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_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-1-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1de736e-m [2019-02-18 09:31:33,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-18 09:31:33,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-18 09:31:33,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-02-18 09:31:34,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-02-18 09:31:34,050 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-18 09:31:34,050 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-18 09:31:34,051 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-18 09:31:34,051 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-18 09:31:34,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-18 09:31:34,052 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-18 09:31:34,052 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-18 09:31:34,052 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-18 09:31:34,052 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-18 09:31:34,052 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-18 09:31:34,053 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-18 09:31:34,053 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-18 09:31:34,053 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-18 09:31:34,053 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-18 09:31:34,054 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-18 09:31:34,054 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-18 09:31:34,054 INFO L133 SettingsManager]: * Use SBE=true [2019-02-18 09:31:34,054 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-18 09:31:34,055 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-18 09:31:34,056 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-18 09:31:34,056 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-18 09:31:34,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-18 09:31:34,056 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-18 09:31:34,056 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-18 09:31:34,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-18 09:31:34,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-18 09:31:34,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-02-18 09:31:34,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-18 09:31:34,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-18 09:31:34,058 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-18 09:31:34,058 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-18 09:31:34,058 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-18 09:31:34,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-02-18 09:31:34,058 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-18 09:31:34,059 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-18 09:31:34,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-18 09:31:34,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-18 09:31:34,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-18 09:31:34,104 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-18 09:31:34,105 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-18 09:31:34,106 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-1-limited.bpl [2019-02-18 09:31:34,106 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-1-limited.bpl' [2019-02-18 09:31:34,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-18 09:31:34,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-18 09:31:34,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-18 09:31:34,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-18 09:31:34,149 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-18 09:31:34,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-18 09:31:34,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-18 09:31:34,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-18 09:31:34,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-18 09:31:34,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/1) ... [2019-02-18 09:31:34,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-18 09:31:34,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-18 09:31:34,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-18 09:31:34,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-18 09:31:34,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-02-18 09:31:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-18 09:31:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-18 09:31:34,457 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-18 09:31:34,457 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-02-18 09:31:34,459 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:31:34 BoogieIcfgContainer [2019-02-18 09:31:34,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-18 09:31:34,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-18 09:31:34,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-18 09:31:34,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-18 09:31:34,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:31:34" (1/2) ... [2019-02-18 09:31:34,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f5ae57 and model type speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:31:34, skipping insertion in model container [2019-02-18 09:31:34,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:31:34" (2/2) ... [2019-02-18 09:31:34,470 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-1-limited.bpl [2019-02-18 09:31:34,484 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-18 09:31:34,494 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-18 09:31:34,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-18 09:31:34,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-18 09:31:34,548 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-18 09:31:34,548 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-18 09:31:34,548 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-18 09:31:34,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-18 09:31:34,549 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-18 09:31:34,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-18 09:31:34,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-18 09:31:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-02-18 09:31:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-18 09:31:34,577 INFO L394 BasicCegarLoop]: Found error trace [2019-02-18 09:31:34,578 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-18 09:31:34,580 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-18 09:31:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:31:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2019-02-18 09:31:34,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-18 09:31:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:31:34,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:31:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:31:34,638 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-18 09:31:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:31:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:31:34,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-18 09:31:34,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-18 09:31:34,732 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-18 09:31:34,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-18 09:31:34,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-18 09:31:34,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-18 09:31:34,748 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-02-18 09:31:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-18 09:31:34,785 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-02-18 09:31:34,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-18 09:31:34,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-18 09:31:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-18 09:31:34,799 INFO L225 Difference]: With dead ends: 9 [2019-02-18 09:31:34,799 INFO L226 Difference]: Without dead ends: 4 [2019-02-18 09:31:34,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-18 09:31:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2019-02-18 09:31:34,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2019-02-18 09:31:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-02-18 09:31:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2019-02-18 09:31:34,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2019-02-18 09:31:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-18 09:31:34,854 INFO L480 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2019-02-18 09:31:34,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-18 09:31:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2019-02-18 09:31:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-18 09:31:34,858 INFO L394 BasicCegarLoop]: Found error trace [2019-02-18 09:31:34,860 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-18 09:31:34,862 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-18 09:31:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:31:34,864 INFO L82 PathProgramCache]: Analyzing trace with hash 29921, now seen corresponding path program 1 times [2019-02-18 09:31:34,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-18 09:31:34,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:31:34,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:31:34,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-18 09:31:34,866 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-18 09:31:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:31:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:31:35,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:31:35,014 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-18 09:31:35,015 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-18 09:31:35,017 INFO L207 CegarAbsIntRunner]: [0], [4], [6] [2019-02-18 09:31:35,052 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-18 09:31:35,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-18 09:31:35,117 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-18 09:31:35,119 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 14 root evaluator evaluations with a maximum evaluation depth of 2. Performed 14 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-18 09:31:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-18 09:31:35,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-18 09:31:35,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-18 09:31:35,126 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-02-18 09:31:35,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-18 09:31:35,150 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-18 09:31:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-18 09:31:35,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-18 09:31:35,247 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-02-18 09:31:35,249 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-18 09:31:35,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:31:35,271 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-02-18 09:31:35,308 INFO L701 Elim1Store]: detected not equals via solver [2019-02-18 09:31:35,312 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2019-02-18 09:31:35,312 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-02-18 09:31:35,316 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-02-18 09:31:35,316 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:5 [2019-02-18 09:31:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:31:35,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-18 09:31:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-18 09:31:35,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-02-18 09:31:35,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 5 [2019-02-18 09:31:35,427 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-18 09:31:35,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-18 09:31:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-18 09:31:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-02-18 09:31:35,428 INFO L87 Difference]: Start difference. First operand 4 states and 4 transitions. Second operand 4 states. [2019-02-18 09:31:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-18 09:31:35,476 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2019-02-18 09:31:35,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-18 09:31:35,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-02-18 09:31:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-18 09:31:35,477 INFO L225 Difference]: With dead ends: 4 [2019-02-18 09:31:35,477 INFO L226 Difference]: Without dead ends: 0 [2019-02-18 09:31:35,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-02-18 09:31:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-02-18 09:31:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-02-18 09:31:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-02-18 09:31:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-02-18 09:31:35,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-02-18 09:31:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-18 09:31:35,479 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-02-18 09:31:35,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-18 09:31:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-18 09:31:35,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-18 09:31:35,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-02-18 09:31:35,499 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 7 9) no Hoare annotation was computed. [2019-02-18 09:31:35,499 INFO L448 ceAbstractionStarter]: For program point L14(lines 7 28) no Hoare annotation was computed. [2019-02-18 09:31:35,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 7 9) no Hoare annotation was computed. [2019-02-18 09:31:35,500 INFO L444 ceAbstractionStarter]: At program point L21-1(lines 21 24) the Hoare annotation is: (<= 0 (select |#memory_int| ULTIMATE.start_main_p1)) [2019-02-18 09:31:35,500 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 26) no Hoare annotation was computed. [2019-02-18 09:31:35,509 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-1-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 09:31:35 BoogieIcfgContainer [2019-02-18 09:31:35,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-02-18 09:31:35,511 INFO L168 Benchmark]: Toolchain (without parser) took 1363.90 ms. Allocated memory was 133.7 MB in the beginning and 169.9 MB in the end (delta: 36.2 MB). Free memory was 107.6 MB in the beginning and 136.4 MB in the end (delta: -28.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2019-02-18 09:31:35,513 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.7 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-18 09:31:35,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 133.7 MB. Free memory was 107.6 MB in the beginning and 105.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-02-18 09:31:35,515 INFO L168 Benchmark]: Boogie Preprocessor took 21.03 ms. Allocated memory is still 133.7 MB. Free memory was 105.4 MB in the beginning and 104.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-02-18 09:31:35,516 INFO L168 Benchmark]: RCFGBuilder took 235.05 ms. Allocated memory is still 133.7 MB. Free memory was 104.3 MB in the beginning and 95.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2019-02-18 09:31:35,517 INFO L168 Benchmark]: TraceAbstraction took 1048.37 ms. Allocated memory was 133.7 MB in the beginning and 169.9 MB in the end (delta: 36.2 MB). Free memory was 95.4 MB in the beginning and 136.4 MB in the end (delta: -41.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-02-18 09:31:35,522 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 0.18 ms. Allocated memory is still 133.7 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 133.7 MB. Free memory was 107.6 MB in the beginning and 105.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.03 ms. Allocated memory is still 133.7 MB. Free memory was 105.4 MB in the beginning and 104.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.05 ms. Allocated memory is still 133.7 MB. Free memory was 104.3 MB in the beginning and 95.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1048.37 ms. Allocated memory was 133.7 MB in the beginning and 169.9 MB in the end (delta: 36.2 MB). Free memory was 95.4 MB in the beginning and 136.4 MB in the end (delta: -41.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 21]: Loop Invariant Derived loop invariant: 0 <= #memory_int[p1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN 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, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...