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_e7_1059_e8_1111.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:40:23,569 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:40:23,570 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:40:23,582 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:40:23,582 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:40:23,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:40:23,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:40:23,588 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:40:23,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:40:23,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:40:23,593 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:40:23,593 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:40:23,594 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:40:23,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:40:23,598 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:40:23,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:40:23,611 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:40:23,613 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:40:23,614 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:40:23,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:40:23,616 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:40:23,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:40:23,619 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:40:23,619 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:40:23,624 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:40:23,625 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:40:23,626 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:40:23,626 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:40:23,627 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:40:23,628 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:40:23,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:40:23,629 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:40:23,629 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:40:23,630 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:40:23,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:40:23,631 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 19:40:23,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:40:23,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:40:23,648 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:40:23,648 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:40:23,649 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:40:23,650 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:40:23,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:40:23,650 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:40:23,650 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:40:23,651 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:40:23,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:40:23,651 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:40:23,651 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:40:23,651 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:40:23,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:40:23,652 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:40:23,652 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:40:23,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:40:23,652 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:40:23,654 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:40:23,655 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:40:23,703 INFO ]: Repository-Root is: /tmp [2018-06-22 19:40:23,718 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:40:23,723 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:40:23,725 INFO ]: Initializing SmtParser... [2018-06-22 19:40:23,725 INFO ]: SmtParser initialized [2018-06-22 19:40:23,726 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e7_1059_e8_1111.smt2 [2018-06-22 19:40:23,727 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 19:40:23,820 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e7_1059_e8_1111.smt2 unknown [2018-06-22 19:40:24,187 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e7_1059_e8_1111.smt2 [2018-06-22 19:40:24,192 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:40:24,198 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:40:24,199 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:40:24,199 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:40:24,199 INFO ]: ChcToBoogie initialized [2018-06-22 19:40:24,202 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,264 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24 Unit [2018-06-22 19:40:24,264 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:40:24,265 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:40:24,265 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:40:24,265 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:40:24,292 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,292 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,299 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,300 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,305 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,306 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,308 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (1/1) ... [2018-06-22 19:40:24,310 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:40:24,311 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:40:24,311 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:40:24,311 INFO ]: RCFGBuilder initialized [2018-06-22 19:40:24,312 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (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 19:40:24,327 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:40:24,327 INFO ]: Found specification of procedure False [2018-06-22 19:40:24,327 INFO ]: Found implementation of procedure False [2018-06-22 19:40:24,327 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:40:24,327 INFO ]: Found specification of procedure state [2018-06-22 19:40:24,327 INFO ]: Found implementation of procedure state [2018-06-22 19:40:24,327 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:40:24,327 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:40:24,327 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 19:40:24,657 INFO ]: Using library mode [2018-06-22 19:40:24,658 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:40:24 BoogieIcfgContainer [2018-06-22 19:40:24,658 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:40:24,659 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:40:24,659 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:40:24,663 INFO ]: TraceAbstraction initialized [2018-06-22 19:40:24,663 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:40:24" (1/3) ... [2018-06-22 19:40:24,664 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de24ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:40:24, skipping insertion in model container [2018-06-22 19:40:24,664 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:40:24" (2/3) ... [2018-06-22 19:40:24,664 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de24ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:40:24, skipping insertion in model container [2018-06-22 19:40:24,664 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:40:24" (3/3) ... [2018-06-22 19:40:24,666 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:40:24,677 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:40:24,688 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:40:24,727 INFO ]: Using default assertion order modulation [2018-06-22 19:40:24,727 INFO ]: Interprodecural is true [2018-06-22 19:40:24,728 INFO ]: Hoare is false [2018-06-22 19:40:24,728 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:40:24,728 INFO ]: Backedges is TWOTRACK [2018-06-22 19:40:24,728 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:40:24,728 INFO ]: Difference is false [2018-06-22 19:40:24,728 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:40:24,728 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:40:24,741 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:40:24,752 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:40:24,752 INFO ]: Found error trace [2018-06-22 19:40:24,753 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:40:24,753 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:40:24,757 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:40:24,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:40:24,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:40:24,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:24,792 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:40:24,792 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:24,865 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:25,077 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:40:25,079 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:40:25,079 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:40:25,081 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:40:25,097 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:40:25,098 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:40:25,100 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:40:25,189 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:40:25,189 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:40:25,190 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:40:25,191 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:40:25,191 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:40:25,203 INFO ]: With dead ends: 13 [2018-06-22 19:40:25,203 INFO ]: Without dead ends: 13 [2018-06-22 19:40:25,205 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 19:40:25,219 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:40:25,247 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:40:25,249 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:40:25,249 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:40:25,251 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:40:25,251 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:40:25,251 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:40:25,251 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:40:25,251 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:40:25,253 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:40:25,253 INFO ]: Found error trace [2018-06-22 19:40:25,253 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:40:25,253 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:40:25,253 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:40:25,253 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:40:25,253 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:40:25,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:25,254 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:40:25,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:25,334 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:26,687 WARN ]: Spent 1.10 s on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2018-06-22 19:40:26,881 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:40:26,881 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:40:26,881 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 19:40:26,889 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:40:26,975 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:26,986 INFO ]: Computing forward predicates... [2018-06-22 19:40:27,259 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:40:28,713 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-06-22 19:40:28,862 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:40:28,885 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:40:28,885 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:40:28,885 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:40:28,885 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:40:28,885 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:40:28,886 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:40:29,076 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-06-22 19:40:29,268 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:40:29,268 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:40:29,269 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:40:29,269 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:40:29,269 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:40:29,270 INFO ]: With dead ends: 15 [2018-06-22 19:40:29,270 INFO ]: Without dead ends: 15 [2018-06-22 19:40:29,271 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:40:29,271 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:40:29,273 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:40:29,273 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:40:29,273 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:40:29,274 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:40:29,274 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:40:29,274 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:40:29,274 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:40:29,274 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:40:29,274 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:40:29,274 INFO ]: Found error trace [2018-06-22 19:40:29,274 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:40:29,275 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:40:29,275 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:40:29,275 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:40:29,275 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:40:29,276 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:29,276 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:40:29,276 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:40:29,342 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:29,732 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2018-06-22 19:40:29,940 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-06-22 19:40:30,053 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:40:30,053 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:40:30,053 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) [2018-06-22 19:40:30,068 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:40:30,155 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:40:30,155 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:40:30,162 INFO ]: Computing forward predicates... [2018-06-22 19:40:30,597 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:30,734 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:30,772 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:40:30,804 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:40:30,861 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:40:30,913 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:40:30,937 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 19:40:31,210 WARN ]: Simplifying disjunction of 15552 conjuctions. This might take some time... [2018-06-22 19:41:05,704 INFO ]: Simplified to disjunction of 15552 conjuctions. [2018-06-22 19:41:05,743 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:41:05,767 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:41:05,794 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 19:41:05,876 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:41:42,621 INFO ]: Timeout while computing interpolants [2018-06-22 19:41:42,822 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:41:42,822 WARN ]: Verification canceled [2018-06-22 19:41:42,826 WARN ]: Timeout [2018-06-22 19:41:42,826 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:41:42 BoogieIcfgContainer [2018-06-22 19:41:42,826 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:41:42,827 INFO ]: Toolchain (without parser) took 78634.39 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 253.2 MB in the beginning and 679.0 MB in the end (delta: -425.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 19:41:42,828 INFO ]: SmtParser took 0.54 ms. Allocated memory is still 307.8 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:41:42,828 INFO ]: ChcToBoogie took 65.64 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:41:42,829 INFO ]: Boogie Preprocessor took 45.75 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 249.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 19:41:42,829 INFO ]: RCFGBuilder took 346.94 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 232.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:41:42,830 INFO ]: TraceAbstraction took 78166.79 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 232.1 MB in the beginning and 679.0 MB in the end (delta: -446.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 19:41:42,833 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.54 ms. Allocated memory is still 307.8 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.64 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.75 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 249.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 346.94 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 232.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78166.79 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 232.1 MB in the beginning and 679.0 MB in the end (delta: -446.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 20736 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 78.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 53 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2376 SizeOfPredicates, 38 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e7_1059_e8_1111.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-41-42-844.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e7_1059_e8_1111.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-41-42-844.csv Completed graceful shutdown