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_2_e1_1116_e2_617.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:35:11,146 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:35:11,148 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:35:11,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:35:11,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:35:11,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:35:11,162 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:35:11,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:35:11,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:35:11,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:35:11,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:35:11,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:35:11,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:35:11,172 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:35:11,173 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:35:11,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:35:11,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:35:11,187 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:35:11,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:35:11,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:35:11,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:35:11,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:35:11,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:35:11,193 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:35:11,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:35:11,199 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:35:11,200 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:35:11,201 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:35:11,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:35:11,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:35:11,203 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:35:11,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:35:11,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:35:11,206 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:35:11,207 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:35:11,207 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:35:11,230 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:35:11,230 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:35:11,230 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:35:11,230 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:35:11,231 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:35:11,232 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:35:11,233 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:35:11,233 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:35:11,233 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:35:11,233 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:35:11,233 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:35:11,234 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:35:11,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:35:11,234 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:35:11,234 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:35:11,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:35:11,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:35:11,235 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:35:11,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:35:11,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:35:11,235 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:35:11,239 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:35:11,240 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:35:11,287 INFO ]: Repository-Root is: /tmp [2018-06-25 16:35:11,303 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:35:11,308 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:35:11,309 INFO ]: Initializing SmtParser... [2018-06-25 16:35:11,309 INFO ]: SmtParser initialized [2018-06-25 16:35:11,310 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e1_1116_e2_617.smt2 [2018-06-25 16:35:11,311 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 16:35:11,392 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e1_1116_e2_617.smt2 unknown [2018-06-25 16:35:11,865 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e1_1116_e2_617.smt2 [2018-06-25 16:35:11,869 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:35:11,883 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:35:11,884 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:35:11,884 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:35:11,884 INFO ]: ChcToBoogie initialized [2018-06-25 16:35:11,887 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:35:11" (1/1) ... [2018-06-25 16:35:12,005 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12 Unit [2018-06-25 16:35:12,005 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:35:12,006 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:35:12,006 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:35:12,006 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:35:12,028 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,028 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,037 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,038 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,055 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,057 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,059 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (1/1) ... [2018-06-25 16:35:12,062 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:35:12,063 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:35:12,063 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:35:12,063 INFO ]: RCFGBuilder initialized [2018-06-25 16:35:12,063 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (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 16:35:12,082 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:35:12,082 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:35:12,082 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:35:12,082 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:35:12,082 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:35:12,082 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 16:35:12,509 INFO ]: Using library mode [2018-06-25 16:35:12,509 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:35:12 BoogieIcfgContainer [2018-06-25 16:35:12,509 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:35:12,510 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:35:12,510 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:35:12,514 INFO ]: TraceAbstraction initialized [2018-06-25 16:35:12,515 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:35:11" (1/3) ... [2018-06-25 16:35:12,515 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c7fc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:35:12, skipping insertion in model container [2018-06-25 16:35:12,515 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:35:12" (2/3) ... [2018-06-25 16:35:12,516 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c7fc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:35:12, skipping insertion in model container [2018-06-25 16:35:12,516 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:35:12" (3/3) ... [2018-06-25 16:35:12,518 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:35:12,527 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:35:12,535 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:35:12,588 INFO ]: Using default assertion order modulation [2018-06-25 16:35:12,588 INFO ]: Interprodecural is true [2018-06-25 16:35:12,588 INFO ]: Hoare is false [2018-06-25 16:35:12,588 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:35:12,588 INFO ]: Backedges is TWOTRACK [2018-06-25 16:35:12,588 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:35:12,588 INFO ]: Difference is false [2018-06-25 16:35:12,588 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:35:12,588 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:35:12,604 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:35:12,620 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:35:12,620 INFO ]: Found error trace [2018-06-25 16:35:12,621 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:35:12,621 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:35:12,626 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:35:12,629 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:35:12,629 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:35:12,663 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:12,663 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:35:12,663 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:12,781 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:12,948 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:12,951 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:35:12,951 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:35:12,953 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:35:12,968 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:35:12,969 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:35:12,971 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:35:13,065 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:35:13,066 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:35:13,066 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:35:13,068 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:35:13,068 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:35:13,081 INFO ]: With dead ends: 9 [2018-06-25 16:35:13,081 INFO ]: Without dead ends: 9 [2018-06-25 16:35:13,083 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 16:35:13,103 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:35:13,132 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:35:13,133 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:35:13,133 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:35:13,135 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:35:13,135 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:35:13,135 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:35:13,135 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:35:13,135 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:35:13,135 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:35:13,135 INFO ]: Found error trace [2018-06-25 16:35:13,135 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:35:13,135 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:35:13,135 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:35:13,136 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:35:13,136 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:35:13,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:13,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:35:13,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:13,252 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:13,397 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:13,397 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:35:13,397 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 16:35:13,404 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:35:13,581 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:13,592 INFO ]: Computing forward predicates... [2018-06-25 16:35:13,903 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:13,937 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:35:13,937 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:35:13,937 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:35:13,937 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:35:13,937 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:35:13,938 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:35:14,113 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:35:14,114 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:35:14,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:35:14,115 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:35:14,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:35:14,115 INFO ]: With dead ends: 11 [2018-06-25 16:35:14,115 INFO ]: Without dead ends: 11 [2018-06-25 16:35:14,116 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:35:14,116 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:35:14,117 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:35:14,117 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:35:14,117 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:35:14,117 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 16:35:14,118 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:35:14,118 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:35:14,118 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:35:14,118 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:35:14,118 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:35:14,118 INFO ]: Found error trace [2018-06-25 16:35:14,118 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:35:14,118 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:35:14,118 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 16:35:14,118 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:35:14,118 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:35:14,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:14,121 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:35:14,121 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:14,282 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:14,921 WARN ]: Spent 382.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2018-06-25 16:35:15,004 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:15,004 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:35:15,004 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 16:35:15,013 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:35:15,245 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:35:15,245 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:15,253 INFO ]: Computing forward predicates... [2018-06-25 16:35:16,080 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-06-25 16:35:16,084 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:16,112 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:35:16,112 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:35:16,113 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:35:16,113 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:35:16,113 INFO ]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:35:16,113 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:35:16,264 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2018-06-25 16:35:16,460 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:35:16,460 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-25 16:35:16,461 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 16:35:16,461 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:35:16,461 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:35:16,461 INFO ]: With dead ends: 14 [2018-06-25 16:35:16,461 INFO ]: Without dead ends: 14 [2018-06-25 16:35:16,462 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-06-25 16:35:16,462 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 16:35:16,463 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-25 16:35:16,463 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 16:35:16,463 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 16:35:16,464 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-06-25 16:35:16,464 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:35:16,464 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 16:35:16,464 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:35:16,464 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 16:35:16,464 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 16:35:16,464 INFO ]: Found error trace [2018-06-25 16:35:16,464 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:35:16,464 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:35:16,464 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 3 times [2018-06-25 16:35:16,464 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:35:16,464 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:35:16,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:16,465 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:35:16,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:35:16,693 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:17,321 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2018-06-25 16:35:17,539 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 29 [2018-06-25 16:35:17,758 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2018-06-25 16:35:17,912 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:17,912 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:35:17,912 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 16:35:17,925 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:35:18,211 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 16:35:18,211 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:35:18,225 INFO ]: Computing forward predicates... [2018-06-25 16:35:18,580 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:18,689 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-25 16:35:21,466 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 16:35:21,490 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:21,568 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-25 16:35:24,118 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 16:35:24,159 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:35:24,165 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:24,244 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-25 16:35:25,394 INFO ]: Simplified to disjunction of 2592 conjuctions. [2018-06-25 16:35:25,405 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:25,490 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-25 16:35:28,325 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 16:35:28,335 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:28,357 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-25 16:35:29,534 INFO ]: Simplified to disjunction of 2592 conjuctions. [2018-06-25 16:35:29,546 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:35:29,593 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-25 16:35:32,246 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 16:35:32,260 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:35:32,264 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:35:32,267 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:35:32,610 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 9 [2018-06-25 16:35:32,890 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:35:32,924 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:35:32,924 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-25 16:35:32,924 INFO ]: Interpolant automaton has 16 states [2018-06-25 16:35:32,924 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-25 16:35:32,924 INFO ]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-06-25 16:35:32,925 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 16 states. [2018-06-25 16:35:33,118 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2018-06-25 16:35:33,280 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2018-06-25 16:35:33,290 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:35:33,290 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:35:33,290 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:35:33,290 INFO ]: Start accepts. Automaton has 16 states. Word has length 13 [2018-06-25 16:35:33,290 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:35:33,290 INFO ]: With dead ends: 10 [2018-06-25 16:35:33,290 INFO ]: Without dead ends: 0 [2018-06-25 16:35:33,291 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-06-25 16:35:33,291 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 16:35:33,291 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 16:35:33,291 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 16:35:33,291 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 16:35:33,291 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-25 16:35:33,291 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:35:33,291 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 16:35:33,291 INFO ]: Interpolant automaton has 16 states. [2018-06-25 16:35:33,291 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 16:35:33,291 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 16:35:33,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:35:33 BoogieIcfgContainer [2018-06-25 16:35:33,297 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:35:33,298 INFO ]: Toolchain (without parser) took 21428.55 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 763.4 MB). Free memory was 246.7 MB in the beginning and 472.2 MB in the end (delta: -225.5 MB). Peak memory consumption was 537.9 MB. Max. memory is 3.6 GB. [2018-06-25 16:35:33,299 INFO ]: SmtParser took 0.07 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 16:35:33,299 INFO ]: ChcToBoogie took 121.16 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:35:33,299 INFO ]: Boogie Preprocessor took 56.56 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 242.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:35:33,303 INFO ]: RCFGBuilder took 446.68 ms. Allocated memory is still 308.3 MB. Free memory was 242.7 MB in the beginning and 210.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:35:33,303 INFO ]: TraceAbstraction took 20786.73 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 763.4 MB). Free memory was 210.8 MB in the beginning and 472.2 MB in the end (delta: -261.4 MB). Peak memory consumption was 501.9 MB. Max. memory is 3.6 GB. [2018-06-25 16:35:33,306 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 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 121.16 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.56 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 242.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 446.68 ms. Allocated memory is still 308.3 MB. Free memory was 242.7 MB in the beginning and 210.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 20786.73 ms. Allocated memory was 308.3 MB in the beginning and 1.1 GB in the end (delta: 763.4 MB). Free memory was 210.8 MB in the beginning and 472.2 MB in the end (delta: -261.4 MB). Peak memory consumption was 501.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 20.7s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 73 SDs, 0 SdLazy, 53 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 5018 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3130 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e1_1116_e2_617.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-35-33-320.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e1_1116_e2_617.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-35-33-320.csv Received shutdown request...