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/cav12/bubblesort.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:01:19,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:01:19,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:01:19,839 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:01:19,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:01:19,840 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:01:19,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:01:19,846 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:01:19,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:01:19,849 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:01:19,850 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:01:19,850 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:01:19,851 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:01:19,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:01:19,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:01:19,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:01:19,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:01:19,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:01:19,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:01:19,871 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:01:19,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:01:19,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:01:19,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:01:19,877 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:01:19,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:01:19,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:01:19,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:01:19,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:01:19,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:01:19,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:01:19,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:01:19,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:01:19,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:01:19,889 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:01:19,890 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:01:19,890 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 14:01:19,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:01:19,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:01:19,913 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:01:19,913 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:01:19,914 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:01:19,914 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:01:19,914 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:01:19,915 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:01:19,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:01:19,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:01:19,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:01:19,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:01:19,918 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:01:19,918 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:01:19,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:01:19,919 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:01:19,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:01:19,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:01:19,919 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:01:19,922 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:01:19,923 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:01:19,964 INFO ]: Repository-Root is: /tmp [2018-06-22 14:01:19,983 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:01:19,989 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:01:19,990 INFO ]: Initializing SmtParser... [2018-06-22 14:01:19,991 INFO ]: SmtParser initialized [2018-06-22 14:01:19,992 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort.smt2 [2018-06-22 14:01:19,993 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 14:01:20,090 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort.smt2 unknown [2018-06-22 14:01:20,666 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort.smt2 [2018-06-22 14:01:20,671 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:01:20,687 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:01:20,688 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:01:20,688 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:01:20,688 INFO ]: ChcToBoogie initialized [2018-06-22 14:01:20,691 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,771 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20 Unit [2018-06-22 14:01:20,771 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:01:20,772 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:01:20,772 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:01:20,772 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:01:20,794 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,794 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,816 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,816 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,838 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,839 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,851 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (1/1) ... [2018-06-22 14:01:20,856 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:01:20,857 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:01:20,857 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:01:20,857 INFO ]: RCFGBuilder initialized [2018-06-22 14:01:20,858 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (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 14:01:20,880 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:01:20,880 INFO ]: Found specification of procedure False [2018-06-22 14:01:20,880 INFO ]: Found implementation of procedure False [2018-06-22 14:01:20,880 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:01:20,880 INFO ]: Found specification of procedure state [2018-06-22 14:01:20,880 INFO ]: Found implementation of procedure state [2018-06-22 14:01:20,880 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:01:20,880 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:01:20,881 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 14:01:21,287 INFO ]: Using library mode [2018-06-22 14:01:21,288 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:01:21 BoogieIcfgContainer [2018-06-22 14:01:21,288 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:01:21,289 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:01:21,290 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:01:21,294 INFO ]: TraceAbstraction initialized [2018-06-22 14:01:21,294 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:01:20" (1/3) ... [2018-06-22 14:01:21,295 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:01:21, skipping insertion in model container [2018-06-22 14:01:21,295 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:01:20" (2/3) ... [2018-06-22 14:01:21,296 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:01:21, skipping insertion in model container [2018-06-22 14:01:21,296 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:01:21" (3/3) ... [2018-06-22 14:01:21,298 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:01:21,308 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:01:21,320 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:01:21,371 INFO ]: Using default assertion order modulation [2018-06-22 14:01:21,371 INFO ]: Interprodecural is true [2018-06-22 14:01:21,371 INFO ]: Hoare is false [2018-06-22 14:01:21,371 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:01:21,371 INFO ]: Backedges is TWOTRACK [2018-06-22 14:01:21,371 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:01:21,371 INFO ]: Difference is false [2018-06-22 14:01:21,371 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:01:21,372 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:01:21,396 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:01:21,413 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:01:21,413 INFO ]: Found error trace [2018-06-22 14:01:21,414 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:01:21,415 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:01:21,420 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:01:21,423 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:01:21,423 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:01:21,473 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:21,473 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:01:21,473 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:21,536 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:21,717 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:01:21,727 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:01:21,727 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:01:21,729 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:01:21,745 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:01:21,746 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:01:21,747 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:01:21,876 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:01:21,876 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:01:21,877 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:01:21,878 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:01:21,878 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:01:21,888 INFO ]: With dead ends: 13 [2018-06-22 14:01:21,888 INFO ]: Without dead ends: 13 [2018-06-22 14:01:21,892 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 14:01:21,911 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:01:21,933 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:01:21,934 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:01:21,935 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:01:21,936 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:01:21,937 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:01:21,937 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:01:21,937 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:01:21,937 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:01:21,939 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:01:21,939 INFO ]: Found error trace [2018-06-22 14:01:21,939 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:01:21,939 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:01:21,939 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:01:21,939 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:01:21,939 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:01:21,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:21,940 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:01:21,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:22,121 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:22,430 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:01:22,555 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:01:22,555 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:01:22,555 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 14:01:22,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:01:22,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:22,678 INFO ]: Computing forward predicates... [2018-06-22 14:01:25,089 WARN ]: Spent 965.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-06-22 14:01:25,500 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-22 14:01:25,521 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:01:25,553 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:01:25,553 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:01:25,554 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:01:25,554 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:01:25,554 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:01:25,554 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:01:25,957 WARN ]: Spent 359.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2018-06-22 14:01:26,125 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2018-06-22 14:01:26,146 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:01:26,147 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:01:26,148 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:01:26,148 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:01:26,148 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:01:26,148 INFO ]: With dead ends: 15 [2018-06-22 14:01:26,148 INFO ]: Without dead ends: 15 [2018-06-22 14:01:26,149 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:01:26,149 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:01:26,152 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:01:26,152 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:01:26,152 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:01:26,153 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:01:26,153 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:01:26,153 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:01:26,153 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:01:26,153 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:01:26,153 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:01:26,153 INFO ]: Found error trace [2018-06-22 14:01:26,153 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:01:26,153 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:01:26,154 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:01:26,154 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:01:26,154 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:01:26,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:26,154 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:01:26,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:26,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:26,616 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:01:26,616 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:01:26,616 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 14:01:26,625 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:01:26,704 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:01:26,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:26,712 INFO ]: Computing forward predicates... [2018-06-22 14:01:29,833 WARN ]: Spent 1.92 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-06-22 14:01:30,819 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 14:01:30,852 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:01:30,852 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-06-22 14:01:30,852 INFO ]: Interpolant automaton has 12 states [2018-06-22 14:01:30,852 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 14:01:30,852 INFO ]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:01:30,852 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 14:01:31,296 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-06-22 14:01:31,316 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:01:31,317 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:01:31,317 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:01:31,317 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 14:01:31,317 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:01:31,318 INFO ]: With dead ends: 19 [2018-06-22 14:01:31,318 INFO ]: Without dead ends: 19 [2018-06-22 14:01:31,318 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:01:31,319 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:01:31,323 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:01:31,323 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:01:31,323 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:01:31,323 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 14:01:31,324 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:01:31,324 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:01:31,324 INFO ]: Interpolant automaton has 12 states. [2018-06-22 14:01:31,324 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:01:31,324 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:01:31,325 INFO ]: Found error trace [2018-06-22 14:01:31,325 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:01:31,325 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:01:31,325 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 3 times [2018-06-22 14:01:31,325 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:01:31,325 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:01:31,326 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:31,326 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:01:31,326 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:01:31,531 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:31,983 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 14:01:32,741 WARN ]: Spent 708.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2018-06-22 14:01:33,020 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:01:33,021 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:01:33,021 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:01:33,030 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:01:33,156 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 14:01:33,156 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:01:33,167 INFO ]: Computing forward predicates... [2018-06-22 14:01:40,509 WARN ]: Spent 4.68 s on a formula simplification. DAG size of input: 466 DAG size of output: 55 Received shutdown request... [2018-06-22 14:02:26,206 WARN ]: Removed 2206 from assertion stack [2018-06-22 14:02:26,206 INFO ]: Timeout while computing interpolants [2018-06-22 14:02:26,407 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:02:26,407 WARN ]: Verification canceled [2018-06-22 14:02:26,413 WARN ]: Timeout [2018-06-22 14:02:26,414 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:02:26 BoogieIcfgContainer [2018-06-22 14:02:26,414 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:02:26,414 INFO ]: Toolchain (without parser) took 65743.35 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 236.5 MB in the beginning and 631.8 MB in the end (delta: -395.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:02:26,418 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:02:26,418 INFO ]: ChcToBoogie took 83.49 ms. Allocated memory is still 303.0 MB. Free memory was 236.5 MB in the beginning and 234.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:02:26,418 INFO ]: Boogie Preprocessor took 84.55 ms. Allocated memory is still 303.0 MB. Free memory was 234.5 MB in the beginning and 232.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:02:26,419 INFO ]: RCFGBuilder took 431.67 ms. Allocated memory is still 303.0 MB. Free memory was 232.5 MB in the beginning and 205.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:02:26,419 INFO ]: TraceAbstraction took 65124.23 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 205.5 MB in the beginning and 631.8 MB in the end (delta: -426.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:02:26,426 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 83.49 ms. Allocated memory is still 303.0 MB. Free memory was 236.5 MB in the beginning and 234.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.55 ms. Allocated memory is still 303.0 MB. Free memory was 234.5 MB in the beginning and 232.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 431.67 ms. Allocated memory is still 303.0 MB. Free memory was 232.5 MB in the beginning and 205.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65124.23 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 205.5 MB in the beginning and 631.8 MB in the end (delta: -426.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2950. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 65.0s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 23 SDslu, 64 SDs, 0 SdLazy, 53 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 10880 SizeOfPredicates, 269 NumberOfNonLiveVariables, 434 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 9/26 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-02-26-440.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-02-26-440.csv Completed graceful shutdown