java -Xss4m -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/lustre/metros_1_e2_1102_e7_1163.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:30:07,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:30:07,024 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:30:07,036 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:30:07,036 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:30:07,037 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:30:07,038 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:30:07,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:30:07,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:30:07,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:30:07,043 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:30:07,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:30:07,045 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:30:07,046 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:30:07,047 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:30:07,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:30:07,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:30:07,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:30:07,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:30:07,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:30:07,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:30:07,058 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:30:07,059 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:30:07,059 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:30:07,060 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:30:07,061 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:30:07,062 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:30:07,063 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:30:07,064 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:30:07,064 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:30:07,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:30:07,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:30:07,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:30:07,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:30:07,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:30:07,068 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:30:07,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:30:07,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:30:07,084 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:30:07,084 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:30:07,085 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:30:07,085 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:30:07,085 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:30:07,086 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:30:07,086 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:30:07,086 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:30:07,087 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:30:07,087 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:30:07,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:30:07,087 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:30:07,088 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:30:07,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:30:07,088 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:30:07,088 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:30:07,089 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:30:07,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:30:07,089 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:30:07,091 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:30:07,091 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:30:07,134 INFO ]: Repository-Root is: /tmp [2018-06-25 16:30:07,153 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:30:07,160 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:30:07,162 INFO ]: Initializing SmtParser... [2018-06-25 16:30:07,162 INFO ]: SmtParser initialized [2018-06-25 16:30:07,163 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-25 16:30:07,164 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 [2018-06-25 16:30:07,260 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 unknown [2018-06-25 16:30:07,728 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-25 16:30:07,732 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:30:07,739 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:30:07,739 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:30:07,739 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:30:07,739 INFO ]: ChcToBoogie initialized [2018-06-25 16:30:07,750 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,850 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07 Unit [2018-06-25 16:30:07,850 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:30:07,850 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:30:07,850 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:30:07,850 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:30:07,866 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,866 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,876 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,876 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,889 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,891 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,893 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (1/1) ... [2018-06-25 16:30:07,896 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:30:07,897 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:30:07,897 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:30:07,897 INFO ]: RCFGBuilder initialized [2018-06-25 16:30:07,898 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (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) [2018-06-25 16:30:07,911 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:30:07,911 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:30:07,911 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:30:07,911 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:30:07,911 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:30:07,911 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 [2018-06-25 16:30:08,348 INFO ]: Using library mode [2018-06-25 16:30:08,349 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:30:08 BoogieIcfgContainer [2018-06-25 16:30:08,349 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:30:08,351 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:30:08,351 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:30:08,355 INFO ]: TraceAbstraction initialized [2018-06-25 16:30:08,356 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:30:07" (1/3) ... [2018-06-25 16:30:08,357 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db478cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:30:08, skipping insertion in model container [2018-06-25 16:30:08,357 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:30:07" (2/3) ... [2018-06-25 16:30:08,357 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db478cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:30:08, skipping insertion in model container [2018-06-25 16:30:08,357 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:30:08" (3/3) ... [2018-06-25 16:30:08,360 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:30:08,369 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:30:08,380 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:30:08,436 INFO ]: Using default assertion order modulation [2018-06-25 16:30:08,436 INFO ]: Interprodecural is true [2018-06-25 16:30:08,436 INFO ]: Hoare is false [2018-06-25 16:30:08,436 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:30:08,436 INFO ]: Backedges is TWOTRACK [2018-06-25 16:30:08,436 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:30:08,437 INFO ]: Difference is false [2018-06-25 16:30:08,437 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:30:08,437 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:30:08,453 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:30:08,468 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:30:08,468 INFO ]: Found error trace [2018-06-25 16:30:08,471 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:30:08,472 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:30:08,478 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 16:30:08,481 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:30:08,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:30:08,529 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:08,529 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:30:08,529 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:08,679 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:08,805 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:08,809 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:30:08,810 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:30:08,811 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:30:08,822 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:30:08,822 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:30:08,825 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:30:08,914 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:30:08,914 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:30:08,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:30:08,916 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:30:08,916 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:30:08,927 INFO ]: With dead ends: 9 [2018-06-25 16:30:08,927 INFO ]: Without dead ends: 9 [2018-06-25 16:30:08,929 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:30:08,947 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:30:08,977 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:30:08,978 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:30:08,979 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:30:08,980 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:30:08,981 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:30:08,981 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:30:08,981 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:30:08,981 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:30:08,981 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:30:08,981 INFO ]: Found error trace [2018-06-25 16:30:08,981 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:30:08,981 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:30:08,981 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 16:30:08,981 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:30:08,981 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:30:08,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:08,982 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:30:08,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:09,077 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:09,287 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:09,287 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:30:09,287 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 [2018-06-25 16:30:09,296 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:30:09,476 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:09,486 INFO ]: Computing forward predicates... [2018-06-25 16:30:09,565 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:09,593 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:30:09,593 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:30:09,593 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:30:09,594 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:30:09,594 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:30:09,594 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:30:09,708 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:30:09,708 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:30:09,709 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:30:09,709 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:30:09,709 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:30:09,710 INFO ]: With dead ends: 10 [2018-06-25 16:30:09,710 INFO ]: Without dead ends: 10 [2018-06-25 16:30:09,710 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:30:09,710 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:30:09,711 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:30:09,711 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:30:09,712 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:30:09,712 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:30:09,712 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:30:09,712 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:30:09,712 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:30:09,712 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:30:09,712 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:30:09,712 INFO ]: Found error trace [2018-06-25 16:30:09,712 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:30:09,712 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:30:09,714 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 16:30:09,714 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:30:09,714 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:30:09,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:09,715 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:30:09,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:09,794 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:10,206 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:10,206 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:30:10,206 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) [2018-06-25 16:30:10,221 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:30:10,399 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:30:10,399 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:10,405 INFO ]: Computing forward predicates... [2018-06-25 16:30:10,963 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:10,984 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:30:10,984 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-25 16:30:10,984 INFO ]: Interpolant automaton has 7 states [2018-06-25 16:30:10,984 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 16:30:10,984 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-25 16:30:10,985 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-25 16:30:11,090 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:30:11,090 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:30:11,090 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:30:11,090 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-25 16:30:11,091 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:30:11,091 INFO ]: With dead ends: 11 [2018-06-25 16:30:11,091 INFO ]: Without dead ends: 11 [2018-06-25 16:30:11,091 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-25 16:30:11,091 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:30:11,092 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:30:11,092 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:30:11,093 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:30:11,093 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 16:30:11,093 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:30:11,093 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:30:11,093 INFO ]: Interpolant automaton has 7 states. [2018-06-25 16:30:11,093 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:30:11,093 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:30:11,093 INFO ]: Found error trace [2018-06-25 16:30:11,093 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:30:11,093 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:30:11,094 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 16:30:11,094 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:30:11,094 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:30:11,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:11,095 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:30:11,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:30:11,202 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:11,970 WARN ]: Spent 370.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-06-25 16:30:11,978 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:30:11,978 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:30:11,978 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 [2018-06-25 16:30:11,985 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:30:12,175 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 16:30:12,175 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:30:12,183 INFO ]: Computing forward predicates... [2018-06-25 16:30:12,788 WARN ]: expecting exponential blowup for input size 14 [2018-06-25 16:30:13,262 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... [2018-06-25 16:31:07,366 INFO ]: Simplified to disjunction of 20736 conjuctions. [2018-06-25 16:31:08,006 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 10 [2018-06-25 16:31:08,010 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:31:08,032 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:31:08,033 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:31:08,033 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:31:08,033 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:31:08,033 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:31:08,033 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:31:08,242 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:31:08,242 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 16:31:08,243 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 16:31:08,243 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:31:08,243 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:31:08,243 INFO ]: With dead ends: 13 [2018-06-25 16:31:08,243 INFO ]: Without dead ends: 13 [2018-06-25 16:31:08,244 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-06-25 16:31:08,244 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 16:31:08,245 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 16:31:08,245 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 16:31:08,246 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 16:31:08,246 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 16:31:08,246 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:31:08,246 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 16:31:08,246 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:31:08,246 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 16:31:08,246 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 16:31:08,246 INFO ]: Found error trace [2018-06-25 16:31:08,246 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:31:08,246 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:31:08,247 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-25 16:31:08,247 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:31:08,247 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:31:08,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:31:08,247 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:31:08,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:31:08,476 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:31:08,804 INFO ]: Checked inductivity of 15 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 16:31:08,804 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:31:08,804 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:31:08,810 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 16:31:09,086 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 16:31:09,086 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:31:09,098 INFO ]: Computing forward predicates... [2018-06-25 16:31:09,379 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 16:31:11,594 WARN ]: Simplifying disjunction of 110592 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:31:24,180 INFO ]: Timeout while computing interpolants [2018-06-25 16:31:24,381 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:31:24,381 WARN ]: Verification canceled [2018-06-25 16:31:24,390 WARN ]: Timeout [2018-06-25 16:31:24,390 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:31:24 BoogieIcfgContainer [2018-06-25 16:31:24,390 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:31:24,392 INFO ]: Toolchain (without parser) took 76658.81 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.7 MB in the beginning and 1.2 GB in the end (delta: -938.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:31:24,395 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:31:24,395 INFO ]: ChcToBoogie took 110.85 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 244.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:31:24,396 INFO ]: Boogie Preprocessor took 46.15 ms. Allocated memory is still 308.3 MB. Free memory is still 244.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:31:24,396 INFO ]: RCFGBuilder took 452.25 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 210.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:31:24,397 INFO ]: TraceAbstraction took 76039.81 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 1.2 GB in the end (delta: -976.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-25 16:31:24,401 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 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 110.85 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 244.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.15 ms. Allocated memory is still 308.3 MB. Free memory is still 244.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 452.25 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 210.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 76039.81 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 1.2 GB in the end (delta: -976.5 MB). Peak memory consumption was 1.0 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 110592 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 75.9s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 75 SDs, 0 SdLazy, 65 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 58.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1422 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2238 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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/metros_1_e2_1102_e7_1163.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-31-24-412.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e7_1163.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-31-24-412.csv Completed graceful shutdown