java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerBplInlineTransformed.xml --icfgtransformation.transformationtype MAP_ELIMINATION_MONNIAUX --rcfgbuilder.size.of.a.code.block SingleStatement --icfgtransformation.map.elimination.monniaux.number.of.cells 1 -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/n.c11.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 09:36:42,319 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 09:36:42,321 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 09:36:42,333 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 09:36:42,333 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 09:36:42,334 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 09:36:42,336 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 09:36:42,338 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 09:36:42,340 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 09:36:42,341 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 09:36:42,342 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 09:36:42,342 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 09:36:42,343 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 09:36:42,344 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 09:36:42,345 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 09:36:42,346 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 09:36:42,347 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 09:36:42,349 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 09:36:42,352 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 09:36:42,353 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 09:36:42,355 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 09:36:42,356 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 09:36:42,359 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 09:36:42,359 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 09:36:42,359 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 09:36:42,360 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 09:36:42,361 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 09:36:42,362 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 09:36:42,362 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 09:36:42,363 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 09:36:42,364 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 09:36:42,365 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 09:36:42,366 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... 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Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: TransformationType -> MAP_ELIMINATION_MONNIAUX Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: Map elimination Monniaux: number of cells -> 1 [2019-05-23 09:36:42,400 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 09:36:42,412 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 09:36:42,416 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 09:36:42,417 INFO L146 ILogger]: Initializing Boogie PL CUP Parser... [2019-05-23 09:36:42,418 INFO L146 ILogger]: Boogie PL CUP Parser initialized [2019-05-23 09:36:42,418 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/n.c11.i_3.bpl [2019-05-23 09:36:42,419 INFO L146 ILogger]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/n.c11.i_3.bpl' [2019-05-23 09:36:42,451 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 09:36:42,452 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 09:36:42,453 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 09:36:42,453 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 09:36:42,453 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 09:36:42,469 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,480 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,488 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 09:36:42,488 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 09:36:42,489 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 09:36:42,489 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 09:36:42,500 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,500 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,501 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,501 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,504 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,506 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,507 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:42,508 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 09:36:42,509 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 09:36:42,509 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 09:36:42,509 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 09:36:42,510 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (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:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 09:36:42,575 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 09:36:42,575 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 09:36:42,974 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 09:36:42,975 INFO L146 ILogger]: Removed 1 assume(true) statements. [2019-05-23 09:36:42,976 INFO L146 ILogger]: Adding new model n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:42 BoogieIcfgContainer [2019-05-23 09:36:42,976 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 09:36:42,977 INFO L146 ILogger]: ------------------------IcfgTransformer---------------------------- [2019-05-23 09:36:42,977 INFO L146 ILogger]: Initializing IcfgTransformer... [2019-05-23 09:36:42,978 INFO L146 ILogger]: IcfgTransformer initialized [2019-05-23 09:36:42,982 INFO L146 ILogger]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:42" (1/1) ... [2019-05-23 09:36:43,016 INFO L146 ILogger]: L36 [2019-05-23 09:36:43,016 INFO L146 ILogger]: In Formula: (= v_ULTIMATE.start_main_~a~5_3 (store v_ULTIMATE.start_main_~a~5_4 (mod v_ULTIMATE.start_main_~len~5_5 4294967296) 0)) InVars {ULTIMATE.start_main_~a~5=v_ULTIMATE.start_main_~a~5_4, ULTIMATE.start_main_~len~5=v_ULTIMATE.start_main_~len~5_5} OutVars{ULTIMATE.start_main_~a~5=v_ULTIMATE.start_main_~a~5_3, ULTIMATE.start_main_~len~5=v_ULTIMATE.start_main_~len~5_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~5] [2019-05-23 09:36:43,017 INFO L146 ILogger]: Out Formula: (and v_ULTIMATE.start_main_~a~5_idx_0_term_assigned_1 (or (not v_ULTIMATE.start_main_~a~5_idx_0_term_assigned_1) (= (mod v_ULTIMATE.start_main_~len~5_5 4294967296) v_ULTIMATE.start_main_~a~5_idx_0_term_1)) (= v_ULTIMATE.start_main_~a~5_val_0_out_1 v_ULTIMATE.start_main_~a~5_val_0_in_1) (or (= v_ULTIMATE.start_main_~a~5_val_0_in_1 0) (not (= (mod v_ULTIMATE.start_main_~len~5_5 4294967296) v_ULTIMATE.start_main_~a~5_idx_0_term_1)))) InVars {ULTIMATE.start_main_~a~5_idx_0=v_ULTIMATE.start_main_~a~5_idx_0_term_1, ULTIMATE.start_main_~a~5_idx_0_bool=v_ULTIMATE.start_main_~a~5_idx_0_term_assigned_1, ULTIMATE.start_main_~a~5_val_0=v_ULTIMATE.start_main_~a~5_val_0_in_1, ULTIMATE.start_main_~len~5=v_ULTIMATE.start_main_~len~5_5} OutVars{ULTIMATE.start_main_~a~5_idx_0=v_ULTIMATE.start_main_~a~5_idx_0_term_1, ULTIMATE.start_main_~a~5_idx_0_bool=v_ULTIMATE.start_main_~a~5_idx_0_term_assigned_1, ULTIMATE.start_main_~a~5_val_0=v_ULTIMATE.start_main_~a~5_val_0_out_1, ULTIMATE.start_main_~len~5=v_ULTIMATE.start_main_~len~5_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~5_val_0] [2019-05-23 09:36:43,017 INFO L146 ILogger]: L37 [2019-05-23 09:36:43,027 INFO L146 ILogger]: Adding new model n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.05 09:36:43 BasicIcfg [2019-05-23 09:36:43,027 INFO L146 ILogger]: ------------------------ END IcfgTransformer---------------------------- [2019-05-23 09:36:43,029 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 09:36:43,029 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 09:36:43,033 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 09:36:43,033 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:42" (1/3) ... [2019-05-23 09:36:43,035 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d43dc3 and model type n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 09:36:43, skipping insertion in model container [2019-05-23 09:36:43,035 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:42" (2/3) ... [2019-05-23 09:36:43,036 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d43dc3 and model type n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:36:43, skipping insertion in model container [2019-05-23 09:36:43,036 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.05 09:36:43" (3/3) ... [2019-05-23 09:36:43,038 INFO L146 ILogger]: Analyzing ICFG n.c11.i_3.bplME [2019-05-23 09:36:43,065 INFO L146 ILogger]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-05-23 09:36:43,075 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 09:36:43,112 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 09:36:43,145 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 09:36:43,146 INFO L146 ILogger]: Interprodecural is true [2019-05-23 09:36:43,146 INFO L146 ILogger]: Hoare is false [2019-05-23 09:36:43,146 INFO L146 ILogger]: Compute interpolants for ForwardPredicates [2019-05-23 09:36:43,146 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 09:36:43,146 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 09:36:43,147 INFO L146 ILogger]: Difference is false [2019-05-23 09:36:43,147 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 09:36:43,147 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 09:36:43,159 INFO L146 ILogger]: Start isEmpty. Operand 22 states. [2019-05-23 09:36:43,169 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 14 [2019-05-23 09:36:43,169 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:43,170 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:43,173 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:43,179 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:43,179 INFO L146 ILogger]: Analyzing trace with hash 1215222149, now seen corresponding path program 1 times [2019-05-23 09:36:43,231 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:43,276 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:43,279 INFO L146 ILogger]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 09:36:43,285 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:43,389 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:43,392 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 09:36:43,393 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 09:36:43,396 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 09:36:43,408 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 09:36:43,409 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 09:36:43,412 INFO L146 ILogger]: Start difference. First operand 22 states. Second operand 5 states. [2019-05-23 09:36:43,592 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:43,593 INFO L146 ILogger]: Finished difference Result 31 states and 31 transitions. [2019-05-23 09:36:43,594 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 09:36:43,596 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 13 [2019-05-23 09:36:43,597 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:43,611 INFO L146 ILogger]: With dead ends: 31 [2019-05-23 09:36:43,618 INFO L146 ILogger]: Without dead ends: 26 [2019-05-23 09:36:43,620 INFO L146 ILogger]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 09:36:43,650 INFO L146 ILogger]: Start minimizeSevpa. Operand 26 states. [2019-05-23 09:36:43,668 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-05-23 09:36:43,670 INFO L146 ILogger]: Start removeUnreachable. Operand 21 states. [2019-05-23 09:36:43,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-05-23 09:36:43,673 INFO L146 ILogger]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 13 [2019-05-23 09:36:43,674 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:43,674 INFO L146 ILogger]: Abstraction has 21 states and 21 transitions. [2019-05-23 09:36:43,675 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 09:36:43,675 INFO L146 ILogger]: Start isEmpty. Operand 21 states and 21 transitions. [2019-05-23 09:36:43,676 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 09:36:43,676 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:43,676 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:43,677 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:43,677 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:43,677 INFO L146 ILogger]: Analyzing trace with hash -346643181, now seen corresponding path program 1 times [2019-05-23 09:36:43,679 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:43,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:43,731 INFO L146 ILogger]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 09:36:43,734 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:44,030 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:44,030 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:44,030 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 09:36:44,044 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 09:36:44,045 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 09:36:44,045 INFO L146 ILogger]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-05-23 09:36:44,045 INFO L146 ILogger]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2019-05-23 09:36:44,490 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:44,490 INFO L146 ILogger]: Finished difference Result 38 states and 38 transitions. [2019-05-23 09:36:44,491 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 09:36:44,491 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 20 [2019-05-23 09:36:44,492 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:44,492 INFO L146 ILogger]: With dead ends: 38 [2019-05-23 09:36:44,492 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 09:36:44,495 INFO L146 ILogger]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-05-23 09:36:44,495 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 09:36:44,500 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-05-23 09:36:44,500 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 09:36:44,501 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-05-23 09:36:44,502 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 20 [2019-05-23 09:36:44,503 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:44,503 INFO L146 ILogger]: Abstraction has 28 states and 28 transitions. [2019-05-23 09:36:44,504 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 09:36:44,504 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 28 transitions. [2019-05-23 09:36:44,505 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 09:36:44,505 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:44,505 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:44,505 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:44,506 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:44,506 INFO L146 ILogger]: Analyzing trace with hash -1116580411, now seen corresponding path program 2 times [2019-05-23 09:36:44,509 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:44,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:44,549 INFO L146 ILogger]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 09:36:44,552 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:44,793 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:44,794 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:44,794 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 09:36:44,794 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 09:36:44,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 09:36:44,795 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-05-23 09:36:44,799 INFO L146 ILogger]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-05-23 09:36:45,246 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:45,246 INFO L146 ILogger]: Finished difference Result 45 states and 45 transitions. [2019-05-23 09:36:45,247 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 09:36:45,248 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 27 [2019-05-23 09:36:45,248 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:45,249 INFO L146 ILogger]: With dead ends: 45 [2019-05-23 09:36:45,249 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 09:36:45,250 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-05-23 09:36:45,250 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 09:36:45,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 35. [2019-05-23 09:36:45,254 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 09:36:45,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-05-23 09:36:45,255 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 27 [2019-05-23 09:36:45,256 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:45,256 INFO L146 ILogger]: Abstraction has 35 states and 35 transitions. [2019-05-23 09:36:45,256 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 09:36:45,256 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 35 transitions. [2019-05-23 09:36:45,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 09:36:45,257 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:45,257 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:45,258 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:45,258 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:45,258 INFO L146 ILogger]: Analyzing trace with hash 1885460691, now seen corresponding path program 3 times [2019-05-23 09:36:45,259 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:45,286 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:45,288 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 09:36:45,290 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:45,450 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:45,450 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:45,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 09:36:45,451 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 09:36:45,451 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 09:36:45,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-05-23 09:36:45,452 INFO L146 ILogger]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2019-05-23 09:36:45,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:45,786 INFO L146 ILogger]: Finished difference Result 52 states and 52 transitions. [2019-05-23 09:36:45,787 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 09:36:45,787 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 34 [2019-05-23 09:36:45,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:45,788 INFO L146 ILogger]: With dead ends: 52 [2019-05-23 09:36:45,789 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 09:36:45,790 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-05-23 09:36:45,790 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 09:36:45,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-05-23 09:36:45,794 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 09:36:45,795 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-05-23 09:36:45,795 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 34 [2019-05-23 09:36:45,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:45,796 INFO L146 ILogger]: Abstraction has 42 states and 42 transitions. [2019-05-23 09:36:45,796 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 09:36:45,796 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 42 transitions. [2019-05-23 09:36:45,799 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 09:36:45,799 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:45,799 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:45,799 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:45,799 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:45,800 INFO L146 ILogger]: Analyzing trace with hash 1255762437, now seen corresponding path program 4 times [2019-05-23 09:36:45,800 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:45,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:45,834 INFO L146 ILogger]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 09:36:45,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:46,129 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:46,129 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:46,129 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 09:36:46,130 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 09:36:46,130 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 09:36:46,131 INFO L146 ILogger]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-05-23 09:36:46,131 INFO L146 ILogger]: Start difference. First operand 42 states and 42 transitions. Second operand 13 states. [2019-05-23 09:36:46,895 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:46,896 INFO L146 ILogger]: Finished difference Result 41 states and 40 transitions. [2019-05-23 09:36:46,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 09:36:46,896 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 41 [2019-05-23 09:36:46,896 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:46,896 INFO L146 ILogger]: With dead ends: 41 [2019-05-23 09:36:46,897 INFO L146 ILogger]: Without dead ends: 0 [2019-05-23 09:36:46,897 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2019-05-23 09:36:46,897 INFO L146 ILogger]: Start minimizeSevpa. Operand 0 states. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Start removeUnreachable. Operand 0 states. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-05-23 09:36:46,898 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Abstraction has 0 states and 0 transitions. [2019-05-23 09:36:46,899 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 09:36:46,899 INFO L146 ILogger]: Start isEmpty. Operand 0 states and 0 transitions. [2019-05-23 09:36:46,899 INFO L146 ILogger]: Finished isEmpty. No accepting run. [2019-05-23 09:36:46,902 INFO L146 ILogger]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-05-23 09:36:46,903 INFO L146 ILogger]: Adding new model n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:36:46 BasicIcfg [2019-05-23 09:36:46,904 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 09:36:46,906 INFO L146 ILogger]: Toolchain (without parser) took 4452.89 ms. Allocated memory was 133.2 MB in the beginning and 196.1 MB in the end (delta: 62.9 MB). Free memory was 107.0 MB in the beginning and 133.3 MB in the end (delta: -26.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,907 INFO L146 ILogger]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 133.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,908 INFO L146 ILogger]: Boogie Procedure Inliner took 35.39 ms. Allocated memory is still 133.2 MB. Free memory was 106.8 MB in the beginning and 105.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,909 INFO L146 ILogger]: Boogie Preprocessor took 20.09 ms. Allocated memory is still 133.2 MB. Free memory was 105.2 MB in the beginning and 104.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,910 INFO L146 ILogger]: RCFGBuilder took 467.52 ms. Allocated memory is still 133.2 MB. Free memory was 104.2 MB in the beginning and 94.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,911 INFO L146 ILogger]: IcfgTransformer took 50.01 ms. Allocated memory is still 133.2 MB. Free memory was 94.0 MB in the beginning and 91.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,913 INFO L146 ILogger]: TraceAbstraction took 3875.13 ms. Allocated memory was 133.2 MB in the beginning and 196.1 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 133.3 MB in the end (delta: -41.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:46,918 INFO L146 ILogger]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 133.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.39 ms. Allocated memory is still 133.2 MB. Free memory was 106.8 MB in the beginning and 105.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.09 ms. Allocated memory is still 133.2 MB. Free memory was 105.2 MB in the beginning and 104.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.52 ms. Allocated memory is still 133.2 MB. Free memory was 104.2 MB in the beginning and 94.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * IcfgTransformer took 50.01 ms. Allocated memory is still 133.2 MB. Free memory was 94.0 MB in the beginning and 91.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3875.13 ms. Allocated memory was 133.2 MB in the beginning and 196.1 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 133.3 MB in the end (delta: -41.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 52 SDslu, 582 SDs, 0 SdLazy, 576 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 10310 SizeOfPredicates, 35 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...