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/PRODUCER_CONSUMER_vt_e2_1352.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:39:18,411 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:39:18,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:39:18,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:39:18,424 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:39:18,425 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:39:18,426 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:39:18,428 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:39:18,429 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:39:18,431 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:39:18,432 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:39:18,432 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:39:18,433 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:39:18,434 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:39:18,434 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:39:18,435 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:39:18,440 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:39:18,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:39:18,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:39:18,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:39:18,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:39:18,457 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:39:18,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:39:18,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:39:18,458 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:39:18,459 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:39:18,460 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:39:18,460 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:39:18,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:39:18,462 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:39:18,468 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:39:18,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:39:18,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:39:18,470 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:39:18,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:39:18,470 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 19:39:18,496 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:39:18,496 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:39:18,496 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:39:18,496 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:39:18,497 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:39:18,497 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:39:18,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:39:18,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:39:18,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:39:18,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:39:18,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:39:18,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:39:18,501 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:39:18,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:39:18,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:39:18,501 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:39:18,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:39:18,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:39:18,502 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:39:18,503 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:39:18,504 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:39:18,545 INFO ]: Repository-Root is: /tmp [2018-06-22 19:39:18,563 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:39:18,568 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:39:18,569 INFO ]: Initializing SmtParser... [2018-06-22 19:39:18,570 INFO ]: SmtParser initialized [2018-06-22 19:39:18,571 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 [2018-06-22 19:39:18,572 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 19:39:18,661 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 unknown [2018-06-22 19:39:19,029 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 [2018-06-22 19:39:19,034 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:39:19,039 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:39:19,039 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:39:19,039 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:39:19,040 INFO ]: ChcToBoogie initialized [2018-06-22 19:39:19,043 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,083 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19 Unit [2018-06-22 19:39:19,083 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:39:19,083 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:39:19,083 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:39:19,083 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:39:19,104 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,104 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,114 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,114 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,130 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,131 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,132 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (1/1) ... [2018-06-22 19:39:19,144 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:39:19,144 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:39:19,144 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:39:19,144 INFO ]: RCFGBuilder initialized [2018-06-22 19:39:19,145 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (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 19:39:19,161 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:39:19,161 INFO ]: Found specification of procedure False [2018-06-22 19:39:19,161 INFO ]: Found implementation of procedure False [2018-06-22 19:39:19,161 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:39:19,161 INFO ]: Found specification of procedure state [2018-06-22 19:39:19,161 INFO ]: Found implementation of procedure state [2018-06-22 19:39:19,161 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:39:19,161 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:39:19,161 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 19:39:19,501 INFO ]: Using library mode [2018-06-22 19:39:19,502 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:39:19 BoogieIcfgContainer [2018-06-22 19:39:19,502 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:39:19,510 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:39:19,510 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:39:19,513 INFO ]: TraceAbstraction initialized [2018-06-22 19:39:19,513 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:39:19" (1/3) ... [2018-06-22 19:39:19,514 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274d7506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:39:19, skipping insertion in model container [2018-06-22 19:39:19,514 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:39:19" (2/3) ... [2018-06-22 19:39:19,514 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274d7506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:39:19, skipping insertion in model container [2018-06-22 19:39:19,514 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:39:19" (3/3) ... [2018-06-22 19:39:19,516 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:39:19,523 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:39:19,529 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:39:19,567 INFO ]: Using default assertion order modulation [2018-06-22 19:39:19,567 INFO ]: Interprodecural is true [2018-06-22 19:39:19,567 INFO ]: Hoare is false [2018-06-22 19:39:19,567 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:39:19,567 INFO ]: Backedges is TWOTRACK [2018-06-22 19:39:19,567 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:39:19,567 INFO ]: Difference is false [2018-06-22 19:39:19,567 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:39:19,567 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:39:19,581 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:39:19,590 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:39:19,590 INFO ]: Found error trace [2018-06-22 19:39:19,591 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:19,591 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:19,596 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:39:19,598 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:19,598 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:19,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:19,634 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:19,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:19,712 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:19,863 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:39:19,864 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:39:19,865 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:39:19,866 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:39:19,876 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:39:19,876 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:39:19,878 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:39:19,944 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:39:19,944 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:39:19,945 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:39:19,946 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:39:19,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:39:19,955 INFO ]: With dead ends: 13 [2018-06-22 19:39:19,955 INFO ]: Without dead ends: 13 [2018-06-22 19:39:19,956 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 19:39:19,969 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:39:19,987 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:39:19,989 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:39:19,989 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:39:19,990 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:39:19,991 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:39:19,991 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:39:19,991 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:39:19,991 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:39:19,992 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:39:19,992 INFO ]: Found error trace [2018-06-22 19:39:19,992 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:19,992 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:19,992 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:39:19,992 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:19,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:19,994 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:19,994 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:19,994 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:20,112 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:21,201 WARN ]: Spent 801.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-06-22 19:39:21,234 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:39:21,234 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:39:21,234 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 19:39:21,241 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:21,337 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:21,350 INFO ]: Computing forward predicates... [2018-06-22 19:39:21,646 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:21,663 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:22,908 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:39:22,937 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:39:22,937 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:39:22,938 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:39:22,938 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:39:22,938 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:39:22,938 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:39:23,187 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-06-22 19:39:23,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:39:23,341 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:39:23,372 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:39:23,373 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:39:23,373 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:39:23,373 INFO ]: With dead ends: 15 [2018-06-22 19:39:23,373 INFO ]: Without dead ends: 15 [2018-06-22 19:39:23,374 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:39:23,374 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:39:23,377 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:39:23,377 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:39:23,378 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:39:23,378 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:39:23,378 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:39:23,378 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:39:23,378 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:39:23,378 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:39:23,379 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:39:23,379 INFO ]: Found error trace [2018-06-22 19:39:23,379 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:23,379 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:23,379 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:39:23,379 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:23,379 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:23,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:23,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:39:23,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:23,439 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:23,922 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:39:23,922 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:39:23,922 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 19:39:23,939 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:39:24,038 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:39:24,038 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:24,044 INFO ]: Computing forward predicates... [2018-06-22 19:39:26,038 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:39:26,065 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:39:26,065 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:39:26,065 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:39:26,065 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:39:26,065 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:39:26,066 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:39:26,406 WARN ]: Spent 257.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2018-06-22 19:39:26,690 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:39:26,690 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:39:26,695 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:39:26,695 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:39:26,695 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:39:26,696 INFO ]: With dead ends: 17 [2018-06-22 19:39:26,696 INFO ]: Without dead ends: 17 [2018-06-22 19:39:26,696 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:39:26,697 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:39:26,699 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:39:26,699 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:39:26,700 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:39:26,700 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:39:26,700 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:39:26,700 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:39:26,700 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:39:26,700 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:39:26,700 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:39:26,700 INFO ]: Found error trace [2018-06-22 19:39:26,701 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:39:26,701 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:39:26,702 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:39:26,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:39:26,702 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:39:26,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:26,702 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:39:26,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:39:26,798 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:27,363 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-06-22 19:39:27,694 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2018-06-22 19:39:27,843 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:39:27,843 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:39:27,843 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 19:39:27,855 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:39:27,982 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:39:27,982 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:39:27,989 INFO ]: Computing forward predicates... [2018-06-22 19:39:28,777 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,223 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,263 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,422 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:29,481 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,588 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,726 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,733 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,806 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:29,923 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,128 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:30,163 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:30,172 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,320 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,432 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:30,471 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,570 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,790 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:30,801 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,814 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:30,817 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:30,963 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,018 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,116 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:31,361 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:31,492 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,549 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,635 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:31,735 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,750 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,884 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,929 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:31,986 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:32,006 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:47,053 WARN ]: Spent 919.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-06-22 19:39:47,460 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 19:39:48,924 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:48,964 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 19:39:50,399 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:39:50,506 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 19:39:51,649 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:39:51,739 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:51,782 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:51,825 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:39:51,876 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:51,889 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:39:51,902 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 19:40:04,166 WARN ]: Spent 777.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-06-22 19:40:07,857 WARN ]: Spent 206.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2018-06-22 19:40:08,470 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:40:08,491 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:40:08,491 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:40:08,492 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:40:08,492 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:40:08,492 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:40:08,492 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:40:09,253 WARN ]: Spent 618.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 170 [2018-06-22 19:40:10,022 WARN ]: Spent 709.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2018-06-22 19:40:10,751 WARN ]: Spent 681.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-06-22 19:40:11,408 WARN ]: Spent 613.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2018-06-22 19:40:11,458 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:40:11,458 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:40:11,460 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:40:11,460 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:40:11,460 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:40:11,461 INFO ]: With dead ends: 19 [2018-06-22 19:40:11,461 INFO ]: Without dead ends: 19 [2018-06-22 19:40:11,461 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:40:11,462 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:40:11,465 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:40:11,465 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:40:11,465 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:40:11,466 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:40:11,466 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:40:11,466 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:40:11,466 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:40:11,466 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:40:11,466 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:40:11,466 INFO ]: Found error trace [2018-06-22 19:40:11,467 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:40:11,467 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:40:11,467 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 19:40:11,467 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:40:11,467 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:40:11,468 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:11,468 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:40:11,468 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:11,554 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:12,334 WARN ]: Spent 318.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2018-06-22 19:40:12,507 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-06-22 19:40:13,164 WARN ]: Spent 578.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 98 [2018-06-22 19:40:13,316 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-06-22 19:40:13,986 WARN ]: Spent 486.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2018-06-22 19:40:14,158 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:40:14,158 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:40:14,158 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 19:40:14,164 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:40:14,285 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:40:14,285 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:14,300 INFO ]: Computing forward predicates... [2018-06-22 19:40:14,788 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:14,910 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:14,919 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:14,966 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:14,978 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:15,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,174 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:15,187 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:15,298 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,309 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,451 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,530 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,536 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,590 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:15,677 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,757 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,806 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,810 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,866 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:15,952 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,019 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:16,207 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,314 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,379 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,432 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,436 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,441 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,513 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,529 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:16,562 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,589 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:16,657 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:16,785 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:16,899 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:17,026 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:17,109 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:17,152 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:17,232 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:17,395 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:17,399 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:17,403 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:17,461 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 19:40:20,254 INFO ]: Timeout while computing interpolants [2018-06-22 19:40:20,455 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:40:20,455 WARN ]: Verification canceled [2018-06-22 19:40:20,459 WARN ]: Timeout [2018-06-22 19:40:20,459 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:40:20 BoogieIcfgContainer [2018-06-22 19:40:20,459 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:40:20,459 INFO ]: Toolchain (without parser) took 61425.18 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 255.3 MB in the beginning and 1.2 GB in the end (delta: -951.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:40:20,460 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:40:20,460 INFO ]: ChcToBoogie took 43.59 ms. Allocated memory is still 307.2 MB. Free memory was 254.3 MB in the beginning and 252.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:40:20,461 INFO ]: Boogie Preprocessor took 60.61 ms. Allocated memory is still 307.2 MB. Free memory was 252.3 MB in the beginning and 251.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 19:40:20,461 INFO ]: RCFGBuilder took 357.45 ms. Allocated memory is still 307.2 MB. Free memory was 251.4 MB in the beginning and 234.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:40:20,461 INFO ]: TraceAbstraction took 60949.14 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.7 MB in the beginning and 1.2 GB in the end (delta: -972.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:40:20,465 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 307.2 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 43.59 ms. Allocated memory is still 307.2 MB. Free memory was 254.3 MB in the beginning and 252.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.61 ms. Allocated memory is still 307.2 MB. Free memory was 252.3 MB in the beginning and 251.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 357.45 ms. Allocated memory is still 307.2 MB. Free memory was 251.4 MB in the beginning and 234.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60949.14 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.7 MB in the beginning and 1.2 GB in the end (delta: -972.2 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 26 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 53 quantified variables from 24 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 49 SDslu, 184 SDs, 0 SdLazy, 142 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 46.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 26868 SizeOfPredicates, 193 NumberOfNonLiveVariables, 1512 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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/PRODUCER_CONSUMER_vt_e2_1352.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-40-20-478.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e2_1352.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-40-20-478.csv Completed graceful shutdown