java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:43:36,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:43:36,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:43:36,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:43:36,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:43:36,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:43:36,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:43:36,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:43:36,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:43:36,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:43:36,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:43:36,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:43:36,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:43:36,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:43:36,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:43:36,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:43:36,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:43:36,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:43:36,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:43:36,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:43:36,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:43:36,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:43:36,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:43:36,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:43:36,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:43:36,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:43:36,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:43:36,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:43:36,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:43:36,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:43:36,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:43:36,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:43:36,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:43:36,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:43:36,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:43:36,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:43:36,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:43:36,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:43:36,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:43:36,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:43:36,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:43:36,483 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 [2019-10-07 13:43:36,510 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:43:36,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:43:36,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:43:36,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:43:36,512 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:43:36,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:43:36,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:43:36,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:43:36,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:43:36,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:43:36,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:43:36,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:43:36,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:43:36,514 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:43:36,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:43:36,514 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:43:36,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:43:36,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:43:36,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:43:36,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:43:36,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:43:36,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:43:36,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:43:36,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:43:36,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:43:36,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:43:36,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:43:36,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:43:36,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:43:36,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:43:36,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:43:36,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:43:36,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:43:36,799 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:43:36,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2019-10-07 13:43:36,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488c3fe6d/03c0e1415c614d66a0263c0f805e5a84/FLAG504828034 [2019-10-07 13:43:37,254 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:43:37,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2019-10-07 13:43:37,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488c3fe6d/03c0e1415c614d66a0263c0f805e5a84/FLAG504828034 [2019-10-07 13:43:37,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488c3fe6d/03c0e1415c614d66a0263c0f805e5a84 [2019-10-07 13:43:37,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:43:37,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:43:37,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:43:37,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:43:37,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:43:37,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:37,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431745ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37, skipping insertion in model container [2019-10-07 13:43:37,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:37,706 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:43:37,723 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:43:37,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:43:37,921 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:43:37,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:43:37,959 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:43:37,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37 WrapperNode [2019-10-07 13:43:37,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:43:37,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:43:37,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:43:37,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:43:38,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (1/1) ... [2019-10-07 13:43:38,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:43:38,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:43:38,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:43:38,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:43:38,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (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 [2019-10-07 13:43:38,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:43:38,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:43:38,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:43:38,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:43:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:43:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:43:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:43:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:43:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:43:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:43:38,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:43:38,405 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:43:38,405 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:43:38,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:43:38 BoogieIcfgContainer [2019-10-07 13:43:38,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:43:38,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:43:38,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:43:38,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:43:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:43:37" (1/3) ... [2019-10-07 13:43:38,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d028291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:43:38, skipping insertion in model container [2019-10-07 13:43:38,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:43:37" (2/3) ... [2019-10-07 13:43:38,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d028291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:43:38, skipping insertion in model container [2019-10-07 13:43:38,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:43:38" (3/3) ... [2019-10-07 13:43:38,426 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2019-10-07 13:43:38,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:43:38,454 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:43:38,468 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:43:38,492 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:43:38,492 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:43:38,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:43:38,493 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:43:38,493 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:43:38,493 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:43:38,493 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:43:38,493 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:43:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-07 13:43:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:43:38,516 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:43:38,517 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:43:38,519 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:43:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:43:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1974865403, now seen corresponding path program 1 times [2019-10-07 13:43:38,531 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:43:38,531 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:38,532 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:38,532 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:43:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:38,860 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:38,861 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:43:38,861 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 13:43:38,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:43:38,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:43:38,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:43:38,878 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 7 states. [2019-10-07 13:43:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:43:39,040 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-07 13:43:39,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:43:39,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-07 13:43:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:43:39,052 INFO L225 Difference]: With dead ends: 39 [2019-10-07 13:43:39,052 INFO L226 Difference]: Without dead ends: 13 [2019-10-07 13:43:39,055 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:43:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-07 13:43:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-07 13:43:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-07 13:43:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-07 13:43:39,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-07 13:43:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:43:39,101 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-07 13:43:39,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:43:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-07 13:43:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 13:43:39,103 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:43:39,104 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:43:39,104 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:43:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:43:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1003106899, now seen corresponding path program 1 times [2019-10-07 13:43:39,106 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:43:39,106 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:39,107 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:39,107 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:43:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:43:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:39,201 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:43:39,201 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:43:39,202 INFO L95 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 [2019-10-07 13:43:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:43:39,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-07 13:43:39,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:43:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:39,306 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:43:39,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:43:39,557 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2019-10-07 13:43:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:43:39,588 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:43:39,614 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-07 13:43:39,615 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:43:39,625 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:43:39,637 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:43:39,637 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:43:39,699 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:43:39,934 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-07 13:43:39,960 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:43:39,963 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:43:39,963 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:43:39,963 INFO L193 IcfgInterpreter]: Reachable states at location L15-4 satisfy 94#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (not (< main_~i~0 (* 2 main_~k~0))) (<= main_~k~0 1000000)) [2019-10-07 13:43:39,963 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:43:39,964 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:43:39,964 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 123#true [2019-10-07 13:43:39,964 INFO L193 IcfgInterpreter]: Reachable states at location L15-3 satisfy 89#(and (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~n~0) (<= 0 main_~i~0) (<= main_~k~0 1000000)) [2019-10-07 13:43:39,965 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:43:39,965 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 118#true [2019-10-07 13:43:39,965 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 114#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:43:39,965 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 109#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:43:39,966 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 99#(and (or (and (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0))) (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| 1))) [2019-10-07 13:43:39,966 INFO L193 IcfgInterpreter]: Reachable states at location L14 satisfy 38#(and (= main_~n~0 0) (<= main_~k~0 2147483647) (<= 0 main_~n~0) (<= main_~n~0 0) (<= 0 (+ main_~k~0 2147483648)) (<= 0 main_~i~0) (<= main_~i~0 0) (= main_~i~0 0)) [2019-10-07 13:43:39,966 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 104#(and (or (and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1))) (or (and (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)))) [2019-10-07 13:43:40,143 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:43:40,144 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 7] total 17 [2019-10-07 13:43:40,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-07 13:43:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-07 13:43:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:43:40,150 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 17 states. [2019-10-07 13:43:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:43:40,379 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-07 13:43:40,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:43:40,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 12 [2019-10-07 13:43:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:43:40,380 INFO L225 Difference]: With dead ends: 19 [2019-10-07 13:43:40,381 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:43:40,384 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2019-10-07 13:43:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:43:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:43:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:43:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:43:40,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-07 13:43:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:43:40,386 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:43:40,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-07 13:43:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:43:40,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:43:40,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:43:40,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:43:40,662 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-07 13:43:40,662 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:43:40,662 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:43:40,663 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 13:43:40,663 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:43:40,663 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:43:40,663 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 22) the Hoare annotation is: true [2019-10-07 13:43:40,663 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-10-07 13:43:40,663 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-07 13:43:40,663 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-07 13:43:40,663 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-10-07 13:43:40,664 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (and (<= 0 main_~n~0) (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~i~0) (<= main_~k~0 1000000)) [2019-10-07 13:43:40,664 INFO L439 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (or (and (or (<= main_~n~0 0) (< main_~n~0 (+ main_~k~0 1))) (<= main_~k~0 main_~n~0)) (and (<= 0 main_~n~0) (<= 0 (+ main_~k~0 1000000)) (<= 0 main_~i~0) (<= main_~k~0 1000000) (<= (* 2 main_~k~0) main_~i~0))) [2019-10-07 13:43:40,664 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-07 13:43:40,664 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:43:40,664 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-07 13:43:40,665 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-07 13:43:40,665 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-07 13:43:40,665 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:43:40,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:43:40 BoogieIcfgContainer [2019-10-07 13:43:40,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:43:40,682 INFO L168 Benchmark]: Toolchain (without parser) took 2993.37 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 102.1 MB in the beginning and 113.1 MB in the end (delta: -11.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,683 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.16 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,685 INFO L168 Benchmark]: Boogie Preprocessor took 123.94 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,686 INFO L168 Benchmark]: RCFGBuilder took 323.78 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,687 INFO L168 Benchmark]: TraceAbstraction took 2270.78 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 166.1 MB in the beginning and 113.1 MB in the end (delta: 53.0 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:43:40,691 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.16 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.94 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.78 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2270.78 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 166.1 MB in the beginning and 113.1 MB in the end (delta: 53.0 MB). Peak memory consumption was 83.4 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: 15]: Loop Invariant Derived loop invariant: ((0 <= n && 0 <= k + 1000000) && 0 <= i) && k <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 19 SDslu, 105 SDs, 0 SdLazy, 77 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 54 HoareAnnotationTreeSize, 10 FomulaSimplifications, 54 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 2204 SizeOfPredicates, 3 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 352, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 22, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME[ms]: 17, TOOLS_POST_CALL_APPLICATIONS: 5, TOOLS_POST_CALL_TIME[ms]: 5, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME[ms]: 18, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 19, DOMAIN_JOIN_TIME[ms]: 196, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 40, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 16, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME[ms]: 2, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 176, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 175, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 5, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 5, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 9, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 62, DAG_COMPRESSION_RETAINED_NODES: 43, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...