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/speed2_e7_223_e7_213.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:53:26,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:53:26,484 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:53:26,497 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:53:26,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:53:26,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:53:26,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:53:26,503 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:53:26,504 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:53:26,506 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:53:26,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:53:26,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:53:26,508 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:53:26,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:53:26,509 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:53:26,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:53:26,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:53:26,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:53:26,530 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:53:26,531 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:53:26,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:53:26,534 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:53:26,534 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:53:26,534 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:53:26,535 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:53:26,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:53:26,536 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:53:26,542 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:53:26,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:53:26,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:53:26,543 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:53:26,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:53:26,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:53:26,549 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:53:26,549 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:53:26,549 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 19:53:26,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:53:26,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:53:26,570 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:53:26,571 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:53:26,573 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:53:26,573 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:53:26,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:53:26,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:53:26,574 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:53:26,574 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:53:26,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:53:26,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:53:26,575 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:53:26,575 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:53:26,575 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:53:26,575 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:53:26,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:53:26,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:53:26,577 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:53:26,578 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:53:26,578 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:53:26,627 INFO ]: Repository-Root is: /tmp [2018-06-22 19:53:26,643 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:53:26,647 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:53:26,648 INFO ]: Initializing SmtParser... [2018-06-22 19:53:26,649 INFO ]: SmtParser initialized [2018-06-22 19:53:26,649 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e7_223_e7_213.smt2 [2018-06-22 19:53:26,651 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 19:53:26,743 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e7_223_e7_213.smt2 unknown [2018-06-22 19:53:27,086 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e7_223_e7_213.smt2 [2018-06-22 19:53:27,091 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:53:27,105 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:53:27,106 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:53:27,106 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:53:27,106 INFO ]: ChcToBoogie initialized [2018-06-22 19:53:27,109 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,165 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27 Unit [2018-06-22 19:53:27,166 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:53:27,166 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:53:27,166 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:53:27,166 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:53:27,188 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,188 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,197 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,197 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,201 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,202 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,203 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (1/1) ... [2018-06-22 19:53:27,217 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:53:27,218 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:53:27,218 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:53:27,218 INFO ]: RCFGBuilder initialized [2018-06-22 19:53:27,219 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (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 19:53:27,235 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:53:27,235 INFO ]: Found specification of procedure False [2018-06-22 19:53:27,236 INFO ]: Found implementation of procedure False [2018-06-22 19:53:27,236 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:53:27,236 INFO ]: Found specification of procedure state [2018-06-22 19:53:27,236 INFO ]: Found implementation of procedure state [2018-06-22 19:53:27,236 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:53:27,236 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:53:27,236 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 19:53:27,509 INFO ]: Using library mode [2018-06-22 19:53:27,510 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:53:27 BoogieIcfgContainer [2018-06-22 19:53:27,510 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:53:27,512 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:53:27,512 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:53:27,518 INFO ]: TraceAbstraction initialized [2018-06-22 19:53:27,518 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:53:27" (1/3) ... [2018-06-22 19:53:27,519 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe039f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:53:27, skipping insertion in model container [2018-06-22 19:53:27,519 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:53:27" (2/3) ... [2018-06-22 19:53:27,520 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe039f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:53:27, skipping insertion in model container [2018-06-22 19:53:27,520 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:53:27" (3/3) ... [2018-06-22 19:53:27,521 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:53:27,529 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:53:27,539 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:53:27,576 INFO ]: Using default assertion order modulation [2018-06-22 19:53:27,577 INFO ]: Interprodecural is true [2018-06-22 19:53:27,577 INFO ]: Hoare is false [2018-06-22 19:53:27,577 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:53:27,577 INFO ]: Backedges is TWOTRACK [2018-06-22 19:53:27,577 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:53:27,577 INFO ]: Difference is false [2018-06-22 19:53:27,577 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:53:27,577 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:53:27,591 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:53:27,600 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:53:27,600 INFO ]: Found error trace [2018-06-22 19:53:27,600 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:53:27,601 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:53:27,604 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:53:27,605 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:53:27,606 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:53:27,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:27,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:53:27,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:27,705 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:27,826 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:53:27,828 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:53:27,829 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:53:27,830 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:53:27,847 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:53:27,847 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:53:27,849 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:53:27,936 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:53:27,936 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:53:27,937 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:53:27,938 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:53:27,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:53:27,951 INFO ]: With dead ends: 13 [2018-06-22 19:53:27,951 INFO ]: Without dead ends: 13 [2018-06-22 19:53:27,953 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:53:27,966 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:53:27,987 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:53:27,988 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:53:27,989 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:53:27,990 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:53:27,990 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:53:27,990 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:53:27,990 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:53:27,990 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:53:27,992 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:53:27,992 INFO ]: Found error trace [2018-06-22 19:53:27,992 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:53:27,992 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:53:27,992 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:53:27,992 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:53:27,992 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:53:27,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:27,995 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:53:27,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:28,053 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:28,279 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:53:28,279 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:53:28,279 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 19:53:28,286 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:53:28,355 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:28,362 INFO ]: Computing forward predicates... [2018-06-22 19:53:28,635 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:53:28,656 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:53:28,656 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:53:28,657 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:53:28,657 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:53:28,657 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:53:28,657 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:53:28,966 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 19:53:29,002 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:53:29,002 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:53:29,004 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:53:29,004 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:53:29,004 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:53:29,005 INFO ]: With dead ends: 15 [2018-06-22 19:53:29,005 INFO ]: Without dead ends: 15 [2018-06-22 19:53:29,006 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:53:29,006 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:53:29,008 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:53:29,008 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:53:29,011 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:53:29,011 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:53:29,011 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:53:29,011 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:53:29,011 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:53:29,011 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:53:29,012 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:53:29,012 INFO ]: Found error trace [2018-06-22 19:53:29,012 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:53:29,012 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:53:29,012 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:53:29,012 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:53:29,012 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:53:29,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:29,013 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:53:29,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:29,115 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:29,892 WARN ]: Spent 566.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2018-06-22 19:53:30,148 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:53:30,148 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:53:30,148 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 19:53:30,158 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:53:30,207 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:53:30,207 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:30,211 INFO ]: Computing forward predicates... [2018-06-22 19:53:30,887 WARN ]: Spent 343.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2018-06-22 19:53:31,452 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-06-22 19:53:31,522 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:53:31,554 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:53:31,554 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:53:31,554 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:53:31,555 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:53:31,555 INFO ]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:53:31,555 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:53:31,940 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2018-06-22 19:53:32,183 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2018-06-22 19:53:32,417 WARN ]: Spent 206.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-06-22 19:53:32,447 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:53:32,447 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:53:32,449 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:53:32,449 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:53:32,449 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:53:32,449 INFO ]: With dead ends: 17 [2018-06-22 19:53:32,450 INFO ]: Without dead ends: 17 [2018-06-22 19:53:32,450 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:53:32,450 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:53:32,453 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:53:32,453 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:53:32,454 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:53:32,454 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:53:32,454 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:53:32,454 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:53:32,454 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:53:32,454 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:53:32,455 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:53:32,455 INFO ]: Found error trace [2018-06-22 19:53:32,455 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:53:32,455 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:53:32,455 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:53:32,455 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:53:32,455 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:53:32,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:32,456 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:53:32,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:53:32,485 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:32,912 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 3 [2018-06-22 19:53:32,913 INFO ]: Checked inductivity of 21 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 19:53:32,913 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:53:32,913 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:53:32,926 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:53:33,011 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:53:33,011 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:53:33,015 INFO ]: Computing forward predicates... [2018-06-22 19:53:33,220 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:53:33,239 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:53:33,261 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:53:33,283 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:53:33,859 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2018-06-22 19:53:34,019 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-06-22 19:53:34,228 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:53:34,247 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:53:34,247 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 13 [2018-06-22 19:53:34,248 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:53:34,248 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:53:34,248 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:53:34,248 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 13 states. [2018-06-22 19:53:34,577 WARN ]: Spent 248.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-06-22 19:53:34,698 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2018-06-22 19:53:34,718 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:53:34,718 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:53:34,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:53:34,718 INFO ]: Start accepts. Automaton has 13 states. Word has length 21 [2018-06-22 19:53:34,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:53:34,718 INFO ]: With dead ends: 13 [2018-06-22 19:53:34,718 INFO ]: Without dead ends: 0 [2018-06-22 19:53:34,719 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:53:34,719 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:53:34,719 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:53:34,719 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:53:34,719 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:53:34,719 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:53:34,719 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:53:34,719 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:53:34,719 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:53:34,719 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:53:34,719 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:53:34,724 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:53:34 BoogieIcfgContainer [2018-06-22 19:53:34,724 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:53:34,725 INFO ]: Toolchain (without parser) took 7633.81 ms. Allocated memory was 308.8 MB in the beginning and 419.4 MB in the end (delta: 110.6 MB). Free memory was 261.3 MB in the beginning and 273.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 98.9 MB. Max. memory is 3.6 GB. [2018-06-22 19:53:34,726 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:53:34,726 INFO ]: ChcToBoogie took 60.27 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:53:34,726 INFO ]: Boogie Preprocessor took 51.08 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 257.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:53:34,727 INFO ]: RCFGBuilder took 292.75 ms. Allocated memory is still 308.8 MB. Free memory was 257.3 MB in the beginning and 246.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:53:34,727 INFO ]: TraceAbstraction took 7212.28 ms. Allocated memory was 308.8 MB in the beginning and 419.4 MB in the end (delta: 110.6 MB). Free memory was 246.3 MB in the beginning and 273.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 3.6 GB. [2018-06-22 19:53:34,730 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 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.27 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.08 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 257.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 292.75 ms. Allocated memory is still 308.8 MB. Free memory was 257.3 MB in the beginning and 246.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7212.28 ms. Allocated memory was 308.8 MB in the beginning and 419.4 MB in the end (delta: 110.6 MB). Free memory was 246.3 MB in the beginning and 273.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 83.8 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 7.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 28 SDslu, 122 SDs, 0 SdLazy, 102 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 14060 SizeOfPredicates, 74 NumberOfNonLiveVariables, 717 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 30/68 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/speed2_e7_223_e7_213.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-53-34-739.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2_e7_223_e7_213.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-53-34-739.csv Received shutdown request...