java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:19:04,487 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:19:04,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:19:04,500 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:19:04,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:19:04,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:19:04,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:19:04,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:19:04,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:19:04,506 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:19:04,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:19:04,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:19:04,508 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:19:04,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:19:04,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:19:04,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:19:04,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:19:04,514 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:19:04,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:19:04,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:19:04,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:19:04,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:19:04,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:19:04,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:19:04,522 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:19:04,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:19:04,528 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:19:04,529 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:19:04,530 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:19:04,530 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:19:04,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:19:04,531 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:19:04,532 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:19:04,532 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:19:04,533 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:19:04,533 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:19:04,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:19:04,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:19:04,550 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:19:04,550 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:19:04,551 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:19:04,551 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:19:04,551 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:19:04,552 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:19:04,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:19:04,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:19:04,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:19:04,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:19:04,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:19:04,553 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:19:04,553 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:19:04,553 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:19:04,553 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:19:04,560 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:19:04,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:19:04,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:19:04,560 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:19:04,561 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:19:04,562 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:19:04,600 INFO ]: Repository-Root is: /tmp [2018-06-25 09:19:04,611 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:19:04,615 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:19:04,616 INFO ]: Initializing SmtParser... [2018-06-25 09:19:04,616 INFO ]: SmtParser initialized [2018-06-25 09:19:04,617 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-25 09:19:04,618 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2018-06-25 09:19:04,712 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@38ad250a [2018-06-25 09:19:04,888 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-25 09:19:04,892 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:19:04,899 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:19:04,899 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:19:04,899 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:19:04,899 INFO ]: ChcToBoogie initialized [2018-06-25 09:19:04,902 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,955 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04 Unit [2018-06-25 09:19:04,955 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:19:04,955 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:19:04,955 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:19:04,955 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:19:04,977 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,977 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,982 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,982 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,985 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,986 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,987 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... [2018-06-25 09:19:04,988 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:19:04,989 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:19:04,989 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:19:04,989 INFO ]: RCFGBuilder initialized [2018-06-25 09:19:04,992 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 09:19:05,009 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:19:05,009 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:19:05,009 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:19:05,009 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:19:05,009 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:19:05,009 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:19:05,197 INFO ]: Using library mode [2018-06-25 09:19:05,197 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:19:05 BoogieIcfgContainer [2018-06-25 09:19:05,197 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:19:05,198 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:19:05,198 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:19:05,206 INFO ]: TraceAbstraction initialized [2018-06-25 09:19:05,206 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:19:04" (1/3) ... [2018-06-25 09:19:05,207 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3285d05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:19:05, skipping insertion in model container [2018-06-25 09:19:05,207 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:19:04" (2/3) ... [2018-06-25 09:19:05,208 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3285d05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:19:05, skipping insertion in model container [2018-06-25 09:19:05,208 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:19:05" (3/3) ... [2018-06-25 09:19:05,212 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:19:05,221 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:19:05,232 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:19:05,274 INFO ]: Using default assertion order modulation [2018-06-25 09:19:05,274 INFO ]: Interprodecural is true [2018-06-25 09:19:05,274 INFO ]: Hoare is false [2018-06-25 09:19:05,274 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:19:05,274 INFO ]: Backedges is TWOTRACK [2018-06-25 09:19:05,274 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:19:05,274 INFO ]: Difference is false [2018-06-25 09:19:05,274 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:19:05,274 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:19:05,286 INFO ]: Start isEmpty. Operand 13 states. [2018-06-25 09:19:05,296 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:19:05,297 INFO ]: Found error trace [2018-06-25 09:19:05,297 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:19:05,297 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:19:05,301 INFO ]: Analyzing trace with hash 1426497682, now seen corresponding path program 1 times [2018-06-25 09:19:05,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:19:05,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:19:05,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:05,343 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:19:05,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:05,381 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:05,472 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:19:05,474 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:19:05,474 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:19:05,475 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:19:05,486 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:19:05,486 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:19:05,488 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-25 09:19:05,597 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:19:05,597 INFO ]: Finished difference Result 14 states and 16 transitions. [2018-06-25 09:19:05,597 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 09:19:05,598 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:19:05,598 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:19:05,607 INFO ]: With dead ends: 14 [2018-06-25 09:19:05,607 INFO ]: Without dead ends: 14 [2018-06-25 09:19:05,609 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:19:05,629 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 09:19:05,645 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-06-25 09:19:05,646 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 09:19:05,646 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-06-25 09:19:05,648 INFO ]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2018-06-25 09:19:05,648 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:19:05,648 INFO ]: Abstraction has 12 states and 13 transitions. [2018-06-25 09:19:05,648 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:19:05,648 INFO ]: Start isEmpty. Operand 12 states and 13 transitions. [2018-06-25 09:19:05,649 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:19:05,649 INFO ]: Found error trace [2018-06-25 09:19:05,649 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:19:05,649 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:19:05,649 INFO ]: Analyzing trace with hash -1200977079, now seen corresponding path program 1 times [2018-06-25 09:19:05,649 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:19:05,649 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:19:05,650 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:05,650 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:19:05,650 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:05,678 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:05,834 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:19:05,834 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:19:05,834 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:19:05,842 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:19:05,875 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:05,884 INFO ]: Computing forward predicates... [2018-06-25 09:19:06,334 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:19:06,367 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:19:06,367 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-25 09:19:06,368 INFO ]: Interpolant automaton has 12 states [2018-06-25 09:19:06,368 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 09:19:06,368 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-25 09:19:06,368 INFO ]: Start difference. First operand 12 states and 13 transitions. Second operand 12 states. [2018-06-25 09:19:06,593 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-25 09:19:06,872 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:19:06,872 INFO ]: Finished difference Result 26 states and 31 transitions. [2018-06-25 09:19:06,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-25 09:19:06,872 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-25 09:19:06,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:19:06,876 INFO ]: With dead ends: 26 [2018-06-25 09:19:06,876 INFO ]: Without dead ends: 26 [2018-06-25 09:19:06,878 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2018-06-25 09:19:06,878 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-25 09:19:06,881 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 15. [2018-06-25 09:19:06,881 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 09:19:06,882 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-06-25 09:19:06,882 INFO ]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2018-06-25 09:19:06,882 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:19:06,882 INFO ]: Abstraction has 15 states and 17 transitions. [2018-06-25 09:19:06,882 INFO ]: Interpolant automaton has 12 states. [2018-06-25 09:19:06,882 INFO ]: Start isEmpty. Operand 15 states and 17 transitions. [2018-06-25 09:19:06,882 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:19:06,882 INFO ]: Found error trace [2018-06-25 09:19:06,882 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:19:06,882 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:19:06,883 INFO ]: Analyzing trace with hash -1143718777, now seen corresponding path program 1 times [2018-06-25 09:19:06,883 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:19:06,883 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:19:06,884 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:06,884 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:19:06,884 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:06,894 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:07,282 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:19:07,282 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:19:07,282 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:19:07,283 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:19:07,283 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:19:07,283 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:19:07,283 INFO ]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2018-06-25 09:19:07,334 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:19:07,334 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-25 09:19:07,334 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 09:19:07,334 INFO ]: Start accepts. Automaton has 5 states. Word has length 11 [2018-06-25 09:19:07,334 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:19:07,335 INFO ]: With dead ends: 15 [2018-06-25 09:19:07,335 INFO ]: Without dead ends: 15 [2018-06-25 09:19:07,335 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-25 09:19:07,335 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 09:19:07,337 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 09:19:07,337 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 09:19:07,337 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-25 09:19:07,337 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-06-25 09:19:07,338 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:19:07,338 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-25 09:19:07,338 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:19:07,338 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-25 09:19:07,338 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 09:19:07,338 INFO ]: Found error trace [2018-06-25 09:19:07,338 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:19:07,338 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:19:07,338 INFO ]: Analyzing trace with hash -522612430, now seen corresponding path program 2 times [2018-06-25 09:19:07,338 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:19:07,338 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:19:07,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:07,339 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:19:07,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:07,358 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:07,752 INFO ]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:19:07,752 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:19:07,752 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:19:07,761 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:19:07,778 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:19:07,778 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:07,781 INFO ]: Computing forward predicates... [2018-06-25 09:19:07,956 INFO ]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:19:07,975 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:19:07,975 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-06-25 09:19:07,975 INFO ]: Interpolant automaton has 16 states [2018-06-25 09:19:07,975 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-25 09:19:07,976 INFO ]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-06-25 09:19:07,976 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 16 states. [2018-06-25 09:19:08,137 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:19:08,137 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-25 09:19:08,137 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 09:19:08,137 INFO ]: Start accepts. Automaton has 16 states. Word has length 14 [2018-06-25 09:19:08,137 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:19:08,137 INFO ]: With dead ends: 26 [2018-06-25 09:19:08,137 INFO ]: Without dead ends: 26 [2018-06-25 09:19:08,138 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-06-25 09:19:08,138 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-25 09:19:08,142 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 16. [2018-06-25 09:19:08,142 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 09:19:08,142 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-06-25 09:19:08,142 INFO ]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2018-06-25 09:19:08,142 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:19:08,142 INFO ]: Abstraction has 16 states and 18 transitions. [2018-06-25 09:19:08,142 INFO ]: Interpolant automaton has 16 states. [2018-06-25 09:19:08,142 INFO ]: Start isEmpty. Operand 16 states and 18 transitions. [2018-06-25 09:19:08,143 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 09:19:08,143 INFO ]: Found error trace [2018-06-25 09:19:08,143 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:19:08,143 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:19:08,143 INFO ]: Analyzing trace with hash -465354128, now seen corresponding path program 1 times [2018-06-25 09:19:08,143 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:19:08,143 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:19:08,144 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:08,144 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:19:08,144 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:19:08,155 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:19:08,207 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:19:08,207 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:19:08,207 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-25 09:19:08,207 INFO ]: Interpolant automaton has 6 states [2018-06-25 09:19:08,207 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 09:19:08,207 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:19:08,207 INFO ]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-06-25 09:19:08,266 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:19:08,266 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 09:19:08,266 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 09:19:08,266 INFO ]: Start accepts. Automaton has 6 states. Word has length 14 [2018-06-25 09:19:08,266 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:19:08,266 INFO ]: With dead ends: 9 [2018-06-25 09:19:08,266 INFO ]: Without dead ends: 0 [2018-06-25 09:19:08,267 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-25 09:19:08,267 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:19:08,267 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:19:08,267 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:19:08,267 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:19:08,267 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-25 09:19:08,267 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:19:08,267 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:19:08,267 INFO ]: Interpolant automaton has 6 states. [2018-06-25 09:19:08,267 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:19:08,267 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:19:08,271 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:19:08 BoogieIcfgContainer [2018-06-25 09:19:08,271 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:19:08,272 INFO ]: Toolchain (without parser) took 3378.93 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 259.5 MB in the beginning and 196.3 MB in the end (delta: 63.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 3.6 GB. [2018-06-25 09:19:08,273 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:19:08,273 INFO ]: ChcToBoogie took 55.85 ms. Allocated memory is still 303.0 MB. Free memory was 259.5 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:19:08,274 INFO ]: Boogie Preprocessor took 33.26 ms. Allocated memory is still 303.0 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:19:08,274 INFO ]: RCFGBuilder took 208.16 ms. Allocated memory is still 303.0 MB. Free memory was 255.6 MB in the beginning and 248.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:19:08,275 INFO ]: TraceAbstraction took 3072.79 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 247.6 MB in the beginning and 196.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 72.3 MB. Max. memory is 3.6 GB. [2018-06-25 09:19:08,278 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.85 ms. Allocated memory is still 303.0 MB. Free memory was 259.5 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.26 ms. Allocated memory is still 303.0 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 208.16 ms. Allocated memory is still 303.0 MB. Free memory was 255.6 MB in the beginning and 248.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3072.79 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 247.6 MB in the beginning and 196.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 72.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : 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 2 procedures, 13 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 118 SDslu, 158 SDs, 0 SdLazy, 81 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 3901 SizeOfPredicates, 22 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-19-08-289.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-19-08-289.csv Received shutdown request...