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/FIREFLY_luke_1a_e2_284_e3_3091.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 15:32:31,699 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 15:32:31,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 15:32:31,712 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 15:32:31,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 15:32:31,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 15:32:31,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 15:32:31,717 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 15:32:31,718 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 15:32:31,719 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 15:32:31,720 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 15:32:31,720 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 15:32:31,725 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 15:32:31,726 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 15:32:31,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 15:32:31,729 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 15:32:31,731 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 15:32:31,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 15:32:31,742 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 15:32:31,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 15:32:31,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 15:32:31,747 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 15:32:31,747 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 15:32:31,747 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 15:32:31,748 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 15:32:31,756 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 15:32:31,757 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 15:32:31,758 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 15:32:31,759 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 15:32:31,759 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 15:32:31,760 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 15:32:31,760 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 15:32:31,760 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 15:32:31,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 15:32:31,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 15:32:31,762 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 15:32:31,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 15:32:31,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 15:32:31,780 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 15:32:31,780 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 15:32:31,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 15:32:31,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 15:32:31,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 15:32:31,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 15:32:31,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:32:31,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 15:32:31,783 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 15:32:31,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 15:32:31,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 15:32:31,784 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 15:32:31,784 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 15:32:31,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 15:32:31,784 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 15:32:31,786 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 15:32:31,786 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 15:32:31,838 INFO ]: Repository-Root is: /tmp [2018-06-18 15:32:31,854 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 15:32:31,860 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 15:32:31,862 INFO ]: Initializing SmtParser... [2018-06-18 15:32:31,862 INFO ]: SmtParser initialized [2018-06-18 15:32:31,863 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 [2018-06-18 15:32:31,864 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 15:32:31,957 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 unknown [2018-06-18 15:32:32,515 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 [2018-06-18 15:32:32,520 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 15:32:32,534 INFO ]: Walking toolchain with 4 elements. [2018-06-18 15:32:32,534 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 15:32:32,534 INFO ]: Initializing ChcToBoogie... [2018-06-18 15:32:32,534 INFO ]: ChcToBoogie initialized [2018-06-18 15:32:32,541 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,694 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32 Unit [2018-06-18 15:32:32,695 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 15:32:32,697 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 15:32:32,698 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 15:32:32,698 INFO ]: Boogie Preprocessor initialized [2018-06-18 15:32:32,730 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,730 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,758 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,759 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,780 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,781 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,784 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (1/1) ... [2018-06-18 15:32:32,789 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 15:32:32,789 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 15:32:32,789 INFO ]: Initializing RCFGBuilder... [2018-06-18 15:32:32,789 INFO ]: RCFGBuilder initialized [2018-06-18 15:32:32,790 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:32:32,818 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 15:32:32,818 INFO ]: Found specification of procedure False [2018-06-18 15:32:32,818 INFO ]: Found implementation of procedure False [2018-06-18 15:32:32,818 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 15:32:32,818 INFO ]: Found specification of procedure state [2018-06-18 15:32:32,818 INFO ]: Found implementation of procedure state [2018-06-18 15:32:32,818 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 15:32:32,818 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 15:32:32,819 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 15:32:33,165 INFO ]: Using library mode [2018-06-18 15:32:33,165 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:32:33 BoogieIcfgContainer [2018-06-18 15:32:33,165 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 15:32:33,168 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 15:32:33,168 INFO ]: Initializing TraceAbstraction... [2018-06-18 15:32:33,172 INFO ]: TraceAbstraction initialized [2018-06-18 15:32:33,174 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:32:32" (1/3) ... [2018-06-18 15:32:33,175 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 03:32:33, skipping insertion in model container [2018-06-18 15:32:33,175 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:32:32" (2/3) ... [2018-06-18 15:32:33,175 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 03:32:33, skipping insertion in model container [2018-06-18 15:32:33,175 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:32:33" (3/3) ... [2018-06-18 15:32:33,177 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 15:32:33,187 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 15:32:33,198 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 15:32:33,238 INFO ]: Using default assertion order modulation [2018-06-18 15:32:33,238 INFO ]: Interprodecural is true [2018-06-18 15:32:33,238 INFO ]: Hoare is false [2018-06-18 15:32:33,238 INFO ]: Compute interpolants for FPandBP [2018-06-18 15:32:33,238 INFO ]: Backedges is TWOTRACK [2018-06-18 15:32:33,238 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 15:32:33,238 INFO ]: Difference is false [2018-06-18 15:32:33,238 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 15:32:33,239 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 15:32:33,253 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 15:32:33,264 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 15:32:33,264 INFO ]: Found error trace [2018-06-18 15:32:33,265 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:32:33,265 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:32:33,270 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 15:32:33,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:32:33,273 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:32:33,311 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:33,311 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:32:33,311 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:33,409 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:32:33,427 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:32:33,615 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 15:32:33,617 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 15:32:33,617 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 15:32:33,618 INFO ]: Interpolant automaton has 4 states [2018-06-18 15:32:33,629 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 15:32:33,629 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:32:33,632 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 15:32:33,802 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:32:33,802 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 15:32:33,805 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 15:32:33,806 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 15:32:33,806 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:32:33,821 INFO ]: With dead ends: 13 [2018-06-18 15:32:33,821 INFO ]: Without dead ends: 13 [2018-06-18 15:32:33,823 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 [2018-06-18 15:32:33,841 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 15:32:33,875 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 15:32:33,877 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 15:32:33,879 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 15:32:33,880 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 15:32:33,880 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:32:33,880 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 15:32:33,880 INFO ]: Interpolant automaton has 4 states. [2018-06-18 15:32:33,880 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 15:32:33,881 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 15:32:33,881 INFO ]: Found error trace [2018-06-18 15:32:33,881 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:32:33,882 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:32:33,882 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 15:32:33,882 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:32:33,882 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:32:33,883 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:33,883 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:32:33,883 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:34,013 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:32:34,014 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:32:34,759 WARN ]: Spent 499.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2018-06-18 15:32:34,874 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:32:34,874 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:32:34,874 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 [2018-06-18 15:32:34,887 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:32:35,026 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:32:35,040 INFO ]: Computing forward predicates... [2018-06-18 15:32:36,652 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:36,669 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:32:36,958 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:32:36,982 WARN ]: expecting exponential blowup for input size 11 [2018-06-18 15:32:37,271 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:37,278 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:37,373 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:37,376 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:37,379 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:37,384 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:32:37,398 WARN ]: expecting exponential blowup for input size 11 [2018-06-18 15:32:37,416 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:32:37,607 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:37,623 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:37,662 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:37,666 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:38,287 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:32:38,288 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 15:32:38,290 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 15:32:38,291 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:32:38,302 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:38,306 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:38,311 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:38,315 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:32:57,065 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 9 [2018-06-18 15:32:57,078 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:32:57,113 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 15:32:57,113 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-18 15:32:57,114 INFO ]: Interpolant automaton has 7 states [2018-06-18 15:32:57,114 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-18 15:32:57,114 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-18 15:32:57,114 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-18 15:32:57,366 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-06-18 15:32:57,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:32:57,438 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 15:32:57,439 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 15:32:57,439 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-18 15:32:57,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:32:57,440 INFO ]: With dead ends: 15 [2018-06-18 15:32:57,440 INFO ]: Without dead ends: 15 [2018-06-18 15:32:57,441 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-18 15:32:57,441 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 15:32:57,442 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 15:32:57,443 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 15:32:57,443 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 15:32:57,443 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 15:32:57,443 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:32:57,443 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 15:32:57,443 INFO ]: Interpolant automaton has 7 states. [2018-06-18 15:32:57,443 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 15:32:57,444 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 15:32:57,444 INFO ]: Found error trace [2018-06-18 15:32:57,444 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:32:57,444 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:32:57,444 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 15:32:57,444 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:32:57,444 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:32:57,445 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:57,445 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:32:57,445 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:32:57,586 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:32:57,587 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:32:58,038 WARN ]: Spent 153.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2018-06-18 15:32:58,536 WARN ]: Spent 483.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2018-06-18 15:32:58,679 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-06-18 15:32:58,707 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 15:32:58,708 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:32:58,708 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 15:32:58,724 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 15:32:58,868 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 15:32:58,868 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:32:58,876 INFO ]: Computing forward predicates... [2018-06-18 15:32:59,021 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:32:59,022 WARN ]: expecting exponential blowup for input size 26 Received shutdown request... [2018-06-18 15:33:26,610 INFO ]: Timeout while computing interpolants [2018-06-18 15:33:26,810 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:33:26,810 WARN ]: Verification canceled [2018-06-18 15:33:26,814 WARN ]: Timeout [2018-06-18 15:33:26,815 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 03:33:26 BoogieIcfgContainer [2018-06-18 15:33:26,815 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 15:33:26,815 INFO ]: Toolchain (without parser) took 54295.43 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 245.6 MB in the beginning and 914.5 MB in the end (delta: -668.8 MB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-18 15:33:26,816 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 15:33:26,817 INFO ]: ChcToBoogie took 160.96 ms. Allocated memory is still 309.3 MB. Free memory was 245.6 MB in the beginning and 239.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:33:26,817 INFO ]: Boogie Preprocessor took 91.17 ms. Allocated memory is still 309.3 MB. Free memory was 239.6 MB in the beginning and 238.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 15:33:26,818 INFO ]: RCFGBuilder took 376.20 ms. Allocated memory is still 309.3 MB. Free memory was 238.6 MB in the beginning and 209.6 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:33:26,818 INFO ]: TraceAbstraction took 53646.25 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 209.6 MB in the beginning and 914.5 MB in the end (delta: -704.8 MB). Peak memory consumption was 3.1 GB. Max. memory is 3.6 GB. [2018-06-18 15:33:26,826 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 160.96 ms. Allocated memory is still 309.3 MB. Free memory was 245.6 MB in the beginning and 239.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.17 ms. Allocated memory is still 309.3 MB. Free memory was 239.6 MB in the beginning and 238.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 376.20 ms. Allocated memory is still 309.3 MB. Free memory was 238.6 MB in the beginning and 209.6 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 53646.25 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 209.6 MB in the beginning and 914.5 MB in the end (delta: -704.8 MB). Peak memory consumption was 3.1 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 transforming 26 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 53.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s 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, 0.3s SatisfiabilityAnalysisTime, 23.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308 SizeOfPredicates, 30 NumberOfNonLiveVariables, 526 ConjunctsInSsa, 38 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/FIREFLY_luke_1a_e2_284_e3_3091.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_15-33-26-837.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e3_3091.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_15-33-26-837.csv Completed graceful shutdown