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_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:26:16,040 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:26:16,042 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:26:16,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:26:16,054 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:26:16,055 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:26:16,057 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:26:16,059 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:26:16,061 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:26:16,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:26:16,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 16:26:16,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 16:26:16,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 16:26:16,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 16:26:16,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 16:26:16,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 16:26:16,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 16:26:16,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 16:26:16,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 16:26:16,075 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 16:26:16,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 16:26:16,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 16:26:16,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 16:26:16,090 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:26:16,113 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:26:16,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:26:16,114 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:26:16,114 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:26:16,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:26:16,114 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:26:16,115 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:26:16,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:26:16,115 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:26:16,116 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:26:16,117 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:26:16,117 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:26:16,118 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:26:16,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:26:16,119 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:26:16,119 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:26:16,119 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:26:16,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:26:16,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:26:16,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:26:16,120 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:26:16,120 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:26:16,121 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:26:16,121 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:26:16,122 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:26:16,122 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:26:16,122 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:26:16,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:26:16,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:26:16,123 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:26:16,125 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:26:16,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:26:16,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:26:16,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:26:16,193 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:26:16,194 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:26:16,194 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl [2018-12-03 16:26:16,195 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005b.c.i_4.bpl' [2018-12-03 16:26:16,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:26:16,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:26:16,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:26:16,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:26:16,232 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:26:16,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:26:16,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:26:16,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:26:16,267 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:26:16,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/1) ... [2018-12-03 16:26:16,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:26:16,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:26:16,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:26:16,288 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:26:16,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (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 16:26:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:26:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:26:16,556 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:26:16,557 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 16:26:16,557 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:26:16 BoogieIcfgContainer [2018-12-03 16:26:16,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:26:16,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:26:16,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:26:16,562 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:26:16,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:26:16" (1/2) ... [2018-12-03 16:26:16,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c18ec2 and model type cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:26:16, skipping insertion in model container [2018-12-03 16:26:16,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:26:16" (2/2) ... [2018-12-03 16:26:16,566 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b.c.i_4.bpl [2018-12-03 16:26:16,576 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:26:16,583 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:26:16,599 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:26:16,632 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:26:16,632 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:26:16,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:26:16,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:26:16,633 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:26:16,633 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:26:16,633 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:26:16,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:26:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-03 16:26:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 16:26:16,654 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:26:16,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 16:26:16,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:26:16,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:26:16,664 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 16:26:16,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:26:16,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:16,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:26:16,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:16,711 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:26:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:26:16,804 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 16:26:16,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:26:16,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:26:16,806 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:26:16,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:26:16,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:26:16,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:26:16,825 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-03 16:26:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:26:16,882 INFO L93 Difference]: Finished difference Result 10 states and 15 transitions. [2018-12-03 16:26:16,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:26:16,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 16:26:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:26:16,895 INFO L225 Difference]: With dead ends: 10 [2018-12-03 16:26:16,895 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 16:26:16,899 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 [2018-12-03 16:26:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 16:26:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 16:26:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 16:26:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-03 16:26:16,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3 [2018-12-03 16:26:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:26:16,949 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-03 16:26:16,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:26:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2018-12-03 16:26:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 16:26:16,950 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:26:16,950 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-03 16:26:16,951 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:26:16,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:26:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash 28852267, now seen corresponding path program 1 times [2018-12-03 16:26:16,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:26:16,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:16,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:26:16,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:16,954 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:26:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:26:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:26:17,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:26:17,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:26:17,030 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:26:17,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:26:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:26:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:26:17,033 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 3 states. [2018-12-03 16:26:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:26:17,073 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-12-03 16:26:17,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:26:17,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-03 16:26:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:26:17,074 INFO L225 Difference]: With dead ends: 11 [2018-12-03 16:26:17,075 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 16:26:17,076 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 [2018-12-03 16:26:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 16:26:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 16:26:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 16:26:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-12-03 16:26:17,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-12-03 16:26:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:26:17,079 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-03 16:26:17,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:26:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-12-03 16:26:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 16:26:17,080 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:26:17,080 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-03 16:26:17,080 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:26:17,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:26:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 894489354, now seen corresponding path program 1 times [2018-12-03 16:26:17,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:26:17,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:17,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:26:17,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:26:17,083 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:26:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:26:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 16:26:17,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:26:17,153 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:26:17,155 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 16:26:17,157 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9], [15], [17] [2018-12-03 16:26:17,196 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:26:17,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:26:17,511 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 16:26:17,513 INFO L272 AbstractInterpreter]: Visited 5 different actions 27 times. Merged at 3 different actions 11 times. Widened at 2 different actions 4 times. Found 7 fixpoints after 3 different actions. Largest state had 0 variables. [2018-12-03 16:26:17,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:26:17,562 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 16:26:17,636 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 66.67% of their original sizes. [2018-12-03 16:26:17,637 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 16:26:17,664 INFO L418 sIntCurrentIteration]: We unified 5 AI predicates to 5 [2018-12-03 16:26:17,664 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 16:26:17,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 16:26:17,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2018-12-03 16:26:17,665 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:26:17,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 16:26:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 16:26:17,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:26:17,667 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-12-03 16:26:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:26:17,784 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2018-12-03 16:26:17,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 16:26:17,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-03 16:26:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:26:17,784 INFO L225 Difference]: With dead ends: 8 [2018-12-03 16:26:17,784 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:26:17,785 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 16:26:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:26:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:26:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:26:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:26:17,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 16:26:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:26:17,786 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:26:17,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 16:26:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:26:17,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:26:17,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:26:17,887 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 53) no Hoare annotation was computed. [2018-12-03 16:26:17,887 INFO L444 ceAbstractionStarter]: At program point L31(lines 31 36) the Hoare annotation is: false [2018-12-03 16:26:17,888 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 53) no Hoare annotation was computed. [2018-12-03 16:26:17,888 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 53) no Hoare annotation was computed. [2018-12-03 16:26:17,888 INFO L451 ceAbstractionStarter]: At program point L52(lines 35 52) the Hoare annotation is: true [2018-12-03 16:26:17,888 INFO L444 ceAbstractionStarter]: At program point L48(lines 18 48) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~j~4 0)) (or (and (= ULTIMATE.start_main_~k~4 9) (= ULTIMATE.start_main_~i~4 0)) (= ULTIMATE.start_main_~k~4 4))) [2018-12-03 16:26:17,889 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 37) no Hoare annotation was computed. [2018-12-03 16:26:17,896 INFO L202 PluginConnector]: Adding new model cggmp2005b.c.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:26:17 BoogieIcfgContainer [2018-12-03 16:26:17,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:26:17,897 INFO L168 Benchmark]: Toolchain (without parser) took 1667.09 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 16:26:17,899 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:26:17,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.07 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 16:26:17,901 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 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 16:26:17,901 INFO L168 Benchmark]: RCFGBuilder took 269.77 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 16:26:17,903 INFO L168 Benchmark]: TraceAbstraction took 1337.76 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 16:26:17,907 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.07 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 21.17 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 269.77 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 1337.76 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: - PositiveResult [Line: 37]: 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: 31]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !(main_~j~4 == 0) && ((main_~k~4 == 9 && main_~i~4 == 0) || main_~k~4 == 4) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.6666666666666666 AbsIntWeakeningRatio, 0.6 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...