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_e2_943.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:28:43,108 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:28:43,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:28:43,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:28:43,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:28:43,129 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:28:43,131 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:28:43,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:28:43,135 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:28:43,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:28:43,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:28:43,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:28:43,139 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:28:43,143 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:28:43,144 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:28:43,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:28:43,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:28:43,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:28:43,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:28:43,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:28:43,160 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:28:43,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:28:43,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:28:43,169 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:28:43,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:28:43,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:28:43,171 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:28:43,175 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:28:43,176 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:28:43,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:28:43,177 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:28:43,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:28:43,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:28:43,182 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:28:43,183 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:28:43,183 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:28:43,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:28:43,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:28:43,207 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:28:43,207 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:28:43,208 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:28:43,208 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:28:43,208 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:28:43,208 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:28:43,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:28:43,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:28:43,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:28:43,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:28:43,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:28:43,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:28:43,210 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:28:43,213 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:28:43,215 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:28:43,215 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:28:43,261 INFO ]: Repository-Root is: /tmp [2018-06-25 16:28:43,280 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:28:43,283 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:28:43,289 INFO ]: Initializing SmtParser... [2018-06-25 16:28:43,289 INFO ]: SmtParser initialized [2018-06-25 16:28:43,289 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-25 16:28:43,290 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 16:28:43,391 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 unknown [2018-06-25 16:28:43,857 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e2_943.smt2 [2018-06-25 16:28:43,862 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:28:43,873 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:28:43,873 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:28:43,873 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:28:43,873 INFO ]: ChcToBoogie initialized [2018-06-25 16:28:43,877 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:43,962 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43 Unit [2018-06-25 16:28:43,962 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:28:43,963 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:28:43,963 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:28:43,963 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:28:43,983 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:43,984 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,005 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,005 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,011 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,022 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,024 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (1/1) ... [2018-06-25 16:28:44,035 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:28:44,035 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:28:44,035 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:28:44,035 INFO ]: RCFGBuilder initialized [2018-06-25 16:28:44,036 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (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 16:28:44,053 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:28:44,053 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:28:44,053 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:28:44,053 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:28:44,053 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:28:44,053 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 16:28:44,442 INFO ]: Using library mode [2018-06-25 16:28:44,442 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:28:44 BoogieIcfgContainer [2018-06-25 16:28:44,442 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:28:44,445 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:28:44,445 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:28:44,448 INFO ]: TraceAbstraction initialized [2018-06-25 16:28:44,449 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:28:43" (1/3) ... [2018-06-25 16:28:44,449 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c0e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:28:44, skipping insertion in model container [2018-06-25 16:28:44,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:43" (2/3) ... [2018-06-25 16:28:44,450 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4c0e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:28:44, skipping insertion in model container [2018-06-25 16:28:44,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:28:44" (3/3) ... [2018-06-25 16:28:44,452 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:28:44,462 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:28:44,473 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:28:44,524 INFO ]: Using default assertion order modulation [2018-06-25 16:28:44,525 INFO ]: Interprodecural is true [2018-06-25 16:28:44,525 INFO ]: Hoare is false [2018-06-25 16:28:44,525 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:28:44,525 INFO ]: Backedges is TWOTRACK [2018-06-25 16:28:44,525 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:28:44,525 INFO ]: Difference is false [2018-06-25 16:28:44,525 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:28:44,525 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:28:44,542 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:28:44,557 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:28:44,557 INFO ]: Found error trace [2018-06-25 16:28:44,560 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:44,561 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:44,566 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:28:44,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:44,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:44,616 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:44,616 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:44,616 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:44,735 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:44,868 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:44,869 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:28:44,870 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:28:44,871 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:28:44,883 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:28:44,883 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:28:44,887 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:28:44,962 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:44,963 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:28:44,965 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:28:44,967 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:28:44,967 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:44,978 INFO ]: With dead ends: 9 [2018-06-25 16:28:44,978 INFO ]: Without dead ends: 9 [2018-06-25 16:28:44,980 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 16:28:44,998 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:28:45,027 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:28:45,028 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:28:45,029 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:28:45,030 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:28:45,031 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:45,031 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:28:45,031 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:28:45,031 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:28:45,031 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:28:45,031 INFO ]: Found error trace [2018-06-25 16:28:45,031 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:45,031 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:45,031 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:28:45,031 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:45,031 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:45,032 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:45,032 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:45,032 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:45,142 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:45,238 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:45,238 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:45,238 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 16:28:45,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:45,426 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:45,437 INFO ]: Computing forward predicates... [2018-06-25 16:28:45,601 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:45,637 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:28:45,637 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:28:45,638 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:28:45,638 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:28:45,638 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:28:45,638 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:28:45,749 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:45,750 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:28:45,750 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:28:45,751 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:28:45,751 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:45,751 INFO ]: With dead ends: 10 [2018-06-25 16:28:45,751 INFO ]: Without dead ends: 10 [2018-06-25 16:28:45,752 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:28:45,752 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:28:45,753 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:28:45,753 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:28:45,753 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:28:45,753 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:28:45,753 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:45,753 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:28:45,753 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:28:45,753 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:28:45,754 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:28:45,754 INFO ]: Found error trace [2018-06-25 16:28:45,754 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:45,754 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:45,754 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 16:28:45,754 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:45,754 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:45,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:45,756 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:45,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:45,881 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:46,059 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:46,059 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:46,059 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 [2018-06-25 16:28:46,066 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:28:46,240 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:28:46,240 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:46,248 INFO ]: Computing forward predicates... [2018-06-25 16:28:46,611 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:46,633 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:28:46,633 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 16:28:46,633 INFO ]: Interpolant automaton has 8 states [2018-06-25 16:28:46,633 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 16:28:46,633 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-25 16:28:46,634 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 16:28:46,931 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:46,931 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:28:46,932 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:28:46,932 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 16:28:46,932 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:46,932 INFO ]: With dead ends: 11 [2018-06-25 16:28:46,932 INFO ]: Without dead ends: 11 [2018-06-25 16:28:46,933 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:28:46,933 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:28:46,934 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:28:46,934 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:28:46,934 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:28:46,935 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 16:28:46,935 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:46,935 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:28:46,935 INFO ]: Interpolant automaton has 8 states. [2018-06-25 16:28:46,935 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:28:46,935 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:28:46,935 INFO ]: Found error trace [2018-06-25 16:28:46,935 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:46,935 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:46,935 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-25 16:28:46,935 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:46,935 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:46,937 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:46,937 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:28:46,937 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:47,051 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:47,431 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:47,431 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:47,431 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 16:28:47,437 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:28:47,649 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 16:28:47,650 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:47,659 INFO ]: Computing forward predicates... [2018-06-25 16:28:47,972 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:48,739 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:28:49,315 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:49,709 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:28:50,431 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:50,912 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:51,372 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:28:51,721 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:28:51,916 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:30:03,709 INFO ]: Timeout while computing interpolants [2018-06-25 16:30:03,909 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:30:03,909 WARN ]: Verification canceled [2018-06-25 16:30:03,914 WARN ]: Timeout [2018-06-25 16:30:03,914 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:30:03 BoogieIcfgContainer [2018-06-25 16:30:03,914 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:30:03,915 INFO ]: Toolchain (without parser) took 80052.79 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.7 MB in the beginning and 755.1 MB in the end (delta: -504.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 16:30:03,917 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:30:03,917 INFO ]: ChcToBoogie took 89.61 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 246.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:30:03,918 INFO ]: Boogie Preprocessor took 71.56 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 245.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 16:30:03,918 INFO ]: RCFGBuilder took 407.40 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 212.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:30:03,918 INFO ]: TraceAbstraction took 79469.22 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.7 MB in the beginning and 755.1 MB in the end (delta: -542.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 16:30:03,930 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.61 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 246.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 71.56 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 245.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 407.40 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 212.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79469.22 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.7 MB in the beginning and 755.1 MB in the end (delta: -542.4 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 DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 79.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 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/metros_1_e2_1102_e2_943.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-30-03-942.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e2_943.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-30-03-942.csv Completed graceful shutdown