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-new/half_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:50:52,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:50:52,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:50:52,451 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:50:52,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:50:52,453 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:50:52,454 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:50:52,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:50:52,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:50:52,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:50:52,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:50:52,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:50:52,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:50:52,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:50:52,466 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:50:52,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:50:52,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:50:52,477 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:50:52,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:50:52,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:50:52,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:50:52,485 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:50:52,488 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:50:52,502 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 15:50:52,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:50:52,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:50:52,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:50:52,535 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:50:52,536 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:50:52,536 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:50:52,536 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:50:52,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:50:52,537 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:50:52,537 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:50:52,537 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:50:52,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:50:52,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:50:52,538 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:50:52,538 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:50:52,538 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:50:52,538 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:50:52,538 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:50:52,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:50:52,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:50:52,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:50:52,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:50:52,539 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:50:52,540 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:50:52,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:50:52,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:50:52,540 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:50:52,540 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:50:52,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:50:52,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:50:52,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:50:52,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:50:52,605 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:50:52,605 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-10-22 15:50:52,671 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a825e160/fa8a79ec359946f0874f6a499ac0474d/FLAG126082f83 [2018-10-22 15:50:53,057 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:50:53,057 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-10-22 15:50:53,064 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a825e160/fa8a79ec359946f0874f6a499ac0474d/FLAG126082f83 [2018-10-22 15:50:53,078 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7a825e160/fa8a79ec359946f0874f6a499ac0474d [2018-10-22 15:50:53,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:50:53,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:50:53,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:50:53,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:50:53,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:50:53,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9330e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53, skipping insertion in model container [2018-10-22 15:50:53,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:50:53,130 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:50:53,337 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:50:53,341 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:50:53,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:50:53,380 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:50:53,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53 WrapperNode [2018-10-22 15:50:53,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:50:53,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:50:53,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:50:53,381 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:50:53,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:50:53,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:50:53,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:50:53,420 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:50:53,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (1/1) ... [2018-10-22 15:50:53,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:50:53,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:50:53,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:50:53,450 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:50:53,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (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 15:50:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:50:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:50:53,784 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:50:53,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:50:53 BoogieIcfgContainer [2018-10-22 15:50:53,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:50:53,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:50:53,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:50:53,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:50:53,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:50:53" (1/3) ... [2018-10-22 15:50:53,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f883bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:50:53, skipping insertion in model container [2018-10-22 15:50:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:50:53" (2/3) ... [2018-10-22 15:50:53,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f883bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:50:53, skipping insertion in model container [2018-10-22 15:50:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:50:53" (3/3) ... [2018-10-22 15:50:53,793 INFO L112 eAbstractionObserver]: Analyzing ICFG half_true-unreach-call_true-termination.i [2018-10-22 15:50:53,804 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:50:53,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:50:53,833 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:50:53,873 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:50:53,874 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:50:53,874 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:50:53,874 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:50:53,874 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:50:53,875 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:50:53,875 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:50:53,875 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:50:53,876 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:50:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-22 15:50:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-22 15:50:53,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:53,904 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:53,906 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:53,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2018-10-22 15:50:53,916 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:53,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:53,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:53,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:53,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:54,056 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 15:50:54,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:50:54,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:50:54,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:50:54,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:50:54,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:50:54,076 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-22 15:50:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:54,092 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2018-10-22 15:50:54,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:50:54,093 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-10-22 15:50:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:54,102 INFO L225 Difference]: With dead ends: 23 [2018-10-22 15:50:54,103 INFO L226 Difference]: Without dead ends: 11 [2018-10-22 15:50:54,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:50:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-22 15:50:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-22 15:50:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-22 15:50:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-22 15:50:54,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2018-10-22 15:50:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:54,140 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-22 15:50:54,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:50:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-22 15:50:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-22 15:50:54,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:54,141 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:54,142 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:54,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash 178559670, now seen corresponding path program 1 times [2018-10-22 15:50:54,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:54,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:54,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:54,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:54,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:54,543 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 15:50:54,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:50:54,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 15:50:54,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:50:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:50:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:50:54,547 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-10-22 15:50:54,781 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-22 15:50:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:54,954 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-22 15:50:54,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:50:54,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-22 15:50:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:54,957 INFO L225 Difference]: With dead ends: 27 [2018-10-22 15:50:54,958 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 15:50:54,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:50:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 15:50:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2018-10-22 15:50:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 15:50:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-22 15:50:54,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2018-10-22 15:50:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:54,965 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-22 15:50:54,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:50:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-22 15:50:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:50:54,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:54,966 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:54,966 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:54,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1203127347, now seen corresponding path program 1 times [2018-10-22 15:50:54,967 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:54,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:54,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:54,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:54,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:55,362 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-10-22 15:50:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:55,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:55,368 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 15:50:55,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:55,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:55,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:55,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-10-22 15:50:55,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:50:55,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:50:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:50:55,872 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2018-10-22 15:50:56,281 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-22 15:50:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:56,375 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-10-22 15:50:56,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:50:56,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-10-22 15:50:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:56,378 INFO L225 Difference]: With dead ends: 28 [2018-10-22 15:50:56,378 INFO L226 Difference]: Without dead ends: 20 [2018-10-22 15:50:56,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-10-22 15:50:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-22 15:50:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-10-22 15:50:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 15:50:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-22 15:50:56,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-10-22 15:50:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:56,384 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-22 15:50:56,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:50:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-22 15:50:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:50:56,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:56,385 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:56,386 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:56,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:56,386 INFO L82 PathProgramCache]: Analyzing trace with hash -574981788, now seen corresponding path program 2 times [2018-10-22 15:50:56,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:56,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:56,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:56,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:56,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:56,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:56,471 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 15:50:56,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:50:56,512 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:50:56,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:56,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:56,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:56,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-22 15:50:56,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:50:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:50:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:50:56,603 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-10-22 15:50:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:56,675 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-22 15:50:56,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:50:56,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-22 15:50:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:56,677 INFO L225 Difference]: With dead ends: 27 [2018-10-22 15:50:56,677 INFO L226 Difference]: Without dead ends: 19 [2018-10-22 15:50:56,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:50:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-22 15:50:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-10-22 15:50:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-22 15:50:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-22 15:50:56,681 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-10-22 15:50:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:56,682 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-22 15:50:56,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:50:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-22 15:50:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:50:56,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:56,683 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:56,683 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:56,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1200025574, now seen corresponding path program 1 times [2018-10-22 15:50:56,684 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:56,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:56,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:56,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:50:56,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:56,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:56,987 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 15:50:57,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:57,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:57,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:57,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-10-22 15:50:57,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-22 15:50:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-22 15:50:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:50:57,518 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 16 states. [2018-10-22 15:50:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:58,065 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-10-22 15:50:58,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-22 15:50:58,066 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-22 15:50:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:58,067 INFO L225 Difference]: With dead ends: 42 [2018-10-22 15:50:58,068 INFO L226 Difference]: Without dead ends: 30 [2018-10-22 15:50:58,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-10-22 15:50:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-22 15:50:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-10-22 15:50:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-22 15:50:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-22 15:50:58,075 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-10-22 15:50:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:58,075 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-22 15:50:58,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-22 15:50:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-22 15:50:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-22 15:50:58,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:58,077 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:58,077 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:58,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1639145836, now seen corresponding path program 2 times [2018-10-22 15:50:58,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:58,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:58,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:58,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:50:58,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:58,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:58,226 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 15:50:58,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:50:58,245 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:50:58,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:58,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:50:58,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:50:58,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-22 15:50:58,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:50:58,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:50:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:50:58,288 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2018-10-22 15:50:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:58,449 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-22 15:50:58,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:50:58,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-10-22 15:50:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:58,457 INFO L225 Difference]: With dead ends: 39 [2018-10-22 15:50:58,458 INFO L226 Difference]: Without dead ends: 31 [2018-10-22 15:50:58,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:50:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-22 15:50:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-10-22 15:50:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-22 15:50:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-22 15:50:58,463 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2018-10-22 15:50:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:58,464 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-22 15:50:58,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:50:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-22 15:50:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-22 15:50:58,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:58,465 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:58,466 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:58,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1741027795, now seen corresponding path program 3 times [2018-10-22 15:50:58,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:58,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:58,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:58,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:50:58,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 15:50:58,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:58,725 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 15:50:58,733 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:50:58,742 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-22 15:50:58,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:58,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:50:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-22 15:50:58,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:50:58,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-22 15:50:58,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:50:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:50:58,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:50:58,997 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2018-10-22 15:50:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:50:59,375 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-10-22 15:50:59,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:50:59,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-10-22 15:50:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:50:59,377 INFO L225 Difference]: With dead ends: 46 [2018-10-22 15:50:59,377 INFO L226 Difference]: Without dead ends: 34 [2018-10-22 15:50:59,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:50:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-22 15:50:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-10-22 15:50:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-22 15:50:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-22 15:50:59,385 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 28 [2018-10-22 15:50:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:50:59,385 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-22 15:50:59,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:50:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-22 15:50:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-22 15:50:59,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:50:59,387 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:50:59,387 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:50:59,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:50:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash -947189178, now seen corresponding path program 4 times [2018-10-22 15:50:59,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:50:59,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:50:59,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:59,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:50:59,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:50:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:50:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 15:50:59,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:50:59,691 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 15:50:59,700 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:50:59,718 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:50:59,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:50:59,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:51:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:51:00,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:51:00,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2018-10-22 15:51:00,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-22 15:51:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-22 15:51:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-10-22 15:51:00,206 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 24 states. [2018-10-22 15:51:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:51:01,847 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-10-22 15:51:01,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-22 15:51:01,847 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-10-22 15:51:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:51:01,848 INFO L225 Difference]: With dead ends: 44 [2018-10-22 15:51:01,848 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:51:01,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2018-10-22 15:51:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:51:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:51:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:51:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:51:01,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-10-22 15:51:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:51:01,851 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:51:01,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-22 15:51:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:51:01,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:51:01,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:51:01,965 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:51:01,965 INFO L428 ceAbstractionStarter]: At program point L21(lines 10 22) the Hoare annotation is: true [2018-10-22 15:51:01,965 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:51:01,965 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 19) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= .cse0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 .cse0) .cse1) (let ((.cse2 (+ ULTIMATE.start_main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)) (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~i~0 0)))) [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:51:01,966 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-10-22 15:51:01,967 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 15:51:01,967 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:51:01,967 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-22 15:51:01,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:51:01 BoogieIcfgContainer [2018-10-22 15:51:01,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:51:01,980 INFO L168 Benchmark]: Toolchain (without parser) took 8891.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -240.8 MB). Peak memory consumption was 501.1 MB. Max. memory is 7.1 GB. [2018-10-22 15:51:01,981 INFO L168 Benchmark]: CDTParser took 0.22 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 15:51:01,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.02 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 15:51:01,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.95 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 15:51:01,983 INFO L168 Benchmark]: Boogie Preprocessor took 30.24 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 15:51:01,984 INFO L168 Benchmark]: RCFGBuilder took 335.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:51:01,985 INFO L168 Benchmark]: TraceAbstraction took 8193.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 540.2 MB). Peak memory consumption was 540.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:51:01,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 291.02 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 37.95 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 30.24 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. * RCFGBuilder took 335.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8193.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 540.2 MB). Peak memory consumption was 540.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((2 * n <= i && i <= 2 * n) && n <= k) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k)) || ((n <= 0 && 0 <= n) && i == 0) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 3.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 90 SDslu, 314 SDs, 0 SdLazy, 775 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 14 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 248 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 271 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 43887 SizeOfPredicates, 15 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 106/344 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...