c87487aa44c [2018-10-22 15:46:36,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:46:36,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:46:36,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:36,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:46:36,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:46:36,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b59c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36, skipping insertion in model container [2018-10-22 15:46:36,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:46:36,350 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:46:36,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:36,549 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:46:36,574 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:46:36,590 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:46:36,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36 WrapperNode [2018-10-22 15:46:36,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:46:36,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:36,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:46:36,592 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:46:36,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:46:36,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:46:36,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:46:36,635 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:46:36,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... [2018-10-22 15:46:36,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:46:36,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:46:36,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:46:36,661 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:46:36,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:46:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:46:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:46:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:46:36,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:46:37,242 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:46:37,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:37 BoogieIcfgContainer [2018-10-22 15:46:37,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:46:37,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:46:37,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:46:37,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:46:37,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:46:36" (1/3) ... [2018-10-22 15:46:37,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b4fcc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:37, skipping insertion in model container [2018-10-22 15:46:37,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:46:36" (2/3) ... [2018-10-22 15:46:37,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b4fcc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:46:37, skipping insertion in model container [2018-10-22 15:46:37,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:46:37" (3/3) ... [2018-10-22 15:46:37,252 INFO L112 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop_true-unreach-call_false-termination.i [2018-10-22 15:46:37,264 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:46:37,276 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:46:37,294 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:46:37,328 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:46:37,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:46:37,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:46:37,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:46:37,329 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:46:37,329 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:46:37,329 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:46:37,330 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:46:37,330 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:46:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-10-22 15:46:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:46:37,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:37,357 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:37,360 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:37,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:37,369 INFO L82 PathProgramCache]: Analyzing trace with hash -218701628, now seen corresponding path program 1 times [2018-10-22 15:46:37,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:37,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:37,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:37,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:37,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:37,610 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 15:46:37,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:37,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:46:37,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:46:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:46:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:46:37,633 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2018-10-22 15:46:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:38,090 INFO L93 Difference]: Finished difference Result 85 states and 148 transitions. [2018-10-22 15:46:38,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:46:38,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-22 15:46:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:38,102 INFO L225 Difference]: With dead ends: 85 [2018-10-22 15:46:38,102 INFO L226 Difference]: Without dead ends: 44 [2018-10-22 15:46:38,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:46:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-22 15:46:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-22 15:46:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-22 15:46:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2018-10-22 15:46:38,170 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 12 [2018-10-22 15:46:38,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:38,170 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2018-10-22 15:46:38,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:46:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2018-10-22 15:46:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:46:38,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:38,174 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:38,174 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:38,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash -240657595, now seen corresponding path program 1 times [2018-10-22 15:46:38,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:38,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:38,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:38,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:38,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:38,417 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 15:46:38,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:46:38,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:46:38,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:46:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:46:38,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:46:38,423 INFO L87 Difference]: Start difference. First operand 40 states and 57 transitions. Second operand 5 states. [2018-10-22 15:46:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:38,676 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2018-10-22 15:46:38,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:46:38,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-22 15:46:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:38,680 INFO L225 Difference]: With dead ends: 55 [2018-10-22 15:46:38,680 INFO L226 Difference]: Without dead ends: 53 [2018-10-22 15:46:38,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:46:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-22 15:46:38,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-22 15:46:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-22 15:46:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2018-10-22 15:46:38,697 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 12 [2018-10-22 15:46:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:38,697 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2018-10-22 15:46:38,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:46:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2018-10-22 15:46:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-22 15:46:38,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:38,698 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:38,699 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:38,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:38,699 INFO L82 PathProgramCache]: Analyzing trace with hash 432749666, now seen corresponding path program 1 times [2018-10-22 15:46:38,699 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:38,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:38,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:38,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:38,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:38,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:38,920 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:38,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:38,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:46:39,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:39,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-10-22 15:46:39,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:46:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:46:39,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:39,062 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 9 states. [2018-10-22 15:46:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:39,898 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2018-10-22 15:46:39,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:46:39,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-10-22 15:46:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:39,902 INFO L225 Difference]: With dead ends: 59 [2018-10-22 15:46:39,903 INFO L226 Difference]: Without dead ends: 57 [2018-10-22 15:46:39,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:46:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-22 15:46:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-10-22 15:46:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-22 15:46:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2018-10-22 15:46:39,918 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2018-10-22 15:46:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:39,918 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2018-10-22 15:46:39,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:46:39,919 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2018-10-22 15:46:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:46:39,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:39,920 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:39,921 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:39,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1848806212, now seen corresponding path program 1 times [2018-10-22 15:46:39,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:39,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:39,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:39,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:39,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-22 15:46:40,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:40,088 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:40,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:40,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:46:40,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:40,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2018-10-22 15:46:40,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:46:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:46:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:46:40,219 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 11 states. [2018-10-22 15:46:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:40,773 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2018-10-22 15:46:40,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 15:46:40,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-10-22 15:46:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:40,775 INFO L225 Difference]: With dead ends: 63 [2018-10-22 15:46:40,775 INFO L226 Difference]: Without dead ends: 61 [2018-10-22 15:46:40,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-10-22 15:46:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-22 15:46:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2018-10-22 15:46:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-22 15:46:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2018-10-22 15:46:40,789 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 22 [2018-10-22 15:46:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:40,789 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2018-10-22 15:46:40,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:46:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2018-10-22 15:46:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 15:46:40,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:40,791 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:40,791 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:40,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:40,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1576030562, now seen corresponding path program 1 times [2018-10-22 15:46:40,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:40,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:40,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:40,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:40,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-22 15:46:40,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:40,875 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:40,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:40,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 15:46:40,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:40,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-10-22 15:46:40,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:46:40,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:46:40,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:40,963 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 9 states. [2018-10-22 15:46:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:41,470 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2018-10-22 15:46:41,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:46:41,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-10-22 15:46:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:41,475 INFO L225 Difference]: With dead ends: 69 [2018-10-22 15:46:41,476 INFO L226 Difference]: Without dead ends: 67 [2018-10-22 15:46:41,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:46:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-22 15:46:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2018-10-22 15:46:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-22 15:46:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2018-10-22 15:46:41,488 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2018-10-22 15:46:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:41,489 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2018-10-22 15:46:41,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:46:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2018-10-22 15:46:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-22 15:46:41,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:41,491 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:41,491 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:41,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:41,492 INFO L82 PathProgramCache]: Analyzing trace with hash 800357493, now seen corresponding path program 1 times [2018-10-22 15:46:41,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:41,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:41,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:41,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:41,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-22 15:46:41,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:41,726 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:41,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:41,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-22 15:46:41,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:41,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-10-22 15:46:41,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:46:41,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:46:41,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:46:41,951 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 9 states. [2018-10-22 15:46:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:42,311 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2018-10-22 15:46:42,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:46:42,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2018-10-22 15:46:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:42,314 INFO L225 Difference]: With dead ends: 75 [2018-10-22 15:46:42,314 INFO L226 Difference]: Without dead ends: 73 [2018-10-22 15:46:42,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:46:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-22 15:46:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2018-10-22 15:46:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-22 15:46:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2018-10-22 15:46:42,327 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 45 [2018-10-22 15:46:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:42,328 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2018-10-22 15:46:42,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:46:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2018-10-22 15:46:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-22 15:46:42,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:42,331 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:42,331 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:42,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1514869323, now seen corresponding path program 1 times [2018-10-22 15:46:42,332 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:42,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:42,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:42,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:42,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-22 15:46:42,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:42,480 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:42,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:42,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-22 15:46:42,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:42,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2018-10-22 15:46:42,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:46:42,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:46:42,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:46:42,594 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 11 states. [2018-10-22 15:46:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:42,991 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2018-10-22 15:46:42,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 15:46:42,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2018-10-22 15:46:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:42,994 INFO L225 Difference]: With dead ends: 79 [2018-10-22 15:46:42,994 INFO L226 Difference]: Without dead ends: 77 [2018-10-22 15:46:42,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:46:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-22 15:46:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2018-10-22 15:46:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-22 15:46:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2018-10-22 15:46:43,008 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 55 [2018-10-22 15:46:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:43,008 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2018-10-22 15:46:43,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:46:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2018-10-22 15:46:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-22 15:46:43,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:46:43,010 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:46:43,011 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:46:43,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:46:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1512732351, now seen corresponding path program 1 times [2018-10-22 15:46:43,011 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:46:43,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:46:43,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:43,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:43,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:46:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-10-22 15:46:43,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:46:43,150 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:46:43,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:46:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:46:43,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:46:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-22 15:46:43,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:46:43,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2018-10-22 15:46:43,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 15:46:43,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 15:46:43,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:46:43,282 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 12 states. [2018-10-22 15:46:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:46:43,796 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2018-10-22 15:46:43,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:46:43,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-10-22 15:46:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:46:43,798 INFO L225 Difference]: With dead ends: 77 [2018-10-22 15:46:43,798 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:46:43,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-10-22 15:46:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:46:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:46:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:46:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:46:43,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2018-10-22 15:46:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:46:43,802 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:46:43,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 15:46:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:46:43,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:46:43,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:46:43,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 15:46:44,564 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-22 15:46:44,772 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,772 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,772 INFO L421 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,772 INFO L428 ceAbstractionStarter]: At program point L52(lines 10 53) the Hoare annotation is: true [2018-10-22 15:46:44,773 INFO L421 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0)) [2018-10-22 15:46:44,773 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,773 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:46:44,773 INFO L421 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,773 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:46:44,774 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:46:44,774 INFO L421 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,774 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-22 15:46:44,774 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 51) no Hoare annotation was computed. [2018-10-22 15:46:44,774 INFO L421 ceAbstractionStarter]: At program point L20-3(lines 20 51) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0)) [2018-10-22 15:46:44,774 INFO L425 ceAbstractionStarter]: For program point L20-4(lines 20 51) no Hoare annotation was computed. [2018-10-22 15:46:44,775 INFO L421 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0)) [2018-10-22 15:46:44,775 INFO L421 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,775 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:46:44,775 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-10-22 15:46:44,775 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-22 15:46:44,775 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 50) no Hoare annotation was computed. [2018-10-22 15:46:44,775 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 50) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0)) [2018-10-22 15:46:44,776 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 15:46:44,776 INFO L425 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-10-22 15:46:44,776 INFO L421 ceAbstractionStarter]: At program point L42(lines 22 49) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,776 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,776 INFO L421 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,776 INFO L421 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,777 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,777 INFO L421 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2018-10-22 15:46:44,777 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 49) no Hoare annotation was computed. [2018-10-22 15:46:44,777 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0)) [2018-10-22 15:46:44,777 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-10-22 15:46:44,777 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-10-22 15:46:44,778 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 15:46:44,778 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:46:44,778 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:46:44,778 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:46:44,778 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:46:44,778 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:46:44,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:46:44 BoogieIcfgContainer [2018-10-22 15:46:44,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:46:44,794 INFO L168 Benchmark]: Toolchain (without parser) took 8492.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -231.6 MB). Peak memory consumption was 502.4 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:44,795 INFO L168 Benchmark]: CDTParser took 0.27 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 15:46:44,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.98 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 15:46:44,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.24 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 15:46:44,797 INFO L168 Benchmark]: Boogie Preprocessor took 25.67 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 15:46:44,798 INFO L168 Benchmark]: RCFGBuilder took 582.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:44,799 INFO L168 Benchmark]: TraceAbstraction took 7548.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 540.6 MB). Peak memory consumption was 540.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:46:44,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 287.98 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 42.24 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 25.67 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 582.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7548.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 540.6 MB). Peak memory consumption was 540.6 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: 22]: Loop Invariant Derived loop invariant: (((j + 5 <= bufsize && 0 <= j) && i + 1 <= len) && limit + 4 <= bufsize) && 0 <= i - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. SAFE Result, 7.4s OverallTime, 8 OverallIterations, 11 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 303 SDtfs, 169 SDslu, 1064 SDs, 0 SdLazy, 1340 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 317 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=7, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 55 PreInvPairs, 80 NumberOfFragments, 369 HoareAnnotationTreeSize, 55 FomulaSimplifications, 2430 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 20 FomulaSimplificationsInter, 173 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 50936 SizeOfPredicates, 15 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 778/856 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...