java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-18 17:55:45,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 17:55:45,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 17:55:45,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-18 17:55:45,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-18 17:55:45,102 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-18 17:55:45,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-18 17:55:45,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-18 17:55:45,110 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-18 17:55:45,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-18 17:55:45,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-18 17:55:45,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-01-18 17:55:45,180 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 17:55:45,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 17:55:45,181 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 17:55:45,181 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 17:55:45,182 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 17:55:45,182 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 17:55:45,182 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 17:55:45,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 17:55:45,183 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 17:55:45,183 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-18 17:55:45,183 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-18 17:55:45,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 17:55:45,183 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 17:55:45,184 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 17:55:45,184 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 17:55:45,185 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 17:55:45,185 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 17:55:45,185 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 17:55:45,185 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 17:55:45,185 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 17:55:45,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 17:55:45,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 17:55:45,187 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 17:55:45,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 17:55:45,187 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 17:55:45,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 17:55:45,188 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 17:55:45,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 17:55:45,188 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 17:55:45,188 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 17:55:45,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 17:55:45,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 17:55:45,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 17:55:45,189 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 17:55:45,189 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 17:55:45,190 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 17:55:45,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 17:55:45,190 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 17:55:45,190 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 17:55:45,222 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 17:55:45,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 17:55:45,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 17:55:45,240 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 17:55:45,240 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 17:55:45,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2019-01-18 17:55:45,242 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2019-01-18 17:55:45,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 17:55:45,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 17:55:45,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 17:55:45,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 17:55:45,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 17:55:45,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,316 WARN L165 Inliner]: Program contained no entry procedure! [2019-01-18 17:55:45,317 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-01-18 17:55:45,317 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-01-18 17:55:45,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 17:55:45,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 17:55:45,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 17:55:45,322 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 17:55:45,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/1) ... [2019-01-18 17:55:45,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 17:55:45,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 17:55:45,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 17:55:45,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 17:55:45,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (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 [2019-01-18 17:55:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-18 17:55:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-18 17:55:45,613 INFO L278 CfgBuilder]: Using library mode [2019-01-18 17:55:45,613 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-18 17:55:45,615 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:55:45 BoogieIcfgContainer [2019-01-18 17:55:45,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 17:55:45,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-18 17:55:45,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-18 17:55:45,619 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-18 17:55:45,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:55:45" (1/2) ... [2019-01-18 17:55:45,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b52adea and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:55:45, skipping insertion in model container [2019-01-18 17:55:45,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:55:45" (2/2) ... [2019-01-18 17:55:45,623 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2019-01-18 17:55:45,633 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-18 17:55:45,640 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-18 17:55:45,657 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-18 17:55:45,686 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-18 17:55:45,686 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-18 17:55:45,687 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-18 17:55:45,687 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-18 17:55:45,687 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-18 17:55:45,687 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-18 17:55:45,687 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-18 17:55:45,687 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-18 17:55:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-01-18 17:55:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 17:55:45,708 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:55:45,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 17:55:45,711 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:55:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:55:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-01-18 17:55:45,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:55:45,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:55:45,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:55:45,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:55:45,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:55:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:55:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:55:45,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-18 17:55:45,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-18 17:55:45,862 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 17:55:45,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-18 17:55:45,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-18 17:55:45,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 17:55:45,881 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-01-18 17:55:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:55:45,913 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-01-18 17:55:45,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-18 17:55:45,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-01-18 17:55:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:55:45,927 INFO L225 Difference]: With dead ends: 11 [2019-01-18 17:55:45,927 INFO L226 Difference]: Without dead ends: 5 [2019-01-18 17:55:45,931 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 17:55:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-01-18 17:55:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-01-18 17:55:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-01-18 17:55:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-01-18 17:55:45,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-01-18 17:55:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:55:45,967 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-01-18 17:55:45,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-18 17:55:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-01-18 17:55:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-18 17:55:45,968 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 17:55:45,968 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-18 17:55:45,969 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-01-18 17:55:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:55:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-01-18 17:55:45,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 17:55:45,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:55:45,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 17:55:45,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 17:55:45,971 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 17:55:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 17:55:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 17:55:46,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 17:55:46,123 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 17:55:46,124 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-01-18 17:55:46,128 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [7] [2019-01-18 17:55:46,246 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-18 17:55:46,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 17:55:47,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-01-18 17:55:47,006 INFO L272 AbstractInterpreter]: Visited 4 different actions 28 times. Merged at 1 different actions 12 times. Widened at 1 different actions 8 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-18 17:55:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 17:55:47,012 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-01-18 17:55:47,130 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2019-01-18 17:55:47,131 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-01-18 17:55:47,226 INFO L420 sIntCurrentIteration]: We unified 3 AI predicates to 3 [2019-01-18 17:55:47,227 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-01-18 17:55:47,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-18 17:55:47,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2019-01-18 17:55:47,229 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 17:55:47,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-18 17:55:47,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-18 17:55:47,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-18 17:55:47,232 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-01-18 17:55:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 17:55:47,413 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-01-18 17:55:47,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-18 17:55:47,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-01-18 17:55:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 17:55:47,414 INFO L225 Difference]: With dead ends: 5 [2019-01-18 17:55:47,414 INFO L226 Difference]: Without dead ends: 0 [2019-01-18 17:55:47,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-18 17:55:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-18 17:55:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-18 17:55:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-18 17:55:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-18 17:55:47,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-01-18 17:55:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 17:55:47,417 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-18 17:55:47,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-18 17:55:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-18 17:55:47,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-18 17:55:47,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-18 17:55:47,444 INFO L444 ceAbstractionStarter]: At program point L15-1(lines 15 17) the Hoare annotation is: (<= 0 (* 2 main_i)) [2019-01-18 17:55:47,444 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 10 22) no Hoare annotation was computed. [2019-01-18 17:55:47,445 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-01-18 17:55:47,445 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-01-18 17:55:47,445 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-01-18 17:55:47,445 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 21) no Hoare annotation was computed. [2019-01-18 17:55:47,450 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 05:55:47 BoogieIcfgContainer [2019-01-18 17:55:47,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-18 17:55:47,451 INFO L168 Benchmark]: Toolchain (without parser) took 2172.86 ms. Allocated memory was 133.2 MB in the beginning and 217.1 MB in the end (delta: 83.9 MB). Free memory was 108.4 MB in the beginning and 192.7 MB in the end (delta: -84.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:55:47,453 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 133.2 MB. Free memory is still 109.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:55:47,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.57 ms. Allocated memory is still 133.2 MB. Free memory was 108.4 MB in the beginning and 106.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-01-18 17:55:47,454 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-01-18 17:55:47,455 INFO L168 Benchmark]: RCFGBuilder took 267.35 ms. Allocated memory is still 133.2 MB. Free memory was 105.3 MB in the beginning and 96.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. [2019-01-18 17:55:47,456 INFO L168 Benchmark]: TraceAbstraction took 1834.44 ms. Allocated memory was 133.2 MB in the beginning and 217.1 MB in the end (delta: 83.9 MB). Free memory was 96.5 MB in the beginning and 192.7 MB in the end (delta: -96.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 17:55:47,461 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 133.2 MB. Free memory is still 109.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.57 ms. Allocated memory is still 133.2 MB. Free memory was 108.4 MB in the beginning and 106.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.35 ms. Allocated memory is still 133.2 MB. Free memory was 105.3 MB in the beginning and 96.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1834.44 ms. Allocated memory was 133.2 MB in the beginning and 217.1 MB in the end (delta: 83.9 MB). Free memory was 96.5 MB in the beginning and 192.7 MB in the end (delta: -96.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 <= 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 5 HoareAnnotationTreeSize, 1 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...