/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:27:21,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:27:21,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:27:21,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:27:22,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:27:22,025 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:27:22,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:27:22,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:27:22,027 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:27:22,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:27:22,027 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:27:22,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:27:22,028 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:27:22,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:27:22,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:27:22,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:27:22,028 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:27:22,029 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:27:22,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:27:22,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:27:22,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:27:22,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:27:22,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:27:22,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:27:22,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:27:22,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:27:22,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:27:22,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:27:22,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:27:22,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:27:22,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:27:22,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:27:22,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:27:22,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:27:22,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:27:22,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:27:22,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:27:22,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:27:22,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:27:22,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:27:22,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:27:22,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:27:22,035 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:27:22,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:27:22,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:27:22,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:27:22,324 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:27:22,324 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:27:22,325 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2019-11-24 04:27:22,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebadb0e94/acb6ba848c9545f587ae557c03b4040c/FLAGb255e2004 [2019-11-24 04:27:22,786 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:27:22,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2019-11-24 04:27:22,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebadb0e94/acb6ba848c9545f587ae557c03b4040c/FLAGb255e2004 [2019-11-24 04:27:23,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebadb0e94/acb6ba848c9545f587ae557c03b4040c [2019-11-24 04:27:23,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:27:23,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:27:23,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:23,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:27:23,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:27:23,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2439b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23, skipping insertion in model container [2019-11-24 04:27:23,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:27:23,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:27:23,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:23,470 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:27:23,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:23,499 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:27:23,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23 WrapperNode [2019-11-24 04:27:23,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:23,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:23,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:27:23,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:27:23,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:23,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:27:23,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:27:23,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:27:23,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (1/1) ... [2019-11-24 04:27:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:27:23,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:27:23,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:27:23,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:27:23,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (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 [2019-11-24 04:27:23,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:27:23,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:27:23,919 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:27:23,920 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:27:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:23 BoogieIcfgContainer [2019-11-24 04:27:23,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:27:23,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:27:23,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:27:23,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:27:23,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:27:23" (1/3) ... [2019-11-24 04:27:23,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfd7b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:23, skipping insertion in model container [2019-11-24 04:27:23,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:23" (2/3) ... [2019-11-24 04:27:23,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfd7b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:23, skipping insertion in model container [2019-11-24 04:27:23,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:23" (3/3) ... [2019-11-24 04:27:23,930 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2019-11-24 04:27:23,941 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:27:23,948 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:27:23,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:27:23,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:27:23,990 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:27:23,990 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:27:23,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:27:23,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:27:23,991 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:27:23,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:27:23,991 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:27:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-24 04:27:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:27:24,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:24,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:27:24,036 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 988646, now seen corresponding path program 1 times [2019-11-24 04:27:24,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:24,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030740924] [2019-11-24 04:27:24,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:24,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030740924] [2019-11-24 04:27:24,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:27:24,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:27:24,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560660717] [2019-11-24 04:27:24,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:27:24,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:24,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:27:24,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:27:24,337 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-11-24 04:27:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:24,390 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-24 04:27:24,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:27:24,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-24 04:27:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:24,402 INFO L225 Difference]: With dead ends: 15 [2019-11-24 04:27:24,402 INFO L226 Difference]: Without dead ends: 6 [2019-11-24 04:27:24,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:27:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-24 04:27:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-24 04:27:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-24 04:27:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-24 04:27:24,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-24 04:27:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:24,441 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-24 04:27:24,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:27:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-24 04:27:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:27:24,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:24,443 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:27:24,443 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:24,444 INFO L82 PathProgramCache]: Analyzing trace with hash 30749855, now seen corresponding path program 1 times [2019-11-24 04:27:24,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:24,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130698987] [2019-11-24 04:27:24,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:24,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130698987] [2019-11-24 04:27:24,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968589515] [2019-11-24 04:27:24,582 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 [2019-11-24 04:27:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:24,615 WARN L253 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-24 04:27:24,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:24,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:24,728 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:24,910 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2019-11-24 04:27:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:24,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941890965] [2019-11-24 04:27:24,964 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-24 04:27:24,964 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:24,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:24,984 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:24,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:27:25,121 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:27:25,175 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:27:25,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:27:25,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2019-11-24 04:27:25,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125410407] [2019-11-24 04:27:25,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:27:25,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:25,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:27:25,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-24 04:27:25,180 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 10 states. [2019-11-24 04:27:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:25,552 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-24 04:27:25,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-24 04:27:25,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 5 [2019-11-24 04:27:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:25,553 INFO L225 Difference]: With dead ends: 14 [2019-11-24 04:27:25,553 INFO L226 Difference]: Without dead ends: 9 [2019-11-24 04:27:25,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2019-11-24 04:27:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-24 04:27:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-24 04:27:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-24 04:27:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-24 04:27:25,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-24 04:27:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:25,559 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-24 04:27:25,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 04:27:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-24 04:27:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:27:25,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:25,560 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2019-11-24 04:27:25,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:25,764 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:25,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1342012454, now seen corresponding path program 2 times [2019-11-24 04:27:25,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:25,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018474879] [2019-11-24 04:27:25,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:25,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018474879] [2019-11-24 04:27:25,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287434676] [2019-11-24 04:27:25,928 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-11-24 04:27:25,958 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-24 04:27:25,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 04:27:25,959 WARN L253 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 04:27:25,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:26,080 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:26,430 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-11-24 04:27:26,730 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2019-11-24 04:27:27,066 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2019-11-24 04:27:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:27,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238376155] [2019-11-24 04:27:27,074 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-24 04:27:27,075 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:27,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:27,075 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:27,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:27:27,123 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:27:27,179 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:27:27,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:27:27,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2019-11-24 04:27:27,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578066594] [2019-11-24 04:27:27,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-24 04:27:27,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-24 04:27:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2019-11-24 04:27:27,183 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 19 states. [2019-11-24 04:27:27,879 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 48 [2019-11-24 04:27:28,299 WARN L192 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 50 [2019-11-24 04:27:28,554 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 48 [2019-11-24 04:27:28,779 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2019-11-24 04:27:28,968 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2019-11-24 04:27:29,172 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-11-24 04:27:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:29,424 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-24 04:27:29,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-24 04:27:29,424 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 8 [2019-11-24 04:27:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:29,425 INFO L225 Difference]: With dead ends: 23 [2019-11-24 04:27:29,425 INFO L226 Difference]: Without dead ends: 15 [2019-11-24 04:27:29,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2019-11-24 04:27:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-24 04:27:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-24 04:27:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-24 04:27:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-24 04:27:29,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-24 04:27:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:29,433 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-24 04:27:29,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-24 04:27:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-24 04:27:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:27:29,433 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:29,434 INFO L410 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2019-11-24 04:27:29,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:27:29,635 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:29,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1633253766, now seen corresponding path program 3 times [2019-11-24 04:27:29,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:29,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850150841] [2019-11-24 04:27:29,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:27:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 04:27:29,723 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 04:27:29,724 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 04:27:29,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:27:29 BoogieIcfgContainer [2019-11-24 04:27:29,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:27:29,757 INFO L168 Benchmark]: Toolchain (without parser) took 6518.43 ms. Allocated memory was 138.4 MB in the beginning and 274.7 MB in the end (delta: 136.3 MB). Free memory was 103.1 MB in the beginning and 187.1 MB in the end (delta: -84.1 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,758 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.99 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.04 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 181.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,767 INFO L168 Benchmark]: Boogie Preprocessor took 20.05 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 179.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,768 INFO L168 Benchmark]: RCFGBuilder took 297.97 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 166.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,769 INFO L168 Benchmark]: TraceAbstraction took 5831.63 ms. Allocated memory was 201.9 MB in the beginning and 274.7 MB in the end (delta: 72.9 MB). Free memory was 166.0 MB in the beginning and 187.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:27:29,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.99 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 102.04 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 181.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.05 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 179.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 297.97 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 166.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5831.63 ms. Allocated memory was 201.9 MB in the beginning and 274.7 MB in the end (delta: 72.9 MB). Free memory was 166.0 MB in the beginning and 187.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND FALSE !(i<10) [L13] i++ [L13] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.7s, OverallIterations: 4, TraceHistogramMax: 10, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 33 SDslu, 32 SDs, 0 SdLazy, 83 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 5340 SizeOfPredicates, 12 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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 incorrect! Received shutdown request...