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-3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 13:59:09,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 13:59:09,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 13:59:09,871 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 13:59:09,872 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 13:59:09,873 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 13:59:09,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 13:59:09,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 13:59:09,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 13:59:09,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 13:59:09,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 13:59:09,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 13:59:09,884 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 13:59:09,887 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 13:59:09,888 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 13:59:09,889 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 13:59:09,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 13:59:09,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 13:59:09,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 13:59:09,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 13:59:09,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 13:59:09,909 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 13:59:09,909 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 13:59:09,909 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 13:59:09,914 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 13:59:09,915 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 13:59:09,915 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 13:59:09,917 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 13:59:09,918 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 13:59:09,918 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 13:59:09,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 13:59:09,920 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 13:59:09,920 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 13:59:09,920 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 13:59:09,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 13:59:09,926 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 13:59:09,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 13:59:09,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 13:59:09,949 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 13:59:09,949 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 13:59:09,950 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 13:59:09,950 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 13:59:09,950 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 13:59:09,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 13:59:09,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 13:59:09,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 13:59:09,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 13:59:09,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 13:59:09,951 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 13:59:09,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 13:59:09,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 13:59:09,952 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 13:59:09,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 13:59:09,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 13:59:09,953 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 13:59:09,954 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 13:59:09,954 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 13:59:10,003 INFO ]: Repository-Root is: /tmp [2018-06-22 13:59:10,019 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 13:59:10,023 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 13:59:10,025 INFO ]: Initializing SmtParser... [2018-06-22 13:59:10,025 INFO ]: SmtParser initialized [2018-06-22 13:59:10,026 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-3.smt2 [2018-06-22 13:59:10,027 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 13:59:10,104 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-3.smt2 unknown [2018-06-22 13:59:10,597 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/bubblesort-3.smt2 [2018-06-22 13:59:10,602 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 13:59:10,608 INFO ]: Walking toolchain with 4 elements. [2018-06-22 13:59:10,608 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 13:59:10,608 INFO ]: Initializing ChcToBoogie... [2018-06-22 13:59:10,608 INFO ]: ChcToBoogie initialized [2018-06-22 13:59:10,612 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,668 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10 Unit [2018-06-22 13:59:10,669 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 13:59:10,669 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 13:59:10,669 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 13:59:10,669 INFO ]: Boogie Preprocessor initialized [2018-06-22 13:59:10,719 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,722 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,739 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,739 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,767 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,768 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,783 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (1/1) ... [2018-06-22 13:59:10,788 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 13:59:10,788 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 13:59:10,788 INFO ]: Initializing RCFGBuilder... [2018-06-22 13:59:10,788 INFO ]: RCFGBuilder initialized [2018-06-22 13:59:10,789 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (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 13:59:10,818 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 13:59:10,818 INFO ]: Found specification of procedure False [2018-06-22 13:59:10,818 INFO ]: Found implementation of procedure False [2018-06-22 13:59:10,818 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 13:59:10,818 INFO ]: Found specification of procedure state [2018-06-22 13:59:10,818 INFO ]: Found implementation of procedure state [2018-06-22 13:59:10,818 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 13:59:10,818 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 13:59:10,818 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 13:59:11,133 INFO ]: Using library mode [2018-06-22 13:59:11,135 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:59:11 BoogieIcfgContainer [2018-06-22 13:59:11,135 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 13:59:11,137 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 13:59:11,137 INFO ]: Initializing TraceAbstraction... [2018-06-22 13:59:11,143 INFO ]: TraceAbstraction initialized [2018-06-22 13:59:11,143 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:59:10" (1/3) ... [2018-06-22 13:59:11,144 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ae8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:59:11, skipping insertion in model container [2018-06-22 13:59:11,144 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:59:10" (2/3) ... [2018-06-22 13:59:11,144 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ae8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:59:11, skipping insertion in model container [2018-06-22 13:59:11,144 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:59:11" (3/3) ... [2018-06-22 13:59:11,147 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 13:59:11,157 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 13:59:11,167 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 13:59:11,221 INFO ]: Using default assertion order modulation [2018-06-22 13:59:11,222 INFO ]: Interprodecural is true [2018-06-22 13:59:11,222 INFO ]: Hoare is false [2018-06-22 13:59:11,222 INFO ]: Compute interpolants for FPandBP [2018-06-22 13:59:11,222 INFO ]: Backedges is TWOTRACK [2018-06-22 13:59:11,222 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 13:59:11,222 INFO ]: Difference is false [2018-06-22 13:59:11,222 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 13:59:11,222 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 13:59:11,241 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 13:59:11,257 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 13:59:11,257 INFO ]: Found error trace [2018-06-22 13:59:11,258 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:59:11,258 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:59:11,266 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 13:59:11,268 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:59:11,268 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:59:11,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:11,303 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:59:11,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:11,338 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:11,502 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 13:59:11,504 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 13:59:11,504 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 13:59:11,506 INFO ]: Interpolant automaton has 4 states [2018-06-22 13:59:11,519 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 13:59:11,520 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 13:59:11,521 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 13:59:11,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 13:59:11,652 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 13:59:11,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 13:59:11,654 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 13:59:11,655 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 13:59:11,667 INFO ]: With dead ends: 13 [2018-06-22 13:59:11,667 INFO ]: Without dead ends: 13 [2018-06-22 13:59:11,669 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 13:59:11,690 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 13:59:11,712 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 13:59:11,713 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 13:59:11,715 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 13:59:11,717 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 13:59:11,717 INFO ]: Finished accepts. word is rejected. [2018-06-22 13:59:11,717 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 13:59:11,717 INFO ]: Interpolant automaton has 4 states. [2018-06-22 13:59:11,717 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 13:59:11,718 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 13:59:11,719 INFO ]: Found error trace [2018-06-22 13:59:11,719 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:59:11,719 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:59:11,719 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 13:59:11,719 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:59:11,719 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:59:11,720 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:11,720 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:59:11,720 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:11,896 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:12,180 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 13:59:12,499 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 13:59:12,499 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 13:59:12,499 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 13:59:12,507 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:59:12,587 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:12,601 INFO ]: Computing forward predicates... [2018-06-22 13:59:14,915 WARN ]: Spent 669.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-06-22 13:59:15,083 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 13:59:15,104 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 13:59:15,105 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 13:59:15,105 INFO ]: Interpolant automaton has 10 states [2018-06-22 13:59:15,105 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 13:59:15,106 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 13:59:15,106 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 13:59:15,591 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2018-06-22 13:59:15,841 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2018-06-22 13:59:15,860 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 13:59:15,860 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 13:59:15,861 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 13:59:15,861 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 13:59:15,861 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 13:59:15,863 INFO ]: With dead ends: 15 [2018-06-22 13:59:15,863 INFO ]: Without dead ends: 15 [2018-06-22 13:59:15,863 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 13:59:15,864 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 13:59:15,866 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 13:59:15,866 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 13:59:15,866 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 13:59:15,867 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 13:59:15,867 INFO ]: Finished accepts. word is rejected. [2018-06-22 13:59:15,867 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 13:59:15,867 INFO ]: Interpolant automaton has 10 states. [2018-06-22 13:59:15,867 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 13:59:15,867 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 13:59:15,867 INFO ]: Found error trace [2018-06-22 13:59:15,867 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:59:15,867 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:59:15,867 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 13:59:15,867 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:59:15,867 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:59:15,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:15,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 13:59:15,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:15,963 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:16,180 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 13:59:16,180 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 13:59:16,180 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 13:59:16,199 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 13:59:16,291 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 13:59:16,291 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:16,300 INFO ]: Computing forward predicates... [2018-06-22 13:59:18,115 WARN ]: Spent 474.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-06-22 13:59:19,862 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 13:59:20,579 WARN ]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 13:59:20,597 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 13:59:20,631 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 13:59:20,631 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-06-22 13:59:20,631 INFO ]: Interpolant automaton has 12 states [2018-06-22 13:59:20,631 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 13:59:20,631 INFO ]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-06-22 13:59:20,631 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 13:59:21,396 WARN ]: Spent 421.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-06-22 13:59:21,794 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-06-22 13:59:21,813 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 13:59:21,813 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 13:59:21,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 13:59:21,814 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 13:59:21,815 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 13:59:21,815 INFO ]: With dead ends: 19 [2018-06-22 13:59:21,815 INFO ]: Without dead ends: 19 [2018-06-22 13:59:21,815 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-06-22 13:59:21,816 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 13:59:21,818 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 13:59:21,818 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 13:59:21,819 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 13:59:21,819 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 13:59:21,819 INFO ]: Finished accepts. word is rejected. [2018-06-22 13:59:21,819 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 13:59:21,819 INFO ]: Interpolant automaton has 12 states. [2018-06-22 13:59:21,819 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 13:59:21,820 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 13:59:21,820 INFO ]: Found error trace [2018-06-22 13:59:21,820 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 13:59:21,820 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 13:59:21,820 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 3 times [2018-06-22 13:59:21,820 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 13:59:21,820 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 13:59:21,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:21,821 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 13:59:21,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 13:59:22,073 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:22,559 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 13:59:22,875 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2018-06-22 13:59:23,274 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 13:59:23,274 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 13:59:23,274 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 13:59:23,287 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 13:59:23,459 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 13:59:23,459 INFO ]: Conjunction of SSA is unsat [2018-06-22 13:59:23,474 INFO ]: Computing forward predicates... [2018-06-22 13:59:31,878 WARN ]: Spent 4.94 s on a formula simplification. DAG size of input: 466 DAG size of output: 55 Received shutdown request... [2018-06-22 14:00:14,206 WARN ]: Removed 2344 from assertion stack [2018-06-22 14:00:14,207 INFO ]: Timeout while computing interpolants [2018-06-22 14:00:14,407 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:00:14,407 WARN ]: Verification canceled [2018-06-22 14:00:14,412 WARN ]: Timeout [2018-06-22 14:00:14,412 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:00:14 BoogieIcfgContainer [2018-06-22 14:00:14,412 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:00:14,413 INFO ]: Toolchain (without parser) took 63811.04 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.7 MB in the beginning and 577.5 MB in the end (delta: -335.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:00:14,414 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:00:14,414 INFO ]: ChcToBoogie took 60.67 ms. Allocated memory is still 308.3 MB. Free memory was 241.7 MB in the beginning and 239.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:00:14,415 INFO ]: Boogie Preprocessor took 118.29 ms. Allocated memory is still 308.3 MB. Free memory was 239.7 MB in the beginning and 237.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:00:14,415 INFO ]: RCFGBuilder took 347.26 ms. Allocated memory is still 308.3 MB. Free memory was 237.7 MB in the beginning and 210.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:00:14,415 INFO ]: TraceAbstraction took 63275.57 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 210.7 MB in the beginning and 577.5 MB in the end (delta: -366.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:00:14,418 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 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.67 ms. Allocated memory is still 308.3 MB. Free memory was 241.7 MB in the beginning and 239.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 118.29 ms. Allocated memory is still 308.3 MB. Free memory was 239.7 MB in the beginning and 237.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 347.26 ms. Allocated memory is still 308.3 MB. Free memory was 237.7 MB in the beginning and 210.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63275.57 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 210.7 MB in the beginning and 577.5 MB in the end (delta: -366.8 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, 63.2s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 23 SDslu, 64 SDs, 0 SdLazy, 53 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.6s 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, 7.7s 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-3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-00-14-427.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort-3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-00-14-427.csv Completed graceful shutdown