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/FIREFLY_luke_1a_e2_284.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:16:24,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:16:24,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:16:24,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:16:24,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:16:24,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:16:24,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:16:24,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:16:24,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:16:24,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:16:24,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:16:24,863 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:16:24,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:16:24,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:16:24,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:16:24,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:16:24,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:16:24,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:16:24,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:16:24,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:16:24,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:16:24,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:16:24,888 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:16:24,888 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:16:24,889 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:16:24,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:16:24,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:16:24,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:16:24,896 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:16:24,896 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:16:24,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:16:24,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:16:24,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:16:24,903 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:16:24,903 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:16:24,903 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 18:16:24,928 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:16:24,928 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:16:24,929 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:16:24,929 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:16:24,932 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:16:24,933 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:16:24,933 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:16:24,933 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:16:24,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:16:24,934 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:16:24,934 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:16:24,935 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:16:24,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:16:24,935 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:16:24,937 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:16:24,937 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:16:24,977 INFO ]: Repository-Root is: /tmp [2018-06-22 18:16:24,993 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:16:24,998 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:16:25,000 INFO ]: Initializing SmtParser... [2018-06-22 18:16:25,000 INFO ]: SmtParser initialized [2018-06-22 18:16:25,001 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 [2018-06-22 18:16:25,002 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 18:16:25,092 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 unknown [2018-06-22 18:16:25,781 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 [2018-06-22 18:16:25,786 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:16:25,792 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:16:25,793 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:16:25,793 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:16:25,793 INFO ]: ChcToBoogie initialized [2018-06-22 18:16:25,796 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,851 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25 Unit [2018-06-22 18:16:25,851 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:16:25,852 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:16:25,852 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:16:25,852 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:16:25,875 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,875 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,896 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,897 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,917 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,919 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,921 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (1/1) ... [2018-06-22 18:16:25,925 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:16:25,926 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:16:25,926 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:16:25,926 INFO ]: RCFGBuilder initialized [2018-06-22 18:16:25,927 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (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 [2018-06-22 18:16:25,945 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:16:25,945 INFO ]: Found specification of procedure False [2018-06-22 18:16:25,945 INFO ]: Found implementation of procedure False [2018-06-22 18:16:25,945 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:16:25,945 INFO ]: Found specification of procedure state [2018-06-22 18:16:25,945 INFO ]: Found implementation of procedure state [2018-06-22 18:16:25,945 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:16:25,945 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:16:25,945 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:16:26,374 INFO ]: Using library mode [2018-06-22 18:16:26,374 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:16:26 BoogieIcfgContainer [2018-06-22 18:16:26,374 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:16:26,376 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:16:26,376 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:16:26,382 INFO ]: TraceAbstraction initialized [2018-06-22 18:16:26,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:16:25" (1/3) ... [2018-06-22 18:16:26,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19112d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:16:26, skipping insertion in model container [2018-06-22 18:16:26,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:16:25" (2/3) ... [2018-06-22 18:16:26,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19112d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:16:26, skipping insertion in model container [2018-06-22 18:16:26,384 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:16:26" (3/3) ... [2018-06-22 18:16:26,385 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:16:26,396 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:16:26,405 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:16:26,451 INFO ]: Using default assertion order modulation [2018-06-22 18:16:26,451 INFO ]: Interprodecural is true [2018-06-22 18:16:26,451 INFO ]: Hoare is false [2018-06-22 18:16:26,451 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:16:26,451 INFO ]: Backedges is TWOTRACK [2018-06-22 18:16:26,451 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:16:26,452 INFO ]: Difference is false [2018-06-22 18:16:26,452 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:16:26,452 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:16:26,470 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:16:26,483 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:16:26,483 INFO ]: Found error trace [2018-06-22 18:16:26,484 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:16:26,484 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:16:26,490 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 18:16:26,492 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:16:26,492 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:16:26,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:26,540 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:16:26,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:26,632 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:16:26,858 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:16:26,860 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:16:26,861 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:16:26,863 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:16:26,878 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:16:26,879 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:16:26,881 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:16:27,020 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:16:27,020 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:16:27,042 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:16:27,043 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:16:27,044 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:16:27,055 INFO ]: With dead ends: 13 [2018-06-22 18:16:27,055 INFO ]: Without dead ends: 13 [2018-06-22 18:16:27,057 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:16:27,083 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:16:27,112 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:16:27,116 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:16:27,117 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:16:27,118 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:16:27,118 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:16:27,118 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:16:27,118 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:16:27,118 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:16:27,120 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:16:27,120 INFO ]: Found error trace [2018-06-22 18:16:27,120 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:16:27,120 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:16:27,120 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 18:16:27,120 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:16:27,120 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:16:27,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:27,121 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:16:27,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:27,224 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:16:28,104 WARN ]: Spent 648.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2018-06-22 18:16:28,162 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:16:28,162 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:16:28,162 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 18:16:28,171 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:16:28,307 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:16:28,319 INFO ]: Computing forward predicates... [2018-06-22 18:16:29,972 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:29,988 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:16:30,269 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:16:30,290 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:16:30,582 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:30,589 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:30,683 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:30,686 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:30,691 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:30,698 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:16:30,711 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:16:30,734 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:16:30,954 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:30,968 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:31,003 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:31,007 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:31,614 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:16:31,614 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:16:31,639 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:16:31,640 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:16:31,658 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:31,664 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:31,673 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:31,679 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:16:52,200 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 9 [2018-06-22 18:16:52,210 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:16:52,248 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:16:52,249 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 18:16:52,249 INFO ]: Interpolant automaton has 7 states [2018-06-22 18:16:52,249 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 18:16:52,249 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 18:16:52,250 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 18:16:52,416 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:16:52,416 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:16:52,417 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:16:52,417 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 18:16:52,417 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:16:52,418 INFO ]: With dead ends: 15 [2018-06-22 18:16:52,418 INFO ]: Without dead ends: 15 [2018-06-22 18:16:52,418 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 [2018-06-22 18:16:52,418 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:16:52,421 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:16:52,421 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:16:52,421 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:16:52,421 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:16:52,421 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:16:52,421 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:16:52,421 INFO ]: Interpolant automaton has 7 states. [2018-06-22 18:16:52,421 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:16:52,422 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:16:52,422 INFO ]: Found error trace [2018-06-22 18:16:52,422 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:16:52,422 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:16:52,422 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 18:16:52,422 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:16:52,422 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:16:52,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:52,423 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:16:52,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:16:52,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:16:53,417 WARN ]: Spent 548.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2018-06-22 18:16:53,682 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2018-06-22 18:16:53,796 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:16:53,796 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:16:53,796 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:16:53,811 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:16:53,919 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:16:53,919 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:16:53,928 INFO ]: Computing forward predicates... [2018-06-22 18:16:54,077 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:16:54,105 WARN ]: expecting exponential blowup for input size 26 Received shutdown request... [2018-06-22 18:17:18,859 INFO ]: Timeout while computing interpolants [2018-06-22 18:17:19,059 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:17:19,060 WARN ]: Verification canceled [2018-06-22 18:17:19,064 WARN ]: Timeout [2018-06-22 18:17:19,065 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:17:19 BoogieIcfgContainer [2018-06-22 18:17:19,065 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:17:19,066 INFO ]: Toolchain (without parser) took 53279.82 ms. Allocated memory was 304.1 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 240.5 MB in the beginning and 888.3 MB in the end (delta: -647.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. [2018-06-22 18:17:19,067 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:17:19,067 INFO ]: ChcToBoogie took 58.89 ms. Allocated memory is still 304.1 MB. Free memory was 239.5 MB in the beginning and 237.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:17:19,067 INFO ]: Boogie Preprocessor took 73.40 ms. Allocated memory is still 304.1 MB. Free memory was 237.5 MB in the beginning and 235.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:17:19,068 INFO ]: RCFGBuilder took 448.57 ms. Allocated memory is still 304.1 MB. Free memory was 235.4 MB in the beginning and 206.4 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:17:19,068 INFO ]: TraceAbstraction took 52689.38 ms. Allocated memory was 304.1 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 206.4 MB in the beginning and 888.3 MB in the end (delta: -681.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. [2018-06-22 18:17:19,077 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 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.89 ms. Allocated memory is still 304.1 MB. Free memory was 239.5 MB in the beginning and 237.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 73.40 ms. Allocated memory is still 304.1 MB. Free memory was 237.5 MB in the beginning and 235.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 448.57 ms. Allocated memory is still 304.1 MB. Free memory was 235.4 MB in the beginning and 206.4 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 52689.38 ms. Allocated memory was 304.1 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 206.4 MB in the beginning and 888.3 MB in the end (delta: -681.9 MB). Peak memory consumption was 2.6 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, 52.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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, 0.2s SatisfiabilityAnalysisTime, 25.0s 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-17-19-089.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-17-19-089.csv Completed graceful shutdown