java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:27:50,529 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:27:50,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:27:50,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:27:50,546 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:27:50,547 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:27:50,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:27:50,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:27:50,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:27:50,555 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:27:50,556 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:27:50,556 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:27:50,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:27:50,558 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:27:50,562 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:27:50,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:27:50,565 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:27:50,578 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:27:50,579 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:27:50,580 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:27:50,581 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:27:50,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:27:50,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:27:50,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:27:50,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:27:50,585 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:27:50,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:27:50,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:27:50,591 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:27:50,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:27:50,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:27:50,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:27:50,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:27:50,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:27:50,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:27:50,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:27:50,611 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:27:50,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:27:50,612 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:27:50,612 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:27:50,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:27:50,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:27:50,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:27:50,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:27:50,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:27:50,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:27:50,615 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:27:50,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:27:50,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:27:50,615 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:27:50,616 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:27:50,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:27:50,616 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:27:50,622 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:27:50,622 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:27:50,667 INFO ]: Repository-Root is: /tmp [2018-06-18 16:27:50,683 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:27:50,688 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:27:50,690 INFO ]: Initializing SmtParser... [2018-06-18 16:27:50,691 INFO ]: SmtParser initialized [2018-06-18 16:27:50,691 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 [2018-06-18 16:27:50,692 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 [2018-06-18 16:27:50,782 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 unknown [2018-06-18 16:27:51,181 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e2_1352.smt2 [2018-06-18 16:27:51,186 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:27:51,191 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:27:51,191 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:27:51,191 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:27:51,192 INFO ]: ChcToBoogie initialized [2018-06-18 16:27:51,198 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51 Unit [2018-06-18 16:27:51,297 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:27:51,298 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:27:51,298 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:27:51,298 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:27:51,328 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,328 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,342 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,342 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,347 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,348 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,350 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (1/1) ... [2018-06-18 16:27:51,352 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:27:51,355 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:27:51,355 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:27:51,355 INFO ]: RCFGBuilder initialized [2018-06-18 16:27:51,356 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (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) [2018-06-18 16:27:51,370 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:27:51,370 INFO ]: Found specification of procedure False [2018-06-18 16:27:51,370 INFO ]: Found implementation of procedure False [2018-06-18 16:27:51,370 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:27:51,370 INFO ]: Found specification of procedure state [2018-06-18 16:27:51,370 INFO ]: Found implementation of procedure state [2018-06-18 16:27:51,370 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:27:51,370 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:27:51,370 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 [2018-06-18 16:27:51,627 INFO ]: Using library mode [2018-06-18 16:27:51,628 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:27:51 BoogieIcfgContainer [2018-06-18 16:27:51,628 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:27:51,629 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:27:51,629 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:27:51,632 INFO ]: TraceAbstraction initialized [2018-06-18 16:27:51,633 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:27:51" (1/3) ... [2018-06-18 16:27:51,634 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a442bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:27:51, skipping insertion in model container [2018-06-18 16:27:51,634 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:51" (2/3) ... [2018-06-18 16:27:51,634 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a442bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:27:51, skipping insertion in model container [2018-06-18 16:27:51,634 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:27:51" (3/3) ... [2018-06-18 16:27:51,636 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:27:51,652 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:27:51,663 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:27:51,708 INFO ]: Using default assertion order modulation [2018-06-18 16:27:51,708 INFO ]: Interprodecural is true [2018-06-18 16:27:51,708 INFO ]: Hoare is false [2018-06-18 16:27:51,709 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:27:51,709 INFO ]: Backedges is TWOTRACK [2018-06-18 16:27:51,709 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:27:51,709 INFO ]: Difference is false [2018-06-18 16:27:51,709 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:27:51,709 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:27:51,722 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:27:51,737 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:27:51,737 INFO ]: Found error trace [2018-06-18 16:27:51,738 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:51,739 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:51,745 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 16:27:51,747 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:51,747 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:51,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:51,785 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:51,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:51,864 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:51,874 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:52,083 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:27:52,085 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:27:52,085 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:27:52,087 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:27:52,099 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:27:52,100 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:27:52,102 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:27:52,204 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:52,204 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:27:52,205 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:27:52,207 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:27:52,207 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:52,222 INFO ]: With dead ends: 13 [2018-06-18 16:27:52,222 INFO ]: Without dead ends: 13 [2018-06-18 16:27:52,225 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 [2018-06-18 16:27:52,241 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:27:52,261 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:27:52,263 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:27:52,263 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:27:52,265 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:27:52,265 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:52,265 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:27:52,265 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:27:52,265 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:27:52,266 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:27:52,266 INFO ]: Found error trace [2018-06-18 16:27:52,266 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:52,267 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:52,267 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 16:27:52,267 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:52,267 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:52,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:52,268 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:52,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:52,354 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:52,355 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:53,807 WARN ]: Spent 1.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2018-06-18 16:27:53,969 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:27:53,969 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:27:53,969 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) [2018-06-18 16:27:53,989 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:27:54,085 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:54,098 INFO ]: Computing forward predicates... [2018-06-18 16:27:54,449 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:54,470 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:55,971 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-06-18 16:27:56,064 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:27:56,093 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:27:56,093 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:27:56,094 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:27:56,094 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:27:56,094 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:27:56,095 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:27:56,459 WARN ]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-06-18 16:27:56,602 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:56,603 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:27:56,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:27:56,603 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:27:56,603 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:56,604 INFO ]: With dead ends: 15 [2018-06-18 16:27:56,604 INFO ]: Without dead ends: 15 [2018-06-18 16:27:56,604 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-06-18 16:27:56,604 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:27:56,607 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:27:56,607 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:27:56,608 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:27:56,608 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:27:56,608 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:56,608 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:27:56,608 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:27:56,608 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:27:56,609 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:27:56,609 INFO ]: Found error trace [2018-06-18 16:27:56,609 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:56,609 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:56,609 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 16:27:56,609 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:56,609 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:56,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:56,610 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:56,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:56,673 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:56,674 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:57,183 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-06-18 16:27:57,371 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-06-18 16:27:57,471 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:27:57,471 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:27:57,471 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 [2018-06-18 16:27:57,485 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:27:57,565 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:27:57,565 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:57,570 INFO ]: Computing forward predicates... [2018-06-18 16:27:57,718 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:27:57,745 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:57,757 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:57,770 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:27:57,784 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:57,790 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:27:59,412 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:27:59,437 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:27:59,437 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 16:27:59,438 INFO ]: Interpolant automaton has 12 states [2018-06-18 16:27:59,438 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 16:27:59,438 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-18 16:27:59,438 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 16:27:59,779 WARN ]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-06-18 16:28:00,118 WARN ]: Spent 234.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-06-18 16:28:00,323 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:28:00,323 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:28:00,326 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:28:00,326 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 16:28:00,327 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:28:00,327 INFO ]: With dead ends: 17 [2018-06-18 16:28:00,327 INFO ]: Without dead ends: 17 [2018-06-18 16:28:00,328 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:28:00,329 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 16:28:00,331 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 16:28:00,331 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 16:28:00,332 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 16:28:00,332 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 16:28:00,332 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:28:00,332 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 16:28:00,332 INFO ]: Interpolant automaton has 12 states. [2018-06-18 16:28:00,332 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 16:28:00,333 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 16:28:00,333 INFO ]: Found error trace [2018-06-18 16:28:00,333 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:28:00,333 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:28:00,333 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-18 16:28:00,333 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:28:00,334 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:28:00,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:28:00,334 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:28:00,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:28:00,462 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:28:00,463 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:28:01,008 WARN ]: Spent 258.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 74 [2018-06-18 16:28:01,134 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-06-18 16:28:01,398 WARN ]: Spent 249.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2018-06-18 16:28:01,590 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:28:01,590 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:28:01,590 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 [2018-06-18 16:28:01,599 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 16:28:01,747 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 16:28:01,747 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:28:01,755 INFO ]: Computing forward predicates... [2018-06-18 16:28:02,627 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:02,821 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:02,837 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:02,963 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:03,235 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:03,451 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,602 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,695 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,717 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,788 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,813 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,898 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:03,968 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,085 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:04,209 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,228 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:04,236 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,391 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:04,459 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,600 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:04,666 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:04,789 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,920 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:04,941 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,156 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,252 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,305 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:05,437 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,440 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,473 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,504 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,592 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,667 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,713 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:05,833 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:05,842 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:05,927 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:06,095 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:06,141 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:06,172 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:06,214 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:06,295 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:23,014 WARN ]: Spent 512.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-06-18 16:28:23,245 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:23,276 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:23,329 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:23,332 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:23,374 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:25,840 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:28:25,862 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:28:25,862 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-18 16:28:25,862 INFO ]: Interpolant automaton has 16 states [2018-06-18 16:28:25,862 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-18 16:28:25,862 INFO ]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:28:25,862 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-18 16:28:26,370 WARN ]: Spent 463.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 151 [2018-06-18 16:28:26,735 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2018-06-18 16:28:27,063 WARN ]: Spent 290.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 117 [2018-06-18 16:28:27,364 WARN ]: Spent 263.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2018-06-18 16:28:27,417 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:28:27,417 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 16:28:27,421 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 16:28:27,421 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-18 16:28:27,421 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:28:27,421 INFO ]: With dead ends: 19 [2018-06-18 16:28:27,421 INFO ]: Without dead ends: 19 [2018-06-18 16:28:27,422 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-06-18 16:28:27,422 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 16:28:27,425 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 16:28:27,425 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 16:28:27,426 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 16:28:27,426 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 16:28:27,426 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:28:27,426 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 16:28:27,426 INFO ]: Interpolant automaton has 16 states. [2018-06-18 16:28:27,426 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 16:28:27,427 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 16:28:27,427 INFO ]: Found error trace [2018-06-18 16:28:27,427 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:28:27,427 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:28:27,427 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-18 16:28:27,427 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:28:27,427 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:28:27,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:28:27,428 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:28:27,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:28:27,562 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:28:27,563 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:28:28,662 WARN ]: Spent 646.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 65 [2018-06-18 16:28:29,143 WARN ]: Spent 430.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2018-06-18 16:28:29,451 WARN ]: Spent 263.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2018-06-18 16:28:29,955 WARN ]: Spent 370.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2018-06-18 16:28:30,325 WARN ]: Spent 246.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2018-06-18 16:28:30,516 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2018-06-18 16:28:30,659 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2018-06-18 16:28:30,729 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 16:28:30,729 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:28:30,729 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) [2018-06-18 16:28:30,747 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:28:30,874 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 16:28:30,874 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:28:30,890 INFO ]: Computing forward predicates... [2018-06-18 16:28:31,157 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 16:28:32,009 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:32,031 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:32,239 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:33,000 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:33,097 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:33,301 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 16:28:34,014 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:34,106 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:34,328 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:34,530 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:34,556 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:35,682 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:35,702 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 16:28:35,721 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-18 16:28:42,285 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-18 16:28:42,302 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:42,324 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:42,344 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:42,371 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:42,392 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-18 16:28:48,841 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-18 16:28:48,858 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:48,903 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 16:28:48,932 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-18 16:28:54,462 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-18 16:28:54,479 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:54,509 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:54,529 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:54,557 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:28:54,583 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 16:28:54,616 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... Received shutdown request... [2018-06-18 16:28:56,139 INFO ]: Timeout while computing interpolants [2018-06-18 16:28:56,341 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:28:56,341 WARN ]: Verification canceled [2018-06-18 16:28:56,345 WARN ]: Timeout [2018-06-18 16:28:56,346 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:28:56 BoogieIcfgContainer [2018-06-18 16:28:56,346 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:28:56,347 INFO ]: Toolchain (without parser) took 65159.99 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 256.2 MB in the beginning and 917.5 MB in the end (delta: -661.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-18 16:28:56,348 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:28:56,348 INFO ]: ChcToBoogie took 106.30 ms. Allocated memory is still 308.8 MB. Free memory was 256.2 MB in the beginning and 253.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:56,348 INFO ]: Boogie Preprocessor took 54.20 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:56,349 INFO ]: RCFGBuilder took 272.52 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 234.2 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:56,349 INFO ]: TraceAbstraction took 64716.57 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.2 MB in the beginning and 917.5 MB in the end (delta: -683.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-18 16:28:56,357 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.30 ms. Allocated memory is still 308.8 MB. Free memory was 256.2 MB in the beginning and 253.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.20 ms. Allocated memory is still 308.8 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 272.52 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 234.2 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64716.57 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.2 MB in the beginning and 917.5 MB in the end (delta: -683.3 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 DnfTransformerHelper was XNF transformer was simplifying 5184 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 64.6s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 48 SDslu, 190 SDs, 0 SdLazy, 146 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 7.2s 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 23100 SizeOfPredicates, 176 NumberOfNonLiveVariables, 1512 ConjunctsInSsa, 209 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_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-28-56-370.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e2_1352.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-28-56-370.csv Completed graceful shutdown