/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:12,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:12,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:12,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:12,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:12,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:12,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:12,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:12,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:12,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:12,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:12,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 22:11:12,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:11:12,652 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:12,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:12,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:12,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:12,654 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:12,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:12,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:12,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:12,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:12,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:12,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:12,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:12,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:12,656 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:12,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:12,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:12,656 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:12,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:12,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:12,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:12,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:12,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:12,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:12,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:12,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:12,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:12,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:12,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:12,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:12,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:12,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:12,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:12,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:12,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:12,958 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:12,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2019-11-23 22:11:13,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e32c488/c8adbd3d9f6742e296c819fa61d751b7/FLAG8b0664915 [2019-11-23 22:11:13,474 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:13,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2019-11-23 22:11:13,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e32c488/c8adbd3d9f6742e296c819fa61d751b7/FLAG8b0664915 [2019-11-23 22:11:13,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e32c488/c8adbd3d9f6742e296c819fa61d751b7 [2019-11-23 22:11:13,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:13,847 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:13,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:13,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:13,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:13,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:13" (1/1) ... [2019-11-23 22:11:13,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214818cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:13, skipping insertion in model container [2019-11-23 22:11:13,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:13" (1/1) ... [2019-11-23 22:11:13,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:13,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:14,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:14,050 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:14,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:14,078 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:14,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14 WrapperNode [2019-11-23 22:11:14,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:14,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:14,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:14,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:14,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:14,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:14,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:14,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:14,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (1/1) ... [2019-11-23 22:11:14,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:14,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:14,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:14,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:14,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (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 [2019-11-23 22:11:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:14,430 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:14,430 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:11:14,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:14 BoogieIcfgContainer [2019-11-23 22:11:14,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:14,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:14,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:14,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:14,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:13" (1/3) ... [2019-11-23 22:11:14,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e64c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:14, skipping insertion in model container [2019-11-23 22:11:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:14" (2/3) ... [2019-11-23 22:11:14,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4e64c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:14, skipping insertion in model container [2019-11-23 22:11:14,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:14" (3/3) ... [2019-11-23 22:11:14,439 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2019-11-23 22:11:14,447 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:14,454 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:14,466 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:14,492 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:14,492 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:14,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:14,493 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:14,493 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:14,493 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:14,493 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:14,493 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-23 22:11:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:11:14,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:11:14,514 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-23 22:11:14,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107518975] [2019-11-23 22:11:14,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:14,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107518975] [2019-11-23 22:11:14,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:14,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:11:14,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699971065] [2019-11-23 22:11:14,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:11:14,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:11:14,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:11:14,650 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-23 22:11:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:14,667 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-23 22:11:14,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:11:14,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-23 22:11:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:14,675 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:11:14,676 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:11:14,679 INFO L630 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 [2019-11-23 22:11:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:11:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:11:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:11:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-23 22:11:14,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-23 22:11:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:14,715 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-23 22:11:14,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:11:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-23 22:11:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:11:14,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:14,716 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1484098869, now seen corresponding path program 1 times [2019-11-23 22:11:14,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651438560] [2019-11-23 22:11:14,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:14,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651438560] [2019-11-23 22:11:14,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:14,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:11:14,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563634077] [2019-11-23 22:11:14,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:11:14,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:14,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:11:14,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:11:14,871 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-23 22:11:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:14,982 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-23 22:11:14,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:11:14,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 22:11:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:14,984 INFO L225 Difference]: With dead ends: 15 [2019-11-23 22:11:14,984 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:11:14,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:11:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:11:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:11:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:11:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-23 22:11:14,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2019-11-23 22:11:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:14,990 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-23 22:11:14,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:11:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-23 22:11:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:14,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,991 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:14,992 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 935349177, now seen corresponding path program 1 times [2019-11-23 22:11:14,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332977632] [2019-11-23 22:11:14,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:15,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332977632] [2019-11-23 22:11:15,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848524017] [2019-11-23 22:11:15,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:15,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:15,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:15,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:15,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:15,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:11:15,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213943283] [2019-11-23 22:11:15,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:11:15,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:15,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:11:15,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:11:15,175 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 6 states. [2019-11-23 22:11:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:15,231 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-23 22:11:15,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:15,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-23 22:11:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:15,232 INFO L225 Difference]: With dead ends: 18 [2019-11-23 22:11:15,232 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 22:11:15,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 22:11:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 22:11:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:11:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-23 22:11:15,238 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2019-11-23 22:11:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:15,238 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-23 22:11:15,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:11:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-23 22:11:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:11:15,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:15,240 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2019-11-23 22:11:15,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,445 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 570926091, now seen corresponding path program 2 times [2019-11-23 22:11:15,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:15,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605480167] [2019-11-23 22:11:15,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:15,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605480167] [2019-11-23 22:11:15,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263898839] [2019-11-23 22:11:15,540 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,582 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:11:15,582 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:15,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:11:15,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:15,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:15,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:15,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 22:11:15,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466363787] [2019-11-23 22:11:15,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:15,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:15,639 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2019-11-23 22:11:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:15,680 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-23 22:11:15,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:11:15,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-23 22:11:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:15,681 INFO L225 Difference]: With dead ends: 14 [2019-11-23 22:11:15,681 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:15,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:15,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-23 22:11:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:15,684 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:15,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:15,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:15,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:15,921 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:15,922 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-23 22:11:15,922 INFO L444 ceAbstractionStarter]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2019-11-23 22:11:15,923 INFO L440 ceAbstractionStarter]: At program point L13-5(lines 13 16) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) [2019-11-23 22:11:15,924 INFO L444 ceAbstractionStarter]: For program point L13-6(lines 13 16) no Hoare annotation was computed. [2019-11-23 22:11:15,924 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:15,924 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:15,924 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:15,924 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:15,925 INFO L447 ceAbstractionStarter]: At program point L18(lines 10 19) the Hoare annotation is: true [2019-11-23 22:11:15,925 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:15,925 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-23 22:11:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:15 BoogieIcfgContainer [2019-11-23 22:11:15,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:15,946 INFO L168 Benchmark]: Toolchain (without parser) took 2094.94 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 104.0 MB in the beginning and 105.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,948 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.96 ms. Allocated memory is still 145.8 MB. Free memory was 103.6 MB in the beginning and 94.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 145.8 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,952 INFO L168 Benchmark]: Boogie Preprocessor took 99.48 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.9 MB in the beginning and 181.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,953 INFO L168 Benchmark]: RCFGBuilder took 225.24 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 171.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,953 INFO L168 Benchmark]: TraceAbstraction took 1507.91 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 105.9 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:15,959 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.96 ms. Allocated memory is still 145.8 MB. Free memory was 103.6 MB in the beginning and 94.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 145.8 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.48 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 92.9 MB in the beginning and 181.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 225.24 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 171.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1507.91 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 105.9 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (y <= x && 1 <= x) && 0 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 34 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 3 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1669 SizeOfPredicates, 8 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...