java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 16:09:32,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 16:09:32,938 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 16:09:32,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 16:09:32,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 16:09:32,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 16:09:32,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 16:09:32,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 16:09:32,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 16:09:32,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 16:09:32,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 16:09:32,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 16:09:32,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 16:09:32,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 16:09:32,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 16:09:32,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 16:09:32,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 16:09:32,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 16:09:32,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 16:09:32,978 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 16:09:32,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 16:09:32,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 16:09:32,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 16:09:33,002 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-22 16:09:33,024 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 16:09:33,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 16:09:33,025 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 16:09:33,025 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 16:09:33,025 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 16:09:33,025 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 16:09:33,026 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 16:09:33,026 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 16:09:33,026 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 16:09:33,026 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 16:09:33,026 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 16:09:33,027 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 16:09:33,027 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 16:09:33,027 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 16:09:33,028 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 16:09:33,029 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 16:09:33,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 16:09:33,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 16:09:33,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 16:09:33,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:09:33,030 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 16:09:33,030 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 16:09:33,030 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 16:09:33,030 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 16:09:33,031 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 16:09:33,031 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 16:09:33,031 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 16:09:33,031 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 16:09:33,031 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 16:09:33,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 16:09:33,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 16:09:33,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 16:09:33,122 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 16:09:33,122 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 16:09:33,123 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 16:09:33,181 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22eccc88d/a1b963ac94a14f39b779e81462ef4cfc/FLAGad4b82ebc [2018-10-22 16:09:33,621 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 16:09:33,622 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 16:09:33,629 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22eccc88d/a1b963ac94a14f39b779e81462ef4cfc/FLAGad4b82ebc [2018-10-22 16:09:33,647 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22eccc88d/a1b963ac94a14f39b779e81462ef4cfc [2018-10-22 16:09:33,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 16:09:33,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 16:09:33,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 16:09:33,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 16:09:33,662 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 16:09:33,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7007d935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33, skipping insertion in model container [2018-10-22 16:09:33,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 16:09:33,691 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 16:09:33,842 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:09:33,846 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 16:09:33,861 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 16:09:33,876 INFO L193 MainTranslator]: Completed translation [2018-10-22 16:09:33,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33 WrapperNode [2018-10-22 16:09:33,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 16:09:33,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 16:09:33,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 16:09:33,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 16:09:33,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 16:09:33,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 16:09:33,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 16:09:33,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 16:09:33,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... [2018-10-22 16:09:33,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 16:09:33,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 16:09:33,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 16:09:33,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 16:09:33,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 16:09:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 16:09:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 16:09:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 16:09:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 16:09:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 16:09:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 16:09:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 16:09:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 16:09:34,237 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 16:09:34,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:09:34 BoogieIcfgContainer [2018-10-22 16:09:34,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 16:09:34,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 16:09:34,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 16:09:34,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 16:09:34,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 04:09:33" (1/3) ... [2018-10-22 16:09:34,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67804596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:09:34, skipping insertion in model container [2018-10-22 16:09:34,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 04:09:33" (2/3) ... [2018-10-22 16:09:34,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67804596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 04:09:34, skipping insertion in model container [2018-10-22 16:09:34,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 04:09:34" (3/3) ... [2018-10-22 16:09:34,254 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant_true-unreach-call_true-termination.i [2018-10-22 16:09:34,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 16:09:34,269 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 16:09:34,282 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 16:09:34,312 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 16:09:34,313 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 16:09:34,313 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 16:09:34,313 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 16:09:34,313 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 16:09:34,313 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 16:09:34,314 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 16:09:34,314 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 16:09:34,314 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 16:09:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-22 16:09:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 16:09:34,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:09:34,338 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:09:34,341 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:09:34,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:09:34,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1350619, now seen corresponding path program 1 times [2018-10-22 16:09:34,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:09:34,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:09:34,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:09:34,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:09:34,393 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:09:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:09:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:09:34,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 16:09:34,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 16:09:34,627 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:09:34,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 16:09:34,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 16:09:34,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 16:09:34,652 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-10-22 16:09:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:09:34,796 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2018-10-22 16:09:34,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 16:09:34,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-22 16:09:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:09:34,807 INFO L225 Difference]: With dead ends: 43 [2018-10-22 16:09:34,808 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 16:09:34,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 16:09:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 16:09:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-10-22 16:09:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-22 16:09:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-22 16:09:34,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2018-10-22 16:09:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:09:34,851 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-22 16:09:34,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 16:09:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-22 16:09:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-22 16:09:34,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 16:09:34,852 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 16:09:34,853 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 16:09:34,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:09:34,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1691970717, now seen corresponding path program 1 times [2018-10-22 16:09:34,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 16:09:34,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:09:34,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 16:09:34,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 16:09:34,855 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 16:09:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 16:09:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 16:09:34,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 16:09:34,989 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 16:09:34,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-22 16:09:34,992 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [13], [16], [22], [25], [27], [30], [32], [33], [34], [35], [37], [38] [2018-10-22 16:09:35,036 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 16:09:35,037 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 16:09:35,362 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 16:09:35,364 INFO L272 AbstractInterpreter]: Visited 14 different actions 68 times. Merged at 4 different actions 24 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-10-22 16:09:35,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 16:09:35,373 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 16:09:35,447 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 75% of their original sizes. [2018-10-22 16:09:35,447 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 16:09:35,556 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 16:09:35,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 16:09:35,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-22 16:09:35,557 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 16:09:35,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 16:09:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 16:09:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-22 16:09:35,560 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2018-10-22 16:09:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 16:09:35,764 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-22 16:09:35,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 16:09:35,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-10-22 16:09:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 16:09:35,768 INFO L225 Difference]: With dead ends: 22 [2018-10-22 16:09:35,769 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 16:09:35,770 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-22 16:09:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 16:09:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 16:09:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 16:09:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 16:09:35,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-22 16:09:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 16:09:35,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 16:09:35,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 16:09:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 16:09:35,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 16:09:35,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 16:09:36,028 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-22 16:09:36,031 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 16:09:36,031 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:09:36,031 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 16:09:36,031 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 16:09:36,032 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 16:09:36,032 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 16:09:36,032 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 16) the Hoare annotation is: true [2018-10-22 16:09:36,032 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 16) no Hoare annotation was computed. [2018-10-22 16:09:36,032 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 1999998) (<= 0 .cse0))) [2018-10-22 16:09:36,033 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 16) no Hoare annotation was computed. [2018-10-22 16:09:36,033 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2018-10-22 16:09:36,033 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2018-10-22 16:09:36,033 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 14) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= 0 .cse0) (<= .cse0 2000000))) [2018-10-22 16:09:36,033 INFO L425 ceAbstractionStarter]: For program point L12-4(lines 12 14) no Hoare annotation was computed. [2018-10-22 16:09:36,034 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 16:09:36,034 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:09:36,034 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 16:09:36,034 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 16:09:36,034 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 16:09:36,035 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 16:09:36,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 04:09:36 BoogieIcfgContainer [2018-10-22 16:09:36,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 16:09:36,045 INFO L168 Benchmark]: Toolchain (without parser) took 2387.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -712.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2018-10-22 16:09:36,046 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:09:36,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-22 16:09:36,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:09:36,049 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 16:09:36,050 INFO L168 Benchmark]: RCFGBuilder took 327.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-22 16:09:36,051 INFO L168 Benchmark]: TraceAbstraction took 1799.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2018-10-22 16:09:36,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 218.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 19.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 327.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1799.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 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: 12]: Loop Invariant Derived loop invariant: 0 <= 2 * i && 2 * i <= 2000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 13 SDslu, 65 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8611111111111112 AbsIntWeakeningRatio, 0.3333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 1.5555555555555556 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...