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/ctigar/NetBSD_glob3_iny.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:46:09,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:46:09,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:46:09,015 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:46:09,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:46:09,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:46:09,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:46:09,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:46:09,023 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:46:09,024 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:46:09,025 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:46:09,025 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:46:09,026 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:46:09,027 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:46:09,028 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:46:09,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:46:09,030 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:46:09,032 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:46:09,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:46:09,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:46:09,036 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:46:09,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:46:09,039 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:46:09,039 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:46:09,040 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:46:09,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:46:09,042 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:46:09,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:46:09,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:46:09,044 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:46:09,045 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:46:09,046 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:46:09,046 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:46:09,047 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:46:09,048 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:46:09,048 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:46:09,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:46:09,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:46:09,072 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:46:09,072 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:46:09,074 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:46:09,074 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:46:09,074 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:46:09,074 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:46:09,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:46:09,075 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:46:09,075 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:46:09,075 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:46:09,075 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:46:09,075 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:46:09,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:46:09,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:46:09,078 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:46:09,080 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:46:09,080 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:46:09,122 INFO ]: Repository-Root is: /tmp [2018-06-22 05:46:09,139 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:46:09,145 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:46:09,146 INFO ]: Initializing SmtParser... [2018-06-22 05:46:09,146 INFO ]: SmtParser initialized [2018-06-22 05:46:09,147 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_glob3_iny.c.smt2 [2018-06-22 05:46:09,149 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 05:46:09,248 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_glob3_iny.c.smt2 unknown [2018-06-22 05:46:09,728 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_glob3_iny.c.smt2 [2018-06-22 05:46:09,733 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:46:09,739 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:46:09,740 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:46:09,740 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:46:09,740 INFO ]: ChcToBoogie initialized [2018-06-22 05:46:09,743 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,794 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09 Unit [2018-06-22 05:46:09,794 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:46:09,794 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:46:09,794 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:46:09,794 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:46:09,815 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,815 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,833 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,833 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,851 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,853 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,856 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (1/1) ... [2018-06-22 05:46:09,868 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:46:09,869 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:46:09,869 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:46:09,869 INFO ]: RCFGBuilder initialized [2018-06-22 05:46:09,870 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (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 05:46:09,886 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:46:09,886 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:46:09,887 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:46:09,887 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:46:09,887 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:46:09,887 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 05:46:10,233 INFO ]: Using library mode [2018-06-22 05:46:10,233 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:46:10 BoogieIcfgContainer [2018-06-22 05:46:10,233 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:46:10,235 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:46:10,235 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:46:10,238 INFO ]: TraceAbstraction initialized [2018-06-22 05:46:10,238 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:46:09" (1/3) ... [2018-06-22 05:46:10,239 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac4d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:46:10, skipping insertion in model container [2018-06-22 05:46:10,239 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:46:09" (2/3) ... [2018-06-22 05:46:10,239 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bac4d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:46:10, skipping insertion in model container [2018-06-22 05:46:10,239 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:46:10" (3/3) ... [2018-06-22 05:46:10,241 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:46:10,250 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:46:10,258 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:46:10,294 INFO ]: Using default assertion order modulation [2018-06-22 05:46:10,295 INFO ]: Interprodecural is true [2018-06-22 05:46:10,295 INFO ]: Hoare is false [2018-06-22 05:46:10,295 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:46:10,295 INFO ]: Backedges is TWOTRACK [2018-06-22 05:46:10,295 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:46:10,295 INFO ]: Difference is false [2018-06-22 05:46:10,295 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:46:10,295 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:46:10,313 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:46:10,325 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:46:10,325 INFO ]: Found error trace [2018-06-22 05:46:10,330 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:46:10,330 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:46:10,335 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:46:10,336 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:46:10,337 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:46:10,372 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:10,372 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:46:10,372 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:10,430 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:10,589 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:10,591 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:46:10,591 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:46:10,592 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:46:10,603 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:46:10,603 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:46:10,605 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:46:10,675 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:46:10,675 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:46:10,675 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:46:10,676 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:46:10,677 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:46:10,683 INFO ]: With dead ends: 9 [2018-06-22 05:46:10,683 INFO ]: Without dead ends: 9 [2018-06-22 05:46:10,685 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:46:10,698 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:46:10,711 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:46:10,713 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:46:10,714 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:46:10,715 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:46:10,715 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:46:10,715 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:46:10,715 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:46:10,715 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:46:10,715 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:46:10,715 INFO ]: Found error trace [2018-06-22 05:46:10,715 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:46:10,716 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:46:10,716 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:46:10,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:46:10,717 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:46:10,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:10,717 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:46:10,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:10,814 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:10,983 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:10,983 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:46:10,983 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) [2018-06-22 05:46:11,020 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:46:11,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:11,115 INFO ]: Computing forward predicates... [2018-06-22 05:46:11,812 WARN ]: Spent 304.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 4 [2018-06-22 05:46:12,700 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:12,721 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:46:12,721 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:46:12,722 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:46:12,722 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:46:12,722 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:46:12,722 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:46:12,979 WARN ]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 05:46:13,057 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:46:13,057 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:46:13,058 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:46:13,058 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:46:13,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:46:13,058 INFO ]: With dead ends: 10 [2018-06-22 05:46:13,058 INFO ]: Without dead ends: 10 [2018-06-22 05:46:13,059 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:46:13,059 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:46:13,060 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:46:13,060 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:46:13,060 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:46:13,060 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:46:13,061 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:46:13,061 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:46:13,061 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:46:13,061 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:46:13,061 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:46:13,061 INFO ]: Found error trace [2018-06-22 05:46:13,061 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:46:13,061 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:46:13,061 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:46:13,061 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:46:13,061 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:46:13,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:13,063 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:46:13,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:13,176 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:13,394 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:13,394 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:46:13,394 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 05:46:13,401 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:46:13,504 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:46:13,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:13,509 INFO ]: Computing forward predicates... [2018-06-22 05:46:14,106 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:46:16,732 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:46:26,960 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:26,994 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:46:26,994 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:46:26,994 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:46:26,994 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:46:26,994 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:46:26,994 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:46:27,352 WARN ]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 05:46:27,443 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:46:27,444 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:46:27,444 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:46:27,444 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:46:27,444 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:46:27,444 INFO ]: With dead ends: 11 [2018-06-22 05:46:27,444 INFO ]: Without dead ends: 11 [2018-06-22 05:46:27,445 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:46:27,445 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:46:27,446 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:46:27,446 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:46:27,446 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:46:27,446 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:46:27,446 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:46:27,446 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:46:27,446 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:46:27,446 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:46:27,447 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:46:27,447 INFO ]: Found error trace [2018-06-22 05:46:27,447 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:46:27,447 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:46:27,447 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 05:46:27,447 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:46:27,447 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:46:27,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:27,448 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:46:27,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:46:27,540 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:28,305 WARN ]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 05:46:28,421 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:46:28,421 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:46:28,421 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 05:46:28,441 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:46:28,543 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:46:28,543 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:46:28,548 INFO ]: Computing forward predicates... [2018-06-22 05:46:35,359 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:46:35,587 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:46:35,834 WARN ]: expecting exponential blowup for input size 7 Received shutdown request... [2018-06-22 05:47:17,806 INFO ]: Timeout while computing interpolants [2018-06-22 05:47:18,007 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:47:18,007 WARN ]: Verification canceled [2018-06-22 05:47:18,011 WARN ]: Timeout [2018-06-22 05:47:18,011 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:47:18 BoogieIcfgContainer [2018-06-22 05:47:18,011 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:47:18,012 INFO ]: Toolchain (without parser) took 68278.35 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.3 MB in the beginning and 230.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:47:18,013 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:47:18,013 INFO ]: ChcToBoogie took 54.37 ms. Allocated memory is still 306.7 MB. Free memory was 243.3 MB in the beginning and 241.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:47:18,013 INFO ]: Boogie Preprocessor took 73.83 ms. Allocated memory is still 306.7 MB. Free memory was 241.3 MB in the beginning and 239.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:47:18,014 INFO ]: RCFGBuilder took 364.41 ms. Allocated memory is still 306.7 MB. Free memory was 239.3 MB in the beginning and 220.3 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:47:18,014 INFO ]: TraceAbstraction took 67776.14 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 219.3 MB in the beginning and 230.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:47:18,021 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 306.7 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.37 ms. Allocated memory is still 306.7 MB. Free memory was 243.3 MB in the beginning and 241.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 73.83 ms. Allocated memory is still 306.7 MB. Free memory was 241.3 MB in the beginning and 239.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 364.41 ms. Allocated memory is still 306.7 MB. Free memory was 239.3 MB in the beginning and 220.3 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67776.14 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 219.3 MB in the beginning and 230.7 MB in the end (delta: -11.4 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 38414 quantified variables from 14 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 38 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.3s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1166 SizeOfPredicates, 12 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/NetBSD_glob3_iny.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-47-18-033.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/NetBSD_glob3_iny.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-47-18-033.csv Completed graceful shutdown