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/cav12/kundu-bug-2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:04:54,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:04:54,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:04:54,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:04:54,451 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:04:54,452 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:04:54,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:04:54,460 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:04:54,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:04:54,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:04:54,466 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:04:54,466 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:04:54,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:04:54,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:04:54,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:04:54,469 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:04:54,473 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:04:54,483 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:04:54,484 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:04:54,485 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:04:54,486 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:04:54,488 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:04:54,488 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:04:54,489 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:04:54,494 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:04:54,495 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:04:54,496 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:04:54,496 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:04:54,497 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:04:54,497 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:04:54,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:04:54,501 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:04:54,501 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:04:54,502 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:04:54,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:04:54,503 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 14:04:54,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:04:54,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:04:54,522 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:04:54,523 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:04:54,523 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:04:54,524 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:04:54,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:04:54,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:04:54,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:04:54,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:04:54,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:04:54,526 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:04:54,526 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:04:54,526 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:04:54,526 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:04:54,526 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:04:54,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:04:54,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:04:54,527 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:04:54,528 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:04:54,528 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:04:54,577 INFO ]: Repository-Root is: /tmp [2018-06-22 14:04:54,593 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:04:54,597 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:04:54,598 INFO ]: Initializing SmtParser... [2018-06-22 14:04:54,599 INFO ]: SmtParser initialized [2018-06-22 14:04:54,600 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/kundu-bug-2.smt2 [2018-06-22 14:04:54,601 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 14:04:54,687 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/kundu-bug-2.smt2 unknown [2018-06-22 14:04:55,302 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/kundu-bug-2.smt2 [2018-06-22 14:04:55,307 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:04:55,312 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:04:55,313 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:04:55,313 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:04:55,313 INFO ]: ChcToBoogie initialized [2018-06-22 14:04:55,316 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,408 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55 Unit [2018-06-22 14:04:55,408 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:04:55,409 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:04:55,409 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:04:55,409 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:04:55,431 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,431 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,455 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,456 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,486 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,487 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,493 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (1/1) ... [2018-06-22 14:04:55,499 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:04:55,500 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:04:55,500 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:04:55,500 INFO ]: RCFGBuilder initialized [2018-06-22 14:04:55,501 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (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 14:04:55,515 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:04:55,515 INFO ]: Found specification of procedure False [2018-06-22 14:04:55,515 INFO ]: Found implementation of procedure False [2018-06-22 14:04:55,515 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:04:55,515 INFO ]: Found specification of procedure state [2018-06-22 14:04:55,515 INFO ]: Found implementation of procedure state [2018-06-22 14:04:55,515 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:04:55,515 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:04:55,515 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 14:04:56,004 INFO ]: Using library mode [2018-06-22 14:04:56,005 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:04:56 BoogieIcfgContainer [2018-06-22 14:04:56,005 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:04:56,006 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:04:56,006 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:04:56,009 INFO ]: TraceAbstraction initialized [2018-06-22 14:04:56,009 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:04:55" (1/3) ... [2018-06-22 14:04:56,010 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f7a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:04:56, skipping insertion in model container [2018-06-22 14:04:56,010 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:04:55" (2/3) ... [2018-06-22 14:04:56,010 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f7a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:04:56, skipping insertion in model container [2018-06-22 14:04:56,010 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:04:56" (3/3) ... [2018-06-22 14:04:56,015 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:04:56,024 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:04:56,034 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:04:56,088 INFO ]: Using default assertion order modulation [2018-06-22 14:04:56,089 INFO ]: Interprodecural is true [2018-06-22 14:04:56,089 INFO ]: Hoare is false [2018-06-22 14:04:56,089 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:04:56,089 INFO ]: Backedges is TWOTRACK [2018-06-22 14:04:56,089 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:04:56,089 INFO ]: Difference is false [2018-06-22 14:04:56,089 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:04:56,089 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:04:56,111 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:04:56,127 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:04:56,127 INFO ]: Found error trace [2018-06-22 14:04:56,128 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:04:56,128 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:04:56,133 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:04:56,135 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:04:56,136 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:04:56,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:04:56,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:04:56,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:04:56,239 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:04:56,438 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:04:56,440 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:04:56,441 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:04:56,442 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:04:56,455 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:04:56,456 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:04:56,457 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:04:56,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:04:56,622 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:04:56,623 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:04:56,625 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:04:56,625 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:04:56,639 INFO ]: With dead ends: 13 [2018-06-22 14:04:56,639 INFO ]: Without dead ends: 13 [2018-06-22 14:04:56,641 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 14:04:56,660 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:04:56,694 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:04:56,696 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:04:56,696 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:04:56,697 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:04:56,698 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:04:56,698 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:04:56,698 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:04:56,698 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:04:56,699 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:04:56,699 INFO ]: Found error trace [2018-06-22 14:04:56,699 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:04:56,699 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:04:56,699 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:04:56,700 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:04:56,700 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:04:56,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:04:56,700 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:04:56,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:04:56,867 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:04:57,386 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:04:57,387 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:04:57,387 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 14:04:57,395 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:04:57,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:04:57,513 INFO ]: Computing forward predicates... [2018-06-22 14:04:59,254 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2018-06-22 14:04:59,393 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:04:59,416 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:04:59,416 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:04:59,416 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:04:59,417 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:04:59,417 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:04:59,417 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:04:59,826 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2018-06-22 14:04:59,974 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2018-06-22 14:04:59,999 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:04:59,999 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:05:00,000 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:05:00,000 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:05:00,000 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:05:00,001 INFO ]: With dead ends: 15 [2018-06-22 14:05:00,001 INFO ]: Without dead ends: 15 [2018-06-22 14:05:00,002 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:05:00,002 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:05:00,004 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:05:00,005 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:05:00,005 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:05:00,005 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:05:00,005 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:05:00,005 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:05:00,005 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:05:00,005 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:05:00,006 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:05:00,006 INFO ]: Found error trace [2018-06-22 14:05:00,006 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:05:00,006 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:05:00,006 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:05:00,006 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:05:00,006 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:05:00,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:00,007 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:05:00,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:00,156 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:00,496 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:05:00,496 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:05:00,496 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 14:05:00,504 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:05:00,644 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:05:00,644 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:00,655 INFO ]: Computing forward predicates... [2018-06-22 14:05:01,106 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-06-22 14:05:01,661 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2018-06-22 14:05:01,771 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:05:01,804 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:05:01,804 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 14:05:01,805 INFO ]: Interpolant automaton has 14 states [2018-06-22 14:05:01,805 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 14:05:01,805 INFO ]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:05:01,805 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-06-22 14:05:02,244 WARN ]: Spent 394.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-06-22 14:05:02,400 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 22 [2018-06-22 14:05:02,622 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-06-22 14:05:02,654 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:05:02,654 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:05:02,654 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:05:02,654 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 14:05:02,654 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:05:02,655 INFO ]: With dead ends: 17 [2018-06-22 14:05:02,655 INFO ]: Without dead ends: 17 [2018-06-22 14:05:02,655 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:05:02,655 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:05:02,658 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:05:02,658 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:05:02,658 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:05:02,658 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:05:02,658 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:05:02,658 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:05:02,659 INFO ]: Interpolant automaton has 14 states. [2018-06-22 14:05:02,659 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:05:02,659 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:05:02,659 INFO ]: Found error trace [2018-06-22 14:05:02,659 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:05:02,659 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:05:02,659 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:05:02,659 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:05:02,659 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:05:02,660 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:02,660 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:05:02,660 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:02,796 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:03,186 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:05:03,474 WARN ]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:05:03,562 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:05:03,562 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:05:03,562 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 14:05:03,570 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:05:03,747 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:05:03,748 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:03,762 INFO ]: Computing forward predicates... [2018-06-22 14:05:04,234 WARN ]: Spent 283.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-06-22 14:05:04,507 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-06-22 14:05:05,304 WARN ]: Spent 637.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2018-06-22 14:05:06,337 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 11 [2018-06-22 14:05:06,340 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:05:06,362 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:05:06,362 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-22 14:05:06,362 INFO ]: Interpolant automaton has 18 states [2018-06-22 14:05:06,363 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 14:05:06,363 INFO ]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:05:06,363 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2018-06-22 14:05:07,127 WARN ]: Spent 717.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-06-22 14:05:07,809 WARN ]: Spent 356.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2018-06-22 14:05:07,846 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:05:07,847 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:05:07,847 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:05:07,847 INFO ]: Start accepts. Automaton has 18 states. Word has length 21 [2018-06-22 14:05:07,847 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:05:07,848 INFO ]: With dead ends: 19 [2018-06-22 14:05:07,848 INFO ]: Without dead ends: 19 [2018-06-22 14:05:07,848 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-06-22 14:05:07,848 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:05:07,851 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:05:07,851 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:05:07,852 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:05:07,852 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:05:07,852 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:05:07,852 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:05:07,852 INFO ]: Interpolant automaton has 18 states. [2018-06-22 14:05:07,852 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:05:07,853 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:05:07,853 INFO ]: Found error trace [2018-06-22 14:05:07,853 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:05:07,853 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:05:07,854 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 14:05:07,854 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:05:07,854 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:05:07,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:07,854 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:05:07,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:08,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:08,461 WARN ]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:05:08,798 WARN ]: Spent 291.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 19 [2018-06-22 14:05:08,914 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:05:08,915 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:05:08,915 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:05:08,921 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:05:12,828 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:05:12,828 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:12,844 INFO ]: Computing forward predicates... [2018-06-22 14:05:13,886 WARN ]: Spent 732.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-06-22 14:05:15,486 WARN ]: Spent 1.21 s on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-06-22 14:05:16,146 WARN ]: Spent 486.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-06-22 14:05:16,802 WARN ]: Spent 463.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2018-06-22 14:05:17,038 INFO ]: Checked inductivity of 36 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:05:17,059 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:05:17,060 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 14:05:17,060 INFO ]: Interpolant automaton has 21 states [2018-06-22 14:05:17,060 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 14:05:17,060 INFO ]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:05:17,060 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 14:05:17,544 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2018-06-22 14:05:17,889 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-06-22 14:05:17,913 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:05:17,913 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:05:17,916 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:05:17,916 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 14:05:17,916 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:05:17,917 INFO ]: With dead ends: 21 [2018-06-22 14:05:17,917 INFO ]: Without dead ends: 21 [2018-06-22 14:05:17,917 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:05:17,917 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:05:17,920 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:05:17,920 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:05:17,921 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:05:17,921 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:05:17,921 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:05:17,921 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:05:17,921 INFO ]: Interpolant automaton has 21 states. [2018-06-22 14:05:17,921 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:05:17,922 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:05:17,922 INFO ]: Found error trace [2018-06-22 14:05:17,922 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:05:17,922 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:05:17,922 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 14:05:17,923 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:05:17,923 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:05:17,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:17,923 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:05:17,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:05:18,205 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:18,763 WARN ]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:05:19,487 WARN ]: Spent 677.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-06-22 14:05:19,744 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-06-22 14:05:20,029 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-06-22 14:05:20,370 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-06-22 14:05:20,621 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:05:20,622 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:05:20,622 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:05:20,631 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:05:21,122 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:05:21,122 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:05:21,162 INFO ]: Computing forward predicates... [2018-06-22 14:05:21,856 WARN ]: Spent 557.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2018-06-22 14:05:22,604 WARN ]: Spent 609.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-06-22 14:05:35,003 WARN ]: Simplifying disjunction of 7560 conjuctions. This might take some time... [2018-06-22 14:05:42,605 INFO ]: Simplified to disjunction of 7560 conjuctions. [2018-06-22 14:05:59,435 WARN ]: Simplifying disjunction of 6174 conjuctions. This might take some time... [2018-06-22 14:06:02,052 INFO ]: Simplified to disjunction of 6174 conjuctions. [2018-06-22 14:06:02,097 WARN ]: Simplifying disjunction of 6174 conjuctions. This might take some time... Received shutdown request... [2018-06-22 14:06:02,743 INFO ]: Timeout while computing interpolants [2018-06-22 14:06:02,943 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:06:02,944 WARN ]: Verification canceled [2018-06-22 14:06:02,947 WARN ]: Timeout [2018-06-22 14:06:02,947 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:06:02 BoogieIcfgContainer [2018-06-22 14:06:02,947 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:06:02,948 INFO ]: Toolchain (without parser) took 67640.89 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.3 MB in the beginning and 1.1 GB in the end (delta: -871.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:06:02,949 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:06:02,949 INFO ]: ChcToBoogie took 95.55 ms. Allocated memory is still 306.7 MB. Free memory was 209.3 MB in the beginning and 205.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:06:02,949 INFO ]: Boogie Preprocessor took 90.67 ms. Allocated memory is still 306.7 MB. Free memory was 205.3 MB in the beginning and 201.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:06:02,949 INFO ]: RCFGBuilder took 504.85 ms. Allocated memory was 306.7 MB in the beginning and 323.5 MB in the end (delta: 16.8 MB). Free memory was 201.3 MB in the beginning and 253.3 MB in the end (delta: -52.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 3.6 GB. [2018-06-22 14:06:02,950 INFO ]: TraceAbstraction took 66941.18 ms. Allocated memory was 323.5 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 251.1 MB in the beginning and 1.1 GB in the end (delta: -830.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:06:02,952 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 95.55 ms. Allocated memory is still 306.7 MB. Free memory was 209.3 MB in the beginning and 205.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 90.67 ms. Allocated memory is still 306.7 MB. Free memory was 205.3 MB in the beginning and 201.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 504.85 ms. Allocated memory was 306.7 MB in the beginning and 323.5 MB in the end (delta: 16.8 MB). Free memory was 201.3 MB in the beginning and 253.3 MB in the end (delta: -52.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66941.18 ms. Allocated memory was 323.5 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 251.1 MB in the beginning and 1.1 GB in the end (delta: -830.1 MB). Peak memory consumption was 1.3 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 30 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 6174 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 66.8s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 55 SDslu, 224 SDs, 0 SdLazy, 184 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 58820 SizeOfPredicates, 1569 NumberOfNonLiveVariables, 2112 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 41/140 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/kundu-bug-2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-06-02-961.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/kundu-bug-2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-06-02-961.csv Completed graceful shutdown