java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:39:21,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:39:21,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:39:21,329 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:39:21,329 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:39:21,330 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:39:21,331 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:39:21,339 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:39:21,341 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:39:21,342 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:39:21,343 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:39:21,343 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:39:21,344 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:39:21,345 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:39:21,346 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:39:21,347 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:39:21,348 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:39:21,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:39:21,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:39:21,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:39:21,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:39:21,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:39:21,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:39:21,366 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:39:21,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:39:21,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:39:21,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:39:21,392 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:39:21,395 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:39:21,395 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:39:21,395 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:39:21,396 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:39:21,397 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:39:21,397 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:39:21,397 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:39:21,397 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:39:21,398 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:39:21,398 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:39:21,398 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:39:21,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:39:21,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:39:21,400 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:39:21,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:39:21,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:39:21,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:39:21,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:39:21,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:39:21,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:39:21,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:39:21,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:39:21,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:39:21,401 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:39:21,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:39:21,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:39:21,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:39:21,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:39:21,489 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:39:21,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_true-unreach-call_true-termination.i [2018-11-06 22:39:21,553 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e277cd3fb/e7d53387b5cf4a3a88f4dad6dab9bd8e/FLAG8b4142ceb [2018-11-06 22:39:22,033 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:39:22,034 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_true-unreach-call_true-termination.i [2018-11-06 22:39:22,041 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e277cd3fb/e7d53387b5cf4a3a88f4dad6dab9bd8e/FLAG8b4142ceb [2018-11-06 22:39:22,056 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e277cd3fb/e7d53387b5cf4a3a88f4dad6dab9bd8e [2018-11-06 22:39:22,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:39:22,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:39:22,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:39:22,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:39:22,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:39:22,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a4c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22, skipping insertion in model container [2018-11-06 22:39:22,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:39:22,112 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:39:22,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:39:22,294 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:39:22,312 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:39:22,329 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:39:22,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22 WrapperNode [2018-11-06 22:39:22,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:39:22,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:39:22,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:39:22,331 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:39:22,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:39:22,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:39:22,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:39:22,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:39:22,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... [2018-11-06 22:39:22,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:39:22,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:39:22,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:39:22,390 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:39:22,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:39:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:39:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:39:22,711 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:39:22,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:22 BoogieIcfgContainer [2018-11-06 22:39:22,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:39:22,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:39:22,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:39:22,716 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:39:22,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:39:22" (1/3) ... [2018-11-06 22:39:22,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3414b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:22, skipping insertion in model container [2018-11-06 22:39:22,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:39:22" (2/3) ... [2018-11-06 22:39:22,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3414b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:39:22, skipping insertion in model container [2018-11-06 22:39:22,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:39:22" (3/3) ... [2018-11-06 22:39:22,719 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_true-unreach-call_true-termination.i [2018-11-06 22:39:22,729 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:39:22,739 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:39:22,754 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:39:22,786 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:39:22,787 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:39:22,787 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:39:22,788 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:39:22,788 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:39:22,788 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:39:22,788 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:39:22,788 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:39:22,788 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:39:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-06 22:39:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:39:22,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:39:22,809 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:39:22,812 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:39:22,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:39:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1807151048, now seen corresponding path program 1 times [2018-11-06 22:39:22,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:39:22,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:39:22,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:22,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:39:22,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:39:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:39:22,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:39:22,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:39:22,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:39:22,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:39:22,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:39:22,953 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-11-06 22:39:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:39:22,968 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-11-06 22:39:22,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:39:22,970 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-11-06 22:39:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:39:22,981 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:39:22,981 INFO L226 Difference]: Without dead ends: 10 [2018-11-06 22:39:22,985 INFO L604 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 [2018-11-06 22:39:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-11-06 22:39:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-06 22:39:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-06 22:39:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-11-06 22:39:23,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-11-06 22:39:23,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:39:23,026 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-11-06 22:39:23,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:39:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-11-06 22:39:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 22:39:23,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:39:23,027 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:39:23,027 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:39:23,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:39:23,028 INFO L82 PathProgramCache]: Analyzing trace with hash 178554705, now seen corresponding path program 1 times [2018-11-06 22:39:23,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:39:23,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:39:23,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:23,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:39:23,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:39:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:39:23,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:39:23,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:39:23,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:39:23,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:39:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:39:23,238 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2018-11-06 22:39:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:39:23,443 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-06 22:39:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:39:23,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-06 22:39:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:39:23,444 INFO L225 Difference]: With dead ends: 16 [2018-11-06 22:39:23,445 INFO L226 Difference]: Without dead ends: 12 [2018-11-06 22:39:23,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:39:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-06 22:39:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-06 22:39:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:39:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-06 22:39:23,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2018-11-06 22:39:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:39:23,450 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-06 22:39:23,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:39:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-06 22:39:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:39:23,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:39:23,451 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:39:23,452 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:39:23,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:39:23,453 INFO L82 PathProgramCache]: Analyzing trace with hash -494066964, now seen corresponding path program 1 times [2018-11-06 22:39:23,453 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:39:23,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:39:23,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:23,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:39:23,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:39:23,850 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-11-06 22:39:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:39:24,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:39:24,042 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:39:24,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:39:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:39:24,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:39:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:39:24,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:39:24,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-11-06 22:39:24,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 22:39:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 22:39:24,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-06 22:39:24,485 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-11-06 22:39:24,987 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-11-06 22:39:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:39:25,281 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-06 22:39:25,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 22:39:25,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-11-06 22:39:25,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:39:25,283 INFO L225 Difference]: With dead ends: 24 [2018-11-06 22:39:25,284 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:39:25,285 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:39:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:39:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:39:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:39:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-06 22:39:25,290 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2018-11-06 22:39:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:39:25,290 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-06 22:39:25,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 22:39:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-06 22:39:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:39:25,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:39:25,291 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:39:25,292 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:39:25,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:39:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 529488076, now seen corresponding path program 2 times [2018-11-06 22:39:25,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:39:25,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:39:25,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:25,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:39:25,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:39:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:39:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 22:39:25,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:39:25,564 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:39:25,575 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:39:25,588 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:39:25,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:39:25,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:39:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:39:25,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:39:25,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 17 [2018-11-06 22:39:25,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-06 22:39:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-06 22:39:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:39:25,925 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-11-06 22:39:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:39:26,452 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-06 22:39:26,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 22:39:26,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-11-06 22:39:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:39:26,453 INFO L225 Difference]: With dead ends: 23 [2018-11-06 22:39:26,453 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:39:26,454 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2018-11-06 22:39:26,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:39:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:39:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:39:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:39:26,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-06 22:39:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:39:26,455 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:39:26,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-06 22:39:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:39:26,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:39:26,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:39:26,553 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:39:26,553 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-06 22:39:26,554 INFO L428 ceAbstractionStarter]: At program point L11(lines 11 18) the Hoare annotation is: true [2018-11-06 22:39:26,554 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-06 22:39:26,554 INFO L428 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2018-11-06 22:39:26,554 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:39:26,554 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:39:26,554 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:39:26,555 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-06 22:39:26,555 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 16) no Hoare annotation was computed. [2018-11-06 22:39:26,555 INFO L425 ceAbstractionStarter]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2018-11-06 22:39:26,555 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1)))) (and (= ULTIMATE.start_main_~sn~0 0) (= ULTIMATE.start_main_~i~0 1))) [2018-11-06 22:39:26,555 INFO L425 ceAbstractionStarter]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2018-11-06 22:39:26,555 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-06 22:39:26,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:39:26 BoogieIcfgContainer [2018-11-06 22:39:26,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:39:26,570 INFO L168 Benchmark]: Toolchain (without parser) took 4501.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -565.8 MB). Peak memory consumption was 162.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:26,571 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-06 22:39:26,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.73 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. [2018-11-06 22:39:26,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 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. [2018-11-06 22:39:26,573 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 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. [2018-11-06 22:39:26,574 INFO L168 Benchmark]: RCFGBuilder took 322.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:26,575 INFO L168 Benchmark]: TraceAbstraction took 3856.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 210.2 MB). Peak memory consumption was 210.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:39:26,580 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 259.73 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 36.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.72 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 322.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3856.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 210.2 MB). Peak memory consumption was 210.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) || (sn == 0 && i == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 23 SDslu, 79 SDs, 0 SdLazy, 145 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 7627 SizeOfPredicates, 10 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 7/34 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...