java -Xss1g -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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:31:09,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:31:09,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:31:09,379 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:31:09,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:31:09,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:31:09,382 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:31:09,383 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:31:09,385 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:31:09,385 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:31:09,387 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:31:09,387 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:31:09,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:31:09,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:31:09,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:31:09,392 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:31:09,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:31:09,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:31:09,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:31:09,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:31:09,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:31:09,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:31:09,403 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:31:09,403 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:31:09,404 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:31:09,405 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:31:09,406 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:31:09,406 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:31:09,407 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:31:09,408 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:31:09,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:31:09,409 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:31:09,409 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:31:09,410 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:31:09,411 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:31:09,411 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 20:31:09,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:31:09,423 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:31:09,424 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:31:09,424 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:31:09,425 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:31:09,425 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:31:09,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:31:09,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:31:09,426 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:31:09,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:31:09,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:31:09,426 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:31:09,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:31:09,428 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:31:09,429 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:31:09,429 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:31:09,475 INFO ]: Repository-Root is: /tmp [2018-06-22 20:31:09,490 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:31:09,495 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:31:09,497 INFO ]: Initializing SmtParser... [2018-06-22 20:31:09,497 INFO ]: SmtParser initialized [2018-06-22 20:31:09,498 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_2.smt2 [2018-06-22 20:31:09,499 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 [2018-06-22 20:31:09,590 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_2.smt2 unknown [2018-06-22 20:31:10,174 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_2.smt2 [2018-06-22 20:31:10,178 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:31:10,184 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:31:10,184 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:31:10,184 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:31:10,184 INFO ]: ChcToBoogie initialized [2018-06-22 20:31:10,187 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,241 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10 Unit [2018-06-22 20:31:10,241 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:31:10,242 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:31:10,242 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:31:10,242 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:31:10,263 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,263 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,275 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,276 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,285 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,286 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,290 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (1/1) ... [2018-06-22 20:31:10,294 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:31:10,295 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:31:10,295 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:31:10,295 INFO ]: RCFGBuilder initialized [2018-06-22 20:31:10,296 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (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) [2018-06-22 20:31:10,305 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:31:10,305 INFO ]: Found specification of procedure False [2018-06-22 20:31:10,305 INFO ]: Found implementation of procedure False [2018-06-22 20:31:10,305 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:31:10,305 INFO ]: Found specification of procedure state [2018-06-22 20:31:10,305 INFO ]: Found implementation of procedure state [2018-06-22 20:31:10,305 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:31:10,305 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:31:10,305 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 [2018-06-22 20:31:10,704 INFO ]: Using library mode [2018-06-22 20:31:10,704 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:31:10 BoogieIcfgContainer [2018-06-22 20:31:10,704 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:31:10,710 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:31:10,710 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:31:10,716 INFO ]: TraceAbstraction initialized [2018-06-22 20:31:10,716 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:31:10" (1/3) ... [2018-06-22 20:31:10,717 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:31:10, skipping insertion in model container [2018-06-22 20:31:10,717 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:31:10" (2/3) ... [2018-06-22 20:31:10,717 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:31:10, skipping insertion in model container [2018-06-22 20:31:10,717 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:31:10" (3/3) ... [2018-06-22 20:31:10,719 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:31:10,729 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:31:10,742 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:31:10,782 INFO ]: Using default assertion order modulation [2018-06-22 20:31:10,783 INFO ]: Interprodecural is true [2018-06-22 20:31:10,783 INFO ]: Hoare is false [2018-06-22 20:31:10,783 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:31:10,783 INFO ]: Backedges is TWOTRACK [2018-06-22 20:31:10,783 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:31:10,783 INFO ]: Difference is false [2018-06-22 20:31:10,783 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:31:10,783 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:31:10,796 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:31:10,807 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:31:10,807 INFO ]: Found error trace [2018-06-22 20:31:10,807 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:31:10,808 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:31:10,815 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:31:10,817 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:31:10,817 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:31:10,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:10,849 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:31:10,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:10,970 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:31:11,246 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:31:11,248 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:31:11,248 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:31:11,250 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:31:11,265 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:31:11,266 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:31:11,268 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:31:11,404 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:31:11,404 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:31:11,405 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:31:11,406 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:31:11,406 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:31:11,414 INFO ]: With dead ends: 13 [2018-06-22 20:31:11,414 INFO ]: Without dead ends: 13 [2018-06-22 20:31:11,416 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:31:11,427 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:31:11,447 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:31:11,448 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:31:11,448 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:31:11,449 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:31:11,450 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:31:11,450 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:31:11,450 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:31:11,450 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:31:11,451 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:31:11,451 INFO ]: Found error trace [2018-06-22 20:31:11,451 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:31:11,451 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:31:11,451 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:31:11,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:31:11,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:31:11,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:11,452 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:31:11,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:11,551 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:31:12,731 WARN ]: Spent 852.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 36 [2018-06-22 20:31:12,875 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-06-22 20:31:12,937 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:31:12,938 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:31:12,938 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 [2018-06-22 20:31:12,951 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:31:13,099 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:31:13,113 INFO ]: Computing forward predicates... [2018-06-22 20:31:13,225 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:31:13,775 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:31:14,259 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:31:14,722 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:31:20,054 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 23 [2018-06-22 20:31:20,190 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:31:20,225 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:31:20,225 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:31:20,226 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:31:20,226 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:31:20,226 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:31:20,226 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:31:20,408 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-06-22 20:31:20,662 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 22 [2018-06-22 20:31:20,708 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:31:20,708 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:31:20,712 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:31:20,712 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:31:20,712 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:31:20,713 INFO ]: With dead ends: 15 [2018-06-22 20:31:20,713 INFO ]: Without dead ends: 15 [2018-06-22 20:31:20,714 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:31:20,714 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:31:20,716 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:31:20,716 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:31:20,720 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:31:20,721 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:31:20,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:31:20,721 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:31:20,721 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:31:20,721 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:31:20,721 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:31:20,721 INFO ]: Found error trace [2018-06-22 20:31:20,721 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:31:20,722 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:31:20,722 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:31:20,722 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:31:20,722 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:31:20,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:20,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:31:20,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:31:20,834 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:31:21,347 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-06-22 20:31:21,869 WARN ]: Spent 440.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 78 [2018-06-22 20:31:22,014 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:31:22,014 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:31:22,014 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 [2018-06-22 20:31:22,034 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:31:22,190 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:31:22,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:31:22,197 INFO ]: Computing forward predicates... [2018-06-22 20:31:22,222 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:31:22,225 WARN ]: expecting exponential blowup for input size 16 [2018-06-22 20:31:49,462 WARN ]: Simplifying disjunction of 1408428 conjuctions. This might take some time... Received shutdown request... [2018-06-22 20:32:06,734 INFO ]: Timeout while computing interpolants [2018-06-22 20:32:06,935 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:32:06,935 WARN ]: Verification canceled [2018-06-22 20:32:06,941 WARN ]: Timeout [2018-06-22 20:32:06,941 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:32:06 BoogieIcfgContainer [2018-06-22 20:32:06,941 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:32:06,942 INFO ]: Toolchain (without parser) took 56763.53 ms. Allocated memory was 304.1 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 238.2 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. [2018-06-22 20:32:06,943 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:32:06,944 INFO ]: ChcToBoogie took 57.65 ms. Allocated memory is still 304.1 MB. Free memory was 237.2 MB in the beginning and 234.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:32:06,960 INFO ]: Boogie Preprocessor took 52.23 ms. Allocated memory is still 304.1 MB. Free memory was 234.2 MB in the beginning and 232.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:32:06,961 INFO ]: RCFGBuilder took 409.55 ms. Allocated memory is still 304.1 MB. Free memory was 232.2 MB in the beginning and 201.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 3.6 GB. [2018-06-22 20:32:06,961 INFO ]: TraceAbstraction took 56231.75 ms. Allocated memory was 304.1 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. [2018-06-22 20:32:06,963 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.65 ms. Allocated memory is still 304.1 MB. Free memory was 237.2 MB in the beginning and 234.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.23 ms. Allocated memory is still 304.1 MB. Free memory was 234.2 MB in the beginning and 232.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 409.55 ms. Allocated memory is still 304.1 MB. Free memory was 232.2 MB in the beginning and 201.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56231.75 ms. Allocated memory was 304.1 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 1408428 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 56.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 53 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2280 SizeOfPredicates, 42 NumberOfNonLiveVariables, 617 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-32-06-986.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-32-06-986.csv Completed graceful shutdown