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/durationThm_2_e3_329.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:23:26,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:23:26,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:23:26,489 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:23:26,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:23:26,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:23:26,494 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:23:26,496 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:23:26,497 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:23:26,498 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:23:26,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:23:26,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:23:26,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:23:26,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:23:26,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:23:26,506 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:23:26,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:23:26,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:23:26,511 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:23:26,511 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:23:26,512 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:23:26,515 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:23:26,515 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:23:26,515 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:23:26,516 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:23:26,517 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:23:26,517 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:23:26,518 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:23:26,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:23:26,519 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:23:26,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:23:26,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:23:26,521 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:23:26,522 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:23:26,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:23:26,522 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 17:23:26,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:23:26,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:23:26,540 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:23:26,540 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:23:26,541 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:23:26,541 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:23:26,541 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:23:26,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:23:26,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:23:26,542 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:23:26,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:23:26,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:23:26,543 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:23:26,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:23:26,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:23:26,545 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:23:26,545 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:23:26,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:23:26,545 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:23:26,547 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:23:26,547 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:23:26,597 INFO ]: Repository-Root is: /tmp [2018-06-22 17:23:26,610 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:23:26,615 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:23:26,616 INFO ]: Initializing SmtParser... [2018-06-22 17:23:26,616 INFO ]: SmtParser initialized [2018-06-22 17:23:26,617 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329.smt2 [2018-06-22 17:23:26,618 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 [2018-06-22 17:23:26,709 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329.smt2 unknown [2018-06-22 17:23:26,955 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329.smt2 [2018-06-22 17:23:26,960 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:23:26,965 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:23:26,966 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:23:26,966 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:23:26,966 INFO ]: ChcToBoogie initialized [2018-06-22 17:23:26,969 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:23:26" (1/1) ... [2018-06-22 17:23:27,013 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27 Unit [2018-06-22 17:23:27,015 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:23:27,015 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:23:27,015 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:23:27,015 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:23:27,036 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,036 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,044 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,044 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,048 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,049 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,049 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (1/1) ... [2018-06-22 17:23:27,052 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:23:27,053 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:23:27,053 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:23:27,053 INFO ]: RCFGBuilder initialized [2018-06-22 17:23:27,054 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (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 17:23:27,073 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:23:27,073 INFO ]: Found specification of procedure False [2018-06-22 17:23:27,073 INFO ]: Found implementation of procedure False [2018-06-22 17:23:27,074 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:23:27,074 INFO ]: Found specification of procedure state [2018-06-22 17:23:27,074 INFO ]: Found implementation of procedure state [2018-06-22 17:23:27,074 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:23:27,074 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:23:27,074 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 17:23:27,293 INFO ]: Using library mode [2018-06-22 17:23:27,293 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:23:27 BoogieIcfgContainer [2018-06-22 17:23:27,293 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:23:27,297 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:23:27,297 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:23:27,302 INFO ]: TraceAbstraction initialized [2018-06-22 17:23:27,302 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:23:26" (1/3) ... [2018-06-22 17:23:27,303 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6e4eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:23:27, skipping insertion in model container [2018-06-22 17:23:27,303 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:27" (2/3) ... [2018-06-22 17:23:27,303 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6e4eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:23:27, skipping insertion in model container [2018-06-22 17:23:27,303 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:23:27" (3/3) ... [2018-06-22 17:23:27,305 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:23:27,312 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:23:27,319 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:23:27,357 INFO ]: Using default assertion order modulation [2018-06-22 17:23:27,357 INFO ]: Interprodecural is true [2018-06-22 17:23:27,357 INFO ]: Hoare is false [2018-06-22 17:23:27,357 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:23:27,357 INFO ]: Backedges is TWOTRACK [2018-06-22 17:23:27,357 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:23:27,357 INFO ]: Difference is false [2018-06-22 17:23:27,357 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:23:27,357 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:23:27,372 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:23:27,382 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:23:27,382 INFO ]: Found error trace [2018-06-22 17:23:27,383 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:27,383 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:27,387 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 17:23:27,388 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:27,388 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:27,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:27,423 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:27,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:27,473 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:27,708 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 1 [2018-06-22 17:23:27,710 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:23:27,712 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:23:27,712 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:23:27,713 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:23:27,723 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:23:27,724 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:23:27,725 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:23:27,841 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:23:27,841 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:23:27,843 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:23:27,844 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:23:27,844 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:23:27,855 INFO ]: With dead ends: 13 [2018-06-22 17:23:27,855 INFO ]: Without dead ends: 13 [2018-06-22 17:23:27,856 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 17:23:27,868 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:23:27,889 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:23:27,890 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:23:27,891 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:23:27,892 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:23:27,892 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:23:27,893 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:23:27,893 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:23:27,893 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:23:27,894 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:23:27,894 INFO ]: Found error trace [2018-06-22 17:23:27,894 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:27,894 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:27,894 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 17:23:27,894 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:27,894 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:27,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:27,895 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:27,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:27,930 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:28,164 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:23:28,164 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:23:28,164 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 17:23:28,171 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:28,222 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:28,232 INFO ]: Computing forward predicates... [2018-06-22 17:23:29,141 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:23:29,163 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:23:29,163 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 17:23:29,163 INFO ]: Interpolant automaton has 7 states [2018-06-22 17:23:29,163 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 17:23:29,163 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 17:23:29,164 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 17:23:29,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:23:29,301 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:23:29,302 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:23:29,302 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 17:23:29,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:23:29,302 INFO ]: With dead ends: 15 [2018-06-22 17:23:29,303 INFO ]: Without dead ends: 15 [2018-06-22 17:23:29,303 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 17:23:29,303 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:23:29,307 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:23:29,307 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:23:29,307 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:23:29,307 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:23:29,307 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:23:29,307 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:23:29,307 INFO ]: Interpolant automaton has 7 states. [2018-06-22 17:23:29,307 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:23:29,308 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:23:29,308 INFO ]: Found error trace [2018-06-22 17:23:29,308 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:29,308 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:29,308 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 17:23:29,308 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:29,308 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:29,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:29,309 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:29,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:29,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:29,749 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 17:23:29,749 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:23:29,750 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 17:23:29,760 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:23:29,837 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:23:29,837 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:29,842 INFO ]: Computing forward predicates... [2018-06-22 17:23:30,520 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:23:30,540 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:23:30,540 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-06-22 17:23:30,540 INFO ]: Interpolant automaton has 11 states [2018-06-22 17:23:30,540 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 17:23:30,540 INFO ]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-06-22 17:23:30,541 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 17:23:30,711 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:23:30,711 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 17:23:30,712 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:23:30,712 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 17:23:30,712 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:23:30,712 INFO ]: With dead ends: 11 [2018-06-22 17:23:30,712 INFO ]: Without dead ends: 0 [2018-06-22 17:23:30,712 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-06-22 17:23:30,713 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:23:30,713 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:23:30,713 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:23:30,713 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:23:30,713 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 17:23:30,713 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:23:30,713 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:23:30,713 INFO ]: Interpolant automaton has 11 states. [2018-06-22 17:23:30,713 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:23:30,713 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:23:30,717 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:23:30 BoogieIcfgContainer [2018-06-22 17:23:30,718 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:23:30,718 INFO ]: Toolchain (without parser) took 3758.18 ms. Allocated memory was 308.3 MB in the beginning and 331.9 MB in the end (delta: 23.6 MB). Free memory was 261.8 MB in the beginning and 205.5 MB in the end (delta: 56.3 MB). Peak memory consumption was 79.9 MB. Max. memory is 3.6 GB. [2018-06-22 17:23:30,719 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:23:30,720 INFO ]: ChcToBoogie took 49.32 ms. Allocated memory is still 308.3 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:23:30,725 INFO ]: Boogie Preprocessor took 37.10 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:23:30,726 INFO ]: RCFGBuilder took 240.35 ms. Allocated memory is still 308.3 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:23:30,726 INFO ]: TraceAbstraction took 3420.36 ms. Allocated memory was 308.3 MB in the beginning and 331.9 MB in the end (delta: 23.6 MB). Free memory was 247.8 MB in the beginning and 205.5 MB in the end (delta: 42.3 MB). Peak memory consumption was 65.9 MB. Max. memory is 3.6 GB. [2018-06-22 17:23:30,736 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 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.32 ms. Allocated memory is still 308.3 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.10 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 240.35 ms. Allocated memory is still 308.3 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3420.36 ms. Allocated memory was 308.3 MB in the beginning and 331.9 MB in the end (delta: 23.6 MB). Free memory was 247.8 MB in the beginning and 205.5 MB in the end (delta: 42.3 MB). Peak memory consumption was 65.9 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, 3.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 14 SDslu, 54 SDs, 0 SdLazy, 43 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 2112 SizeOfPredicates, 39 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 10/26 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/durationThm_2_e3_329.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-23-30-747.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_2_e3_329.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-23-30-747.csv Received shutdown request...