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_compound_oct_cong.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement-simplified01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:17:28,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:17:28,801 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:17:28,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:17:28,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:17:28,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:17:28,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:17:28,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:17:28,829 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:17:28,830 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:17:28,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 18:17:28,878 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 18:17:28,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:17:28,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:17:28,899 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:17:28,899 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:17:28,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:17:28,899 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:17:28,902 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:17:28,903 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:17:28,903 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:17:28,903 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:17:28,903 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:17:28,904 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:17:28,904 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:17:28,905 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:17:28,905 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:17:28,905 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:17:28,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:17:28,906 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:17:28,906 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:17:28,906 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:17:28,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:17:28,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:17:28,908 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:17:28,908 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:17:28,908 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:17:28,909 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:17:28,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:17:28,909 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:17:28,909 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:17:28,909 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:17:28,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:17:28,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:17:28,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:17:28,911 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:17:28,911 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:17:28,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:17:28,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:17:28,912 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:17:28,912 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:17:28,971 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:17:28,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:17:28,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:17:28,992 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:17:28,993 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:17:28,994 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement-simplified01.bpl [2018-12-03 18:17:28,995 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/PointerIncrement-simplified01.bpl' [2018-12-03 18:17:29,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:17:29,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:17:29,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:17:29,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:17:29,047 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:17:29,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,088 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 18:17:29,089 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 18:17:29,089 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 18:17:29,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:17:29,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:17:29,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:17:29,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:17:29,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/1) ... [2018-12-03 18:17:29,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:17:29,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:17:29,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:17:29,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:17:29,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (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 [2018-12-03 18:17:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 18:17:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 18:17:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 18:17:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure ~malloc [2018-12-03 18:17:29,524 INFO L272 CfgBuilder]: Using library mode [2018-12-03 18:17:29,525 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:17:29,526 INFO L202 PluginConnector]: Adding new model PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:29 BoogieIcfgContainer [2018-12-03 18:17:29,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:17:29,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:17:29,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:17:29,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:17:29,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:17:29" (1/2) ... [2018-12-03 18:17:29,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5635e388 and model type PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:17:29, skipping insertion in model container [2018-12-03 18:17:29,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PointerIncrement-simplified01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:17:29" (2/2) ... [2018-12-03 18:17:29,548 INFO L112 eAbstractionObserver]: Analyzing ICFG PointerIncrement-simplified01.bpl [2018-12-03 18:17:29,570 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:17:29,589 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-03 18:17:29,622 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-03 18:17:29,667 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:17:29,667 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:17:29,667 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:17:29,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:17:29,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:17:29,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:17:29,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:17:29,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:17:29,685 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-12-03 18:17:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:17:29,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:29,692 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:17:29,695 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:29,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash 927591, now seen corresponding path program 1 times [2018-12-03 18:17:29,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:29,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:29,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:29,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:29,758 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:29,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:29,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 18:17:29,887 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:29,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:29,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:29,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:29,906 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2018-12-03 18:17:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:29,948 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2018-12-03 18:17:29,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:29,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 18:17:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:29,980 INFO L225 Difference]: With dead ends: 14 [2018-12-03 18:17:29,980 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 18:17:29,985 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 [2018-12-03 18:17:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 18:17:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 18:17:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 18:17:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-12-03 18:17:30,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2018-12-03 18:17:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:30,032 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-03 18:17:30,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-03 18:17:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:17:30,033 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:30,033 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:17:30,034 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:30,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:30,034 INFO L82 PathProgramCache]: Analyzing trace with hash 927592, now seen corresponding path program 1 times [2018-12-03 18:17:30,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:30,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:30,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,036 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:30,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:30,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 18:17:30,133 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:30,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:30,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:30,136 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 3 states. [2018-12-03 18:17:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:30,185 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2018-12-03 18:17:30,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:30,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 18:17:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:30,186 INFO L225 Difference]: With dead ends: 13 [2018-12-03 18:17:30,186 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 18:17:30,187 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 [2018-12-03 18:17:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 18:17:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-12-03 18:17:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-03 18:17:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-12-03 18:17:30,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2018-12-03 18:17:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:30,192 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-12-03 18:17:30,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-12-03 18:17:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-03 18:17:30,192 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:30,193 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-12-03 18:17:30,193 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:30,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:30,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1869902812, now seen corresponding path program 1 times [2018-12-03 18:17:30,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:30,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:30,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,195 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:30,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:17:30,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 18:17:30,263 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:17:30,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:17:30,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:17:30,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:30,265 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2018-12-03 18:17:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:17:30,292 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-12-03 18:17:30,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:17:30,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-03 18:17:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:17:30,293 INFO L225 Difference]: With dead ends: 17 [2018-12-03 18:17:30,293 INFO L226 Difference]: Without dead ends: 10 [2018-12-03 18:17:30,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:17:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-03 18:17:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-03 18:17:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-03 18:17:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-12-03 18:17:30,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-12-03 18:17:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:17:30,298 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-12-03 18:17:30,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:17:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-12-03 18:17:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 18:17:30,299 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:17:30,299 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-12-03 18:17:30,299 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATIONPRE_CONDITION, mainErr1REQUIRES_VIOLATIONPRE_CONDITION]=== [2018-12-03 18:17:30,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:17:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash 342113753, now seen corresponding path program 1 times [2018-12-03 18:17:30,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:17:30,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:17:30,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:17:30,302 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:17:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:17:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:17:30,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:17:30,527 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 18:17:30,528 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 10 with the following transitions: [2018-12-03 18:17:30,531 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [8], [10], [11], [19] [2018-12-03 18:17:30,582 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:17:30,583 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:17:30,621 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: Unknonwn type of statement: CallStatement[false,[VariableLHS[#t~malloc0.base,],VariableLHS[#t~malloc0.offset,]],~malloc,[IntegerLiteral[400]]] at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: Unknonwn type of statement: CallStatement[false,[VariableLHS[#t~malloc0.base,],VariableLHS[#t~malloc0.offset,]],~malloc,[IntegerLiteral[400]]] at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainStatementProcessor.process(ArrayDomainStatementProcessor.java:51) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.handleInternalTransition(ArrayDomainPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:70) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.array.ArrayDomainPostOperator.apply(ArrayDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-03 18:17:30,627 INFO L168 Benchmark]: Toolchain (without parser) took 1582.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-12-03 18:17:30,629 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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. [2018-12-03 18:17:30,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.80 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. [2018-12-03 18:17:30,630 INFO L168 Benchmark]: Boogie Preprocessor took 31.99 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. [2018-12-03 18:17:30,631 INFO L168 Benchmark]: RCFGBuilder took 401.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 18:17:30,633 INFO L168 Benchmark]: TraceAbstraction took 1092.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 18:17:30,639 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 0.23 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. * Boogie Procedure Inliner took 44.80 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. * Boogie Preprocessor took 31.99 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. * RCFGBuilder took 401.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1092.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: Unknonwn type of statement: CallStatement[false,[VariableLHS[#t~malloc0.base,],VariableLHS[#t~malloc0.offset,]],~malloc,[IntegerLiteral[400]]] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: Unknonwn type of statement: CallStatement[false,[VariableLHS[#t~malloc0.base,],VariableLHS[#t~malloc0.offset,]],~malloc,[IntegerLiteral[400]]]: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...