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-d380424 [2018-10-24 12:18:05,011 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:18:05,013 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:18:05,024 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:18:05,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:18:05,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:18:05,027 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:18:05,028 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:18:05,030 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:18:05,031 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:18:05,032 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:18:05,032 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:18:05,033 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:18:05,034 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:18:05,035 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:18:05,036 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:18:05,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:18:05,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:18:05,040 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:18:05,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:18:05,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:18:05,044 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:18:05,046 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:18:05,055 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 [2018-10-24 12:18:05,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:18:05,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:18:05,080 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:18:05,080 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:18:05,080 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:18:05,080 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:18:05,081 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:18:05,081 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:18:05,081 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:18:05,081 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:18:05,081 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:18:05,082 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:18:05,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:18:05,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:18:05,083 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:18:05,084 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:18:05,084 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:18:05,084 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:18:05,084 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:18:05,084 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:18:05,085 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:18:05,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:18:05,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:18:05,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:18:05,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:18:05,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:18:05,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:18:05,087 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:18:05,087 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:18:05,088 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:18:05,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:18:05,088 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:18:05,088 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:18:05,088 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:18:05,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:18:05,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:18:05,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:18:05,165 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:18:05,166 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:18:05,166 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 12:18:05,234 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e7234d92/8ada8c40a0d8435a91c46a6ad307f697/FLAG7d6da7df6 [2018-10-24 12:18:05,706 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:18:05,707 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 12:18:05,713 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e7234d92/8ada8c40a0d8435a91c46a6ad307f697/FLAG7d6da7df6 [2018-10-24 12:18:05,736 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1e7234d92/8ada8c40a0d8435a91c46a6ad307f697 [2018-10-24 12:18:05,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:18:05,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:18:05,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:18:05,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:18:05,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:18:05,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:05,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a61b580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05, skipping insertion in model container [2018-10-24 12:18:05,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:05,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:18:05,789 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:18:05,961 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:18:05,965 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:18:05,981 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:18:05,996 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:18:05,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05 WrapperNode [2018-10-24 12:18:05,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:18:05,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:18:05,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:18:05,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:18:06,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:18:06,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:18:06,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:18:06,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:18:06,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (1/1) ... [2018-10-24 12:18:06,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:18:06,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:18:06,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:18:06,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:18:06,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (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 [2018-10-24 12:18:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:18:06,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:18:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:18:06,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:18:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:18:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:18:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:18:06,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:18:06,360 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:18:06,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:18:06 BoogieIcfgContainer [2018-10-24 12:18:06,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:18:06,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:18:06,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:18:06,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:18:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:18:05" (1/3) ... [2018-10-24 12:18:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e653c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:18:06, skipping insertion in model container [2018-10-24 12:18:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:18:05" (2/3) ... [2018-10-24 12:18:06,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e653c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:18:06, skipping insertion in model container [2018-10-24 12:18:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:18:06" (3/3) ... [2018-10-24 12:18:06,369 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 12:18:06,379 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:18:06,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:18:06,404 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:18:06,436 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:18:06,437 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:18:06,437 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:18:06,437 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:18:06,437 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:18:06,437 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:18:06,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:18:06,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:18:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-24 12:18:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 12:18:06,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:18:06,462 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:18:06,465 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:18:06,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:18:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1350619, now seen corresponding path program 1 times [2018-10-24 12:18:06,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:18:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:18:06,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:18:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:18:06,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:18:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:18:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:18:06,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:18:06,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:18:06,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:18:06,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:18:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:18:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:18:06,830 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-10-24 12:18:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:18:06,992 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2018-10-24 12:18:06,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:18:06,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-24 12:18:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:18:07,003 INFO L225 Difference]: With dead ends: 43 [2018-10-24 12:18:07,003 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 12:18:07,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:18:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 12:18:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-10-24 12:18:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-24 12:18:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-24 12:18:07,046 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2018-10-24 12:18:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:18:07,047 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-24 12:18:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:18:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-24 12:18:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 12:18:07,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:18:07,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:18:07,048 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:18:07,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:18:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1691970717, now seen corresponding path program 1 times [2018-10-24 12:18:07,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:18:07,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:18:07,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:18:07,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:18:07,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:18:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:18:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:18:07,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:18:07,198 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:18:07,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-24 12:18:07,201 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [13], [16], [22], [25], [27], [30], [32], [33], [34], [35], [37], [38] [2018-10-24 12:18:07,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 12:18:07,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:18:07,447 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 12:18:07,448 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. [2018-10-24 12:18:07,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:18:07,466 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 12:18:07,533 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 75% of their original sizes. [2018-10-24 12:18:07,533 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 12:18:07,620 INFO L413 sIntCurrentIteration]: We have 18 unified AI predicates [2018-10-24 12:18:07,621 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 12:18:07,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:18:07,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-24 12:18:07,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:18:07,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 12:18:07,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 12:18:07,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:18:07,626 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2018-10-24 12:18:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:18:07,876 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-24 12:18:07,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:18:07,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-10-24 12:18:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:18:07,877 INFO L225 Difference]: With dead ends: 22 [2018-10-24 12:18:07,877 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:18:07,878 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:18:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:18:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:18:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:18:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:18:07,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-24 12:18:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:18:07,881 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:18:07,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 12:18:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:18:07,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:18:07,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:18:08,049 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-24 12:18:08,050 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:18:08,050 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:18:08,050 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-24 12:18:08,050 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:18:08,050 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:18:08,050 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 16) the Hoare annotation is: true [2018-10-24 12:18:08,050 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 16) no Hoare annotation was computed. [2018-10-24 12:18:08,051 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 1999998) (<= 0 .cse0))) [2018-10-24 12:18:08,051 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 16) no Hoare annotation was computed. [2018-10-24 12:18:08,051 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2018-10-24 12:18:08,051 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2018-10-24 12:18:08,052 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))) [2018-10-24 12:18:08,052 INFO L425 ceAbstractionStarter]: For program point L12-4(lines 12 14) no Hoare annotation was computed. [2018-10-24 12:18:08,052 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:18:08,052 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:18:08,052 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:18:08,053 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:18:08,053 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:18:08,053 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:18:08,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:18:08 BoogieIcfgContainer [2018-10-24 12:18:08,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:18:08,064 INFO L168 Benchmark]: Toolchain (without parser) took 2315.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -715.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2018-10-24 12:18:08,066 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-24 12:18:08,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.79 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. [2018-10-24 12:18:08,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.37 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. [2018-10-24 12:18:08,069 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 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. [2018-10-24 12:18:08,070 INFO L168 Benchmark]: RCFGBuilder took 317.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:18:08,071 INFO L168 Benchmark]: TraceAbstraction took 1700.92 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: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:18:08,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 246.79 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 21.37 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 24.04 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 317.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1700.92 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: 56.6 MB). Peak memory consumption was 56.6 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, 1.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s 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, 0.3s 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, 0.2s 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, 0.1s 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...