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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:16:50,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:16:50,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:16:50,402 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:16:50,402 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:16:50,403 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:16:50,404 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:16:50,408 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:16:50,410 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:16:50,411 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:16:50,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:16:50,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:16:50,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:16:50,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:16:50,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:16:50,419 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:16:50,421 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:16:50,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:16:50,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:16:50,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:16:50,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:16:50,439 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:16:50,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:16:50,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:16:50,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:16:50,441 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:16:50,442 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:16:50,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:16:50,443 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:16:50,444 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:16:50,444 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:16:50,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:16:50,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:16:50,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:16:50,446 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:16:50,447 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:16:50,462 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:16:50,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:16:50,465 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:16:50,465 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:16:50,466 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:16:50,466 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:16:50,466 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:16:50,466 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:16:50,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:16:50,467 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:16:50,467 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:16:50,467 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:16:50,467 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:16:50,467 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:16:50,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:16:50,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:16:50,471 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:16:50,472 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:16:50,472 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:16:50,521 INFO ]: Repository-Root is: /tmp [2018-06-22 04:16:50,534 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:16:50,537 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:16:50,541 INFO ]: Initializing SmtParser... [2018-06-22 04:16:50,542 INFO ]: SmtParser initialized [2018-06-22 04:16:50,542 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-2.smt2 [2018-06-22 04:16:50,543 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 04:16:50,638 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-2.smt2 unknown [2018-06-22 04:16:51,193 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-2.smt2 [2018-06-22 04:16:51,197 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:16:51,212 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:16:51,213 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:16:51,213 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:16:51,213 INFO ]: ChcToBoogie initialized [2018-06-22 04:16:51,223 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,322 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51 Unit [2018-06-22 04:16:51,322 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:16:51,323 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:16:51,323 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:16:51,323 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:16:51,344 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,345 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,356 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,357 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,375 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,377 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,380 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (1/1) ... [2018-06-22 04:16:51,384 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:16:51,385 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:16:51,385 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:16:51,385 INFO ]: RCFGBuilder initialized [2018-06-22 04:16:51,386 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (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) [2018-06-22 04:16:51,412 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:16:51,412 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:16:51,413 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:16:51,413 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:16:51,413 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:16:51,413 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:16:51,841 INFO ]: Using library mode [2018-06-22 04:16:51,841 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:16:51 BoogieIcfgContainer [2018-06-22 04:16:51,841 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:16:51,844 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:16:51,844 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:16:51,849 INFO ]: TraceAbstraction initialized [2018-06-22 04:16:51,849 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:16:51" (1/3) ... [2018-06-22 04:16:51,850 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f16c5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:16:51, skipping insertion in model container [2018-06-22 04:16:51,850 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:16:51" (2/3) ... [2018-06-22 04:16:51,851 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f16c5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:16:51, skipping insertion in model container [2018-06-22 04:16:51,851 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:16:51" (3/3) ... [2018-06-22 04:16:51,854 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:16:51,863 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:16:51,873 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:16:51,922 INFO ]: Using default assertion order modulation [2018-06-22 04:16:51,923 INFO ]: Interprodecural is true [2018-06-22 04:16:51,923 INFO ]: Hoare is false [2018-06-22 04:16:51,923 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:16:51,923 INFO ]: Backedges is TWOTRACK [2018-06-22 04:16:51,923 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:16:51,923 INFO ]: Difference is false [2018-06-22 04:16:51,923 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:16:51,923 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:16:51,940 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:16:51,954 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:16:51,954 INFO ]: Found error trace [2018-06-22 04:16:51,955 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:16:51,955 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:16:51,962 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:16:51,964 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:16:51,965 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:16:52,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:52,010 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:16:52,010 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:52,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:52,191 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:52,194 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:16:52,194 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:16:52,196 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:16:52,206 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:16:52,207 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:16:52,208 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:16:52,301 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:16:52,303 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:16:52,304 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:16:52,305 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:16:52,305 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:16:52,318 INFO ]: With dead ends: 9 [2018-06-22 04:16:52,318 INFO ]: Without dead ends: 9 [2018-06-22 04:16:52,320 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:16:52,338 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:16:52,365 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:16:52,367 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:16:52,367 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:16:52,372 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:16:52,372 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:16:52,372 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:16:52,372 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:16:52,372 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:16:52,372 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:16:52,372 INFO ]: Found error trace [2018-06-22 04:16:52,372 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:16:52,373 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:16:52,373 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:16:52,373 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:16:52,373 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:16:52,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:52,374 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:16:52,374 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:52,511 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:52,813 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:52,813 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:16:52,813 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 04:16:52,823 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:16:52,981 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:52,999 INFO ]: Computing forward predicates... [2018-06-22 04:16:53,923 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 4 [2018-06-22 04:16:53,941 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:53,976 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:16:53,976 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:16:53,977 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:16:53,977 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:16:53,977 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:16:53,977 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:16:54,104 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:16:54,105 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:16:54,105 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 04:16:54,105 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:16:54,105 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:16:54,106 INFO ]: With dead ends: 10 [2018-06-22 04:16:54,106 INFO ]: Without dead ends: 10 [2018-06-22 04:16:54,107 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:16:54,107 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:16:54,108 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:16:54,108 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:16:54,108 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:16:54,108 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:16:54,108 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:16:54,108 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:16:54,108 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:16:54,108 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:16:54,108 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:16:54,109 INFO ]: Found error trace [2018-06-22 04:16:54,109 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:16:54,110 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:16:54,111 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 04:16:54,111 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:16:54,111 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:16:54,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:54,112 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:16:54,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:54,276 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:54,571 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:54,571 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:16:54,571 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 04:16:54,577 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:16:54,693 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:16:54,694 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:54,703 INFO ]: Computing forward predicates... [2018-06-22 04:16:56,498 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:56,519 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:16:56,519 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 04:16:56,519 INFO ]: Interpolant automaton has 7 states [2018-06-22 04:16:56,519 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 04:16:56,519 INFO ]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:16:56,520 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 04:16:56,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:16:56,582 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:16:56,584 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:16:56,584 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 04:16:56,584 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:16:56,584 INFO ]: With dead ends: 12 [2018-06-22 04:16:56,584 INFO ]: Without dead ends: 12 [2018-06-22 04:16:56,584 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:16:56,585 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:16:56,586 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:16:56,586 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:16:56,586 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:16:56,586 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-22 04:16:56,586 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:16:56,586 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:16:56,586 INFO ]: Interpolant automaton has 7 states. [2018-06-22 04:16:56,586 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:16:56,587 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:16:56,587 INFO ]: Found error trace [2018-06-22 04:16:56,587 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:16:56,587 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:16:56,587 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 04:16:56,587 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:16:56,587 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:16:56,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:56,588 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:16:56,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:16:56,864 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:57,314 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2018-06-22 04:16:57,413 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:16:57,413 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:16:57,413 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) [2018-06-22 04:16:57,427 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:16:57,564 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:16:57,564 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:16:57,576 INFO ]: Computing forward predicates... [2018-06-22 04:17:13,177 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2018-06-22 04:17:24,402 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-06-22 04:17:24,731 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:17:24,753 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:17:24,753 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-22 04:17:24,753 INFO ]: Interpolant automaton has 11 states [2018-06-22 04:17:24,753 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 04:17:24,754 INFO ]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-06-22 04:17:24,754 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-22 04:17:24,906 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:17:24,906 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 04:17:24,906 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 04:17:24,906 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-22 04:17:24,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:17:24,907 INFO ]: With dead ends: 14 [2018-06-22 04:17:24,907 INFO ]: Without dead ends: 14 [2018-06-22 04:17:24,907 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:17:24,907 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 04:17:24,909 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 04:17:24,909 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 04:17:24,909 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 04:17:24,909 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-22 04:17:24,909 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:17:24,909 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 04:17:24,909 INFO ]: Interpolant automaton has 11 states. [2018-06-22 04:17:24,909 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 04:17:24,910 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 04:17:24,910 INFO ]: Found error trace [2018-06-22 04:17:24,910 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:17:24,910 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:17:24,910 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-22 04:17:24,910 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:17:24,910 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:17:24,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:17:24,910 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:17:24,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:17:25,260 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:17:25,763 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 04:17:26,108 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 10 [2018-06-22 04:17:26,312 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 15 [2018-06-22 04:17:26,413 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:17:26,413 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:17:26,413 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:17:26,421 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:17:26,591 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:17:26,591 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:17:26,601 INFO ]: Computing forward predicates... [2018-06-22 04:17:39,577 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2018-06-22 04:17:42,697 WARN ]: Spent 966.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 26 [2018-06-22 04:17:43,210 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 20 [2018-06-22 04:17:43,460 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:17:43,483 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:17:43,483 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-06-22 04:17:43,483 INFO ]: Interpolant automaton has 15 states [2018-06-22 04:17:43,483 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 04:17:43,483 INFO ]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2018-06-22 04:17:43,484 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2018-06-22 04:17:43,545 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:17:43,545 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 04:17:43,546 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 04:17:43,547 INFO ]: Start accepts. Automaton has 15 states. Word has length 13 [2018-06-22 04:17:43,547 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:17:43,547 INFO ]: With dead ends: 15 [2018-06-22 04:17:43,547 INFO ]: Without dead ends: 15 [2018-06-22 04:17:43,547 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2018-06-22 04:17:43,547 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 04:17:43,548 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 04:17:43,549 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 04:17:43,549 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 04:17:43,549 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-06-22 04:17:43,549 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:17:43,549 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 04:17:43,549 INFO ]: Interpolant automaton has 15 states. [2018-06-22 04:17:43,549 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 04:17:43,549 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 04:17:43,549 INFO ]: Found error trace [2018-06-22 04:17:43,549 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:17:43,549 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:17:43,549 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 5 times [2018-06-22 04:17:43,549 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:17:43,549 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:17:43,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:17:43,550 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:17:43,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:17:43,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:17:44,276 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 04:17:45,411 WARN ]: Spent 893.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2018-06-22 04:17:45,525 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:17:45,525 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:17:45,525 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:17:45,533 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 04:17:45,721 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 04:17:45,721 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:17:45,735 INFO ]: Computing forward predicates... [2018-06-22 04:17:46,973 WARN ]: Spent 466.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 29 [2018-06-22 04:17:50,366 WARN ]: Spent 1.71 s on a formula simplification. DAG size of input: 314 DAG size of output: 37 Received shutdown request... [2018-06-22 04:17:53,449 INFO ]: Timeout while computing interpolants [2018-06-22 04:17:53,698 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:17:53,698 WARN ]: Verification canceled [2018-06-22 04:17:53,702 WARN ]: Timeout [2018-06-22 04:17:53,703 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:17:53 BoogieIcfgContainer [2018-06-22 04:17:53,703 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:17:53,703 INFO ]: Toolchain (without parser) took 62505.49 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.4 MB in the beginning and 987.8 MB in the end (delta: -744.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:17:53,704 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:17:53,705 INFO ]: ChcToBoogie took 110.11 ms. Allocated memory is still 307.8 MB. Free memory was 243.4 MB in the beginning and 240.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:17:53,705 INFO ]: Boogie Preprocessor took 60.87 ms. Allocated memory is still 307.8 MB. Free memory was 240.4 MB in the beginning and 238.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:17:53,705 INFO ]: RCFGBuilder took 456.56 ms. Allocated memory is still 307.8 MB. Free memory was 238.4 MB in the beginning and 212.3 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:17:53,706 INFO ]: TraceAbstraction took 61858.27 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.3 MB in the beginning and 987.8 MB in the end (delta: -775.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:17:53,709 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 110.11 ms. Allocated memory is still 307.8 MB. Free memory was 243.4 MB in the beginning and 240.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.87 ms. Allocated memory is still 307.8 MB. Free memory was 240.4 MB in the beginning and 238.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 456.56 ms. Allocated memory is still 307.8 MB. Free memory was 238.4 MB in the beginning and 212.3 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61858.27 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.3 MB in the beginning and 987.8 MB in the end (delta: -775.4 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 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 2223 quantified variables from 20 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.7s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 3 SDslu, 108 SDs, 0 SdLazy, 49 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 49.2s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6035 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1588 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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/bubblesort-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-17-53-727.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-17-53-727.csv Completed graceful shutdown