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/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 09:36:45,857 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 09:36:45,859 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 09:36:45,871 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 09:36:45,871 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 09:36:45,872 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 09:36:45,874 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 09:36:45,876 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 09:36:45,878 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 09:36:45,878 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 09:36:45,879 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 09:36:45,880 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 09:36:45,881 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 09:36:45,882 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 09:36:45,883 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 09:36:45,884 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 09:36:45,885 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 09:36:45,887 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 09:36:45,889 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 09:36:45,891 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 09:36:45,892 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 09:36:45,893 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 09:36:45,896 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 09:36:45,896 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 09:36:45,896 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 09:36:45,897 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 09:36:45,898 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 09:36:45,899 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 09:36:45,899 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 09:36:45,900 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 09:36:45,901 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 09:36:45,902 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 09:36:45,903 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 09:36:45,903 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 09:36:45,904 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 09:36:45,904 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 09:36:45,905 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 09:36:45,906 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 09:36:45,906 INFO L146 ILogger]: Finished resetting all preferences to default values... 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 09:36:45,936 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 09:36:45,948 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 09:36:45,952 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 09:36:45,953 INFO L146 ILogger]: Initializing Boogie PL CUP Parser... [2019-05-23 09:36:45,954 INFO L146 ILogger]: Boogie PL CUP Parser initialized [2019-05-23 09:36:45,955 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl [2019-05-23 09:36:45,955 INFO L146 ILogger]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl' [2019-05-23 09:36:45,990 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 09:36:45,992 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 09:36:45,994 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 09:36:45,994 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 09:36:45,994 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 09:36:46,011 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,025 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,031 WARN L146 ILogger]: Program contained no entry procedure! [2019-05-23 09:36:46,031 WARN L146 ILogger]: Missing entry procedures: [ULTIMATE.start] [2019-05-23 09:36:46,031 WARN L146 ILogger]: Fallback enabled. All procedures will be processed. [2019-05-23 09:36:46,033 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 09:36:46,034 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 09:36:46,034 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 09:36:46,034 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 09:36:46,046 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,046 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,047 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,047 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,052 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,056 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,057 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... [2019-05-23 09:36:46,058 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 09:36:46,059 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 09:36:46,059 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 09:36:46,059 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 09:36:46,060 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 09:36:46,132 INFO L146 ILogger]: Found specification of procedure proc [2019-05-23 09:36:46,132 INFO L146 ILogger]: Found implementation of procedure proc [2019-05-23 09:36:46,363 INFO L146 ILogger]: Using library mode [2019-05-23 09:36:46,363 INFO L146 ILogger]: Removed 1 assume(true) statements. [2019-05-23 09:36:46,364 INFO L146 ILogger]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:46 BoogieIcfgContainer [2019-05-23 09:36:46,364 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 09:36:46,365 INFO L146 ILogger]: ------------------------IcfgTransformer---------------------------- [2019-05-23 09:36:46,365 INFO L146 ILogger]: Initializing IcfgTransformer... [2019-05-23 09:36:46,367 INFO L146 ILogger]: IcfgTransformer initialized [2019-05-23 09:36:46,370 INFO L146 ILogger]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:46" (1/1) ... [2019-05-23 09:36:46,404 INFO L146 ILogger]: L19 [2019-05-23 09:36:46,405 INFO L146 ILogger]: In Formula: (< (+ v_proc_i_4 4) (select v_proc_a_1 v_proc_j_1)) InVars {proc_a=v_proc_a_1, proc_j=v_proc_j_1, proc_i=v_proc_i_4} OutVars{proc_a=v_proc_a_1, proc_j=v_proc_j_1, proc_i=v_proc_i_4} AuxVars[] AssignedVars[] [2019-05-23 09:36:46,406 INFO L146 ILogger]: Out Formula: (and v_proc_a_idx_0_term_assigned_1 (< (+ v_proc_i_4 4) v_v_proc_a_1_aux_1) (or (not (= v_proc_a_idx_0_term_1 v_proc_j_1)) (= v_v_proc_a_1_aux_1 v_proc_a_val_0_in_1)) (or (not v_proc_a_idx_0_term_assigned_1) (= v_proc_a_idx_0_term_1 v_proc_j_1))) InVars {proc_a_idx_0=v_proc_a_idx_0_term_1, proc_j=v_proc_j_1, proc_a_idx_0_bool=v_proc_a_idx_0_term_assigned_1, proc_a_val_0=v_proc_a_val_0_in_1, proc_i=v_proc_i_4} OutVars{proc_a_idx_0=v_proc_a_idx_0_term_1, proc_j=v_proc_j_1, proc_a_idx_0_bool=v_proc_a_idx_0_term_assigned_1, proc_a_val_0=v_proc_a_val_0_in_1, proc_i=v_proc_i_4} AuxVars[v_v_proc_a_1_aux_1] AssignedVars[] [2019-05-23 09:36:46,406 INFO L146 ILogger]: L20 [2019-05-23 09:36:46,409 INFO L146 ILogger]: L20 [2019-05-23 09:36:46,409 INFO L146 ILogger]: In Formula: (= (select v_proc_a_2 5) 1000) InVars {proc_a=v_proc_a_2} OutVars{proc_a=v_proc_a_2} AuxVars[] AssignedVars[] [2019-05-23 09:36:46,410 INFO L146 ILogger]: Out Formula: (and v_proc_a_idx_0_term_assigned_1 (or (= v_proc_a_val_0_in_2 v_v_proc_a_2_aux_1) (not (= v_proc_a_idx_0_term_2 5))) (= 1000 v_v_proc_a_2_aux_1) (or (not v_proc_a_idx_0_term_assigned_1) (= v_proc_a_idx_0_term_2 5))) InVars {proc_a_idx_0=v_proc_a_idx_0_term_2, proc_a_idx_0_bool=v_proc_a_idx_0_term_assigned_1, proc_a_val_0=v_proc_a_val_0_in_2} OutVars{proc_a_idx_0=v_proc_a_idx_0_term_2, proc_a_idx_0_bool=v_proc_a_idx_0_term_assigned_1, proc_a_val_0=v_proc_a_val_0_in_2} AuxVars[v_v_proc_a_2_aux_1] AssignedVars[] [2019-05-23 09:36:46,410 INFO L146 ILogger]: L21 [2019-05-23 09:36:46,424 INFO L146 ILogger]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.05 09:36:46 BasicIcfg [2019-05-23 09:36:46,425 INFO L146 ILogger]: ------------------------ END IcfgTransformer---------------------------- [2019-05-23 09:36:46,427 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 09:36:46,427 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 09:36:46,430 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 09:36:46,430 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:36:45" (1/3) ... [2019-05-23 09:36:46,432 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aec899d and model type LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 09:36:46, skipping insertion in model container [2019-05-23 09:36:46,433 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:36:46" (2/3) ... [2019-05-23 09:36:46,433 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aec899d and model type LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:36:46, skipping insertion in model container [2019-05-23 09:36:46,434 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.05 09:36:46" (3/3) ... [2019-05-23 09:36:46,435 INFO L146 ILogger]: Analyzing ICFG LargeConstant-ForwardSuccess.bplME [2019-05-23 09:36:46,447 INFO L146 ILogger]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-05-23 09:36:46,456 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 09:36:46,473 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 09:36:46,507 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 09:36:46,508 INFO L146 ILogger]: Interprodecural is true [2019-05-23 09:36:46,508 INFO L146 ILogger]: Hoare is false [2019-05-23 09:36:46,508 INFO L146 ILogger]: Compute interpolants for ForwardPredicates [2019-05-23 09:36:46,508 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 09:36:46,509 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 09:36:46,509 INFO L146 ILogger]: Difference is false [2019-05-23 09:36:46,509 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 09:36:46,509 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 09:36:46,528 INFO L146 ILogger]: Start isEmpty. Operand 9 states. [2019-05-23 09:36:46,539 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 3 [2019-05-23 09:36:46,539 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:46,540 INFO L146 ILogger]: trace histogram [1, 1] [2019-05-23 09:36:46,544 INFO L146 ILogger]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:46,551 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:46,551 INFO L146 ILogger]: Analyzing trace with hash 1378, now seen corresponding path program 1 times [2019-05-23 09:36:46,609 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:46,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:46,647 INFO L146 ILogger]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 09:36:46,652 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:46,736 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 09:36:46,740 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 09:36:46,740 INFO L146 ILogger]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-05-23 09:36:46,745 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 09:36:46,760 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 09:36:46,762 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 09:36:46,765 INFO L146 ILogger]: Start difference. First operand 9 states. Second operand 3 states. [2019-05-23 09:36:46,895 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:46,895 INFO L146 ILogger]: Finished difference Result 16 states and 16 transitions. [2019-05-23 09:36:46,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 09:36:46,898 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 2 [2019-05-23 09:36:46,898 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:46,908 INFO L146 ILogger]: With dead ends: 16 [2019-05-23 09:36:46,908 INFO L146 ILogger]: Without dead ends: 14 [2019-05-23 09:36:46,910 INFO L146 ILogger]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 09:36:46,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 14 states. [2019-05-23 09:36:46,962 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 14 to 9. [2019-05-23 09:36:46,967 INFO L146 ILogger]: Start removeUnreachable. Operand 9 states. [2019-05-23 09:36:46,970 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-05-23 09:36:46,977 INFO L146 ILogger]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2019-05-23 09:36:46,977 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:46,977 INFO L146 ILogger]: Abstraction has 9 states and 9 transitions. [2019-05-23 09:36:46,978 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 09:36:46,978 INFO L146 ILogger]: Start isEmpty. Operand 9 states and 9 transitions. [2019-05-23 09:36:46,978 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 9 [2019-05-23 09:36:46,978 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:46,979 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:36:46,979 INFO L146 ILogger]: === Iteration 2 === [procErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:46,979 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:46,980 INFO L146 ILogger]: Analyzing trace with hash 305801598, now seen corresponding path program 1 times [2019-05-23 09:36:46,981 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:47,006 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:47,009 INFO L146 ILogger]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 09:36:47,011 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:47,114 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 09:36:47,114 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:47,115 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-05-23 09:36:47,116 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 09:36:47,117 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 09:36:47,117 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 09:36:47,118 INFO L146 ILogger]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-05-23 09:36:47,204 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:47,204 INFO L146 ILogger]: Finished difference Result 20 states and 20 transitions. [2019-05-23 09:36:47,204 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 09:36:47,205 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 8 [2019-05-23 09:36:47,205 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:47,206 INFO L146 ILogger]: With dead ends: 20 [2019-05-23 09:36:47,206 INFO L146 ILogger]: Without dead ends: 20 [2019-05-23 09:36:47,207 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 09:36:47,207 INFO L146 ILogger]: Start minimizeSevpa. Operand 20 states. [2019-05-23 09:36:47,210 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 20 to 15. [2019-05-23 09:36:47,210 INFO L146 ILogger]: Start removeUnreachable. Operand 15 states. [2019-05-23 09:36:47,211 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-05-23 09:36:47,211 INFO L146 ILogger]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-05-23 09:36:47,211 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:47,211 INFO L146 ILogger]: Abstraction has 15 states and 15 transitions. [2019-05-23 09:36:47,212 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 09:36:47,212 INFO L146 ILogger]: Start isEmpty. Operand 15 states and 15 transitions. [2019-05-23 09:36:47,212 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 15 [2019-05-23 09:36:47,212 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:47,213 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1] [2019-05-23 09:36:47,213 INFO L146 ILogger]: === Iteration 3 === [procErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:47,213 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:47,214 INFO L146 ILogger]: Analyzing trace with hash 980928666, now seen corresponding path program 2 times [2019-05-23 09:36:47,215 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:47,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:47,232 INFO L146 ILogger]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 09:36:47,233 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:47,311 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:36:47,312 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:47,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-05-23 09:36:47,313 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 09:36:47,313 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 09:36:47,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 09:36:47,314 INFO L146 ILogger]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2019-05-23 09:36:47,374 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:47,374 INFO L146 ILogger]: Finished difference Result 26 states and 26 transitions. [2019-05-23 09:36:47,374 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 09:36:47,375 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 14 [2019-05-23 09:36:47,375 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:47,376 INFO L146 ILogger]: With dead ends: 26 [2019-05-23 09:36:47,377 INFO L146 ILogger]: Without dead ends: 26 [2019-05-23 09:36:47,378 INFO L146 ILogger]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 09:36:47,378 INFO L146 ILogger]: Start minimizeSevpa. Operand 26 states. [2019-05-23 09:36:47,382 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-05-23 09:36:47,382 INFO L146 ILogger]: Start removeUnreachable. Operand 21 states. [2019-05-23 09:36:47,383 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-05-23 09:36:47,383 INFO L146 ILogger]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2019-05-23 09:36:47,384 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:47,384 INFO L146 ILogger]: Abstraction has 21 states and 21 transitions. [2019-05-23 09:36:47,384 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 09:36:47,384 INFO L146 ILogger]: Start isEmpty. Operand 21 states and 21 transitions. [2019-05-23 09:36:47,385 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 09:36:47,385 INFO L146 ILogger]: Found error trace [2019-05-23 09:36:47,385 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1] [2019-05-23 09:36:47,386 INFO L146 ILogger]: === Iteration 4 === [procErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:36:47,386 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:36:47,386 INFO L146 ILogger]: Analyzing trace with hash 1223729846, now seen corresponding path program 3 times [2019-05-23 09:36:47,387 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:36:47,407 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:36:47,421 INFO L146 ILogger]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 09:36:47,427 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:36:47,782 INFO L146 ILogger]: Checked inductivity of 21 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 09:36:47,782 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:36:47,783 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 09:36:47,786 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 09:36:47,786 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 09:36:47,787 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 09:36:47,787 INFO L146 ILogger]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2019-05-23 09:36:47,968 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:36:47,969 INFO L146 ILogger]: Finished difference Result 20 states and 20 transitions. [2019-05-23 09:36:47,969 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 09:36:47,969 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 20 [2019-05-23 09:36:47,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:36:47,970 INFO L146 ILogger]: With dead ends: 20 [2019-05-23 09:36:47,970 INFO L146 ILogger]: Without dead ends: 0 [2019-05-23 09:36:47,971 INFO L146 ILogger]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 09:36:47,971 INFO L146 ILogger]: Start minimizeSevpa. Operand 0 states. [2019-05-23 09:36:47,971 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-05-23 09:36:47,972 INFO L146 ILogger]: Start removeUnreachable. Operand 0 states. [2019-05-23 09:36:47,972 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-05-23 09:36:47,972 INFO L146 ILogger]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-05-23 09:36:47,972 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:36:47,973 INFO L146 ILogger]: Abstraction has 0 states and 0 transitions. [2019-05-23 09:36:47,973 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 09:36:47,973 INFO L146 ILogger]: Start isEmpty. Operand 0 states and 0 transitions. [2019-05-23 09:36:47,973 INFO L146 ILogger]: Finished isEmpty. No accepting run. [2019-05-23 09:36:47,976 INFO L146 ILogger]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-05-23 09:36:47,978 INFO L146 ILogger]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:36:47 BasicIcfg [2019-05-23 09:36:47,979 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 09:36:47,981 INFO L146 ILogger]: Toolchain (without parser) took 1988.71 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 110.8 MB in the beginning and 129.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,983 INFO L146 ILogger]: Boogie PL CUP Parser took 0.33 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,984 INFO L146 ILogger]: Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 133.2 MB. Free memory was 110.8 MB in the beginning and 108.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,985 INFO L146 ILogger]: Boogie Preprocessor took 24.33 ms. Allocated memory is still 133.2 MB. Free memory was 108.8 MB in the beginning and 107.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,986 INFO L146 ILogger]: RCFGBuilder took 305.97 ms. Allocated memory is still 133.2 MB. Free memory was 107.8 MB in the beginning and 99.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,987 INFO L146 ILogger]: IcfgTransformer took 59.61 ms. Allocated memory is still 133.2 MB. Free memory was 99.5 MB in the beginning and 96.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,988 INFO L146 ILogger]: TraceAbstraction took 1551.98 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 96.3 MB in the beginning and 129.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-05-23 09:36:47,993 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 0.33 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 133.2 MB. Free memory was 110.8 MB in the beginning and 108.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.33 ms. Allocated memory is still 133.2 MB. Free memory was 108.8 MB in the beginning and 107.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.97 ms. Allocated memory is still 133.2 MB. Free memory was 107.8 MB in the beginning and 99.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. * IcfgTransformer took 59.61 ms. Allocated memory is still 133.2 MB. Free memory was 99.5 MB in the beginning and 96.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1551.98 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 96.3 MB in the beginning and 129.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 9 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 44 SDslu, 21 SDs, 0 SdLazy, 54 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, 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, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3165 SizeOfPredicates, 4 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 10/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...