java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic_e7_46_e8_16.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:45:14,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:45:14,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:45:14,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:45:14,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:45:14,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:45:14,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:45:14,298 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:45:14,300 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:45:14,300 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:45:14,303 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:45:14,303 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:45:14,304 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:45:14,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:45:14,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:45:14,309 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:45:14,310 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:45:14,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:45:14,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:45:14,327 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:45:14,328 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:45:14,330 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:45:14,330 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:45:14,330 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:45:14,333 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:45:14,334 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:45:14,335 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:45:14,335 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:45:14,340 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:45:14,340 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:45:14,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:45:14,341 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:45:14,342 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:45:14,342 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:45:14,344 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:45:14,344 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 20:45:14,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:45:14,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:45:14,371 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:45:14,371 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:45:14,374 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:45:14,374 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:45:14,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:45:14,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:45:14,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:45:14,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:45:14,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:45:14,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:45:14,375 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:45:14,376 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:45:14,381 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:45:14,381 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:45:14,428 INFO ]: Repository-Root is: /tmp [2018-06-22 20:45:14,446 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:45:14,454 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:45:14,455 INFO ]: Initializing SmtParser... [2018-06-22 20:45:14,456 INFO ]: SmtParser initialized [2018-06-22 20:45:14,456 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic_e7_46_e8_16.smt2 [2018-06-22 20:45:14,458 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 20:45:14,550 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic_e7_46_e8_16.smt2 unknown [2018-06-22 20:45:14,770 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic_e7_46_e8_16.smt2 [2018-06-22 20:45:14,774 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:45:14,780 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:45:14,781 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:45:14,781 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:45:14,781 INFO ]: ChcToBoogie initialized [2018-06-22 20:45:14,787 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,827 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14 Unit [2018-06-22 20:45:14,827 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:45:14,828 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:45:14,828 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:45:14,828 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:45:14,850 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,850 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,859 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,860 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,865 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,866 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,867 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... [2018-06-22 20:45:14,871 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:45:14,872 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:45:14,872 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:45:14,872 INFO ]: RCFGBuilder initialized [2018-06-22 20:45:14,873 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 20:45:14,892 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:45:14,892 INFO ]: Found specification of procedure False [2018-06-22 20:45:14,892 INFO ]: Found implementation of procedure False [2018-06-22 20:45:14,892 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:45:14,892 INFO ]: Found specification of procedure state [2018-06-22 20:45:14,892 INFO ]: Found implementation of procedure state [2018-06-22 20:45:14,892 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:45:14,892 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:45:14,892 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:45:15,063 INFO ]: Using library mode [2018-06-22 20:45:15,064 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:45:15 BoogieIcfgContainer [2018-06-22 20:45:15,064 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:45:15,073 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:45:15,073 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:45:15,076 INFO ]: TraceAbstraction initialized [2018-06-22 20:45:15,076 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:45:14" (1/3) ... [2018-06-22 20:45:15,077 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b71c883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:45:15, skipping insertion in model container [2018-06-22 20:45:15,077 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:14" (2/3) ... [2018-06-22 20:45:15,078 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b71c883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:45:15, skipping insertion in model container [2018-06-22 20:45:15,078 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:45:15" (3/3) ... [2018-06-22 20:45:15,084 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:45:15,099 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:45:15,109 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:45:15,166 INFO ]: Using default assertion order modulation [2018-06-22 20:45:15,166 INFO ]: Interprodecural is true [2018-06-22 20:45:15,166 INFO ]: Hoare is false [2018-06-22 20:45:15,166 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:45:15,166 INFO ]: Backedges is TWOTRACK [2018-06-22 20:45:15,166 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:45:15,166 INFO ]: Difference is false [2018-06-22 20:45:15,166 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:45:15,167 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:45:15,180 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:45:15,191 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:45:15,191 INFO ]: Found error trace [2018-06-22 20:45:15,192 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:15,192 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:15,200 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:45:15,202 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:15,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:15,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,236 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:15,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,292 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:15,523 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 8 [2018-06-22 20:45:15,525 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:45:15,527 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:45:15,527 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:45:15,528 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:45:15,538 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:45:15,539 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:45:15,540 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:45:15,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:15,617 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:45:15,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:45:15,619 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:45:15,620 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:15,631 INFO ]: With dead ends: 13 [2018-06-22 20:45:15,631 INFO ]: Without dead ends: 13 [2018-06-22 20:45:15,633 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:45:15,649 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:45:15,692 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:45:15,693 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:45:15,694 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:45:15,695 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:45:15,695 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:15,695 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:45:15,695 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:45:15,695 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:45:15,697 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:45:15,697 INFO ]: Found error trace [2018-06-22 20:45:15,697 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:15,697 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:15,697 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:45:15,697 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:15,697 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:15,698 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,698 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:15,698 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,756 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:16,515 WARN ]: Spent 495.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 42 [2018-06-22 20:45:16,800 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-06-22 20:45:16,922 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:45:16,922 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:16,922 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:45:16,955 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:16,989 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:17,001 INFO ]: Computing forward predicates... [2018-06-22 20:45:19,441 WARN ]: Spent 916.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 22 [2018-06-22 20:45:19,695 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:45:19,729 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:45:19,729 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:45:19,730 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:45:19,730 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:45:19,730 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:45:19,730 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:45:20,081 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-06-22 20:45:20,243 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:20,243 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:45:20,244 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:45:20,244 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:45:20,244 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:20,244 INFO ]: With dead ends: 15 [2018-06-22 20:45:20,244 INFO ]: Without dead ends: 15 [2018-06-22 20:45:20,245 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:45:20,245 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:45:20,248 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:45:20,248 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:45:20,249 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:45:20,249 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:45:20,249 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:20,249 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:45:20,249 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:45:20,249 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:45:20,250 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:45:20,250 INFO ]: Found error trace [2018-06-22 20:45:20,250 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:20,250 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:20,250 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:45:20,250 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:20,250 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:20,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:20,251 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:20,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:20,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:20,945 WARN ]: Spent 379.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2018-06-22 20:45:21,314 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:45:21,314 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:21,314 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:45:21,327 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:45:21,363 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:45:21,363 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:21,367 INFO ]: Computing forward predicates... [2018-06-22 20:45:22,998 WARN ]: Spent 890.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 28 [2018-06-22 20:45:27,393 WARN ]: Spent 3.42 s on a formula simplification. DAG size of input: 315 DAG size of output: 68 [2018-06-22 20:45:27,941 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-06-22 20:45:28,372 WARN ]: Spent 248.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2018-06-22 20:45:28,489 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:45:28,520 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:45:28,520 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 20:45:28,520 INFO ]: Interpolant automaton has 12 states [2018-06-22 20:45:28,520 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 20:45:28,520 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 20:45:28,521 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 20:45:29,779 WARN ]: Spent 1.15 s on a formula simplification. DAG size of input: 171 DAG size of output: 123 [2018-06-22 20:45:29,916 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2018-06-22 20:45:30,525 WARN ]: Spent 555.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 79 [2018-06-22 20:45:31,525 WARN ]: Spent 958.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2018-06-22 20:45:31,570 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:31,570 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 20:45:31,577 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 20:45:31,577 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 20:45:31,577 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:31,578 INFO ]: With dead ends: 17 [2018-06-22 20:45:31,578 INFO ]: Without dead ends: 17 [2018-06-22 20:45:31,578 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:45:31,578 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 20:45:31,582 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 20:45:31,582 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 20:45:31,582 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 20:45:31,582 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 20:45:31,582 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:31,582 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 20:45:31,582 INFO ]: Interpolant automaton has 12 states. [2018-06-22 20:45:31,582 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 20:45:31,583 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 20:45:31,583 INFO ]: Found error trace [2018-06-22 20:45:31,583 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:31,583 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:31,583 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 20:45:31,583 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:31,583 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:31,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:31,584 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:45:31,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:31,694 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:32,526 WARN ]: Spent 525.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 71 [2018-06-22 20:45:32,805 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 41 [2018-06-22 20:45:32,957 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2018-06-22 20:45:33,476 WARN ]: Spent 364.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 50 [2018-06-22 20:45:33,500 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:45:33,500 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:33,500 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:45:33,508 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 20:45:33,583 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 20:45:33,583 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:33,588 INFO ]: Computing forward predicates... [2018-06-22 20:45:33,840 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,053 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,227 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,261 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,291 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,326 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,419 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,445 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,560 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,824 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,091 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,334 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:35,385 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,708 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,003 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,227 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,517 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,749 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,913 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:37,057 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:37,083 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,251 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,377 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,548 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,720 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,840 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,950 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,063 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,182 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,338 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,456 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,584 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,708 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:46,383 WARN ]: Spent 1.52 s on a formula simplification. DAG size of input: 345 DAG size of output: 10 [2018-06-22 20:45:46,620 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:46:14,948 WARN ]: Spent 25.94 s on a formula simplification. DAG size of input: 1222 DAG size of output: 43 [2018-06-22 20:46:15,841 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:46:15,861 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:46:15,861 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 20:46:15,861 INFO ]: Interpolant automaton has 16 states [2018-06-22 20:46:15,861 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 20:46:15,862 INFO ]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:46:15,862 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. Received shutdown request... [2018-06-22 20:46:16,235 WARN ]: Removed 8 from assertion stack [2018-06-22 20:46:16,235 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 20:46:16,235 WARN ]: Verification canceled [2018-06-22 20:46:16,239 WARN ]: Timeout [2018-06-22 20:46:16,239 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:46:16 BoogieIcfgContainer [2018-06-22 20:46:16,239 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:46:16,239 INFO ]: Toolchain (without parser) took 61464.87 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 902.8 MB). Free memory was 262.7 MB in the beginning and 494.6 MB in the end (delta: -232.0 MB). Peak memory consumption was 670.9 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,240 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:46:16,241 INFO ]: ChcToBoogie took 46.51 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,241 INFO ]: Boogie Preprocessor took 43.54 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 259.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,242 INFO ]: RCFGBuilder took 192.48 ms. Allocated memory is still 308.3 MB. Free memory was 259.7 MB in the beginning and 250.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,243 INFO ]: TraceAbstraction took 61166.22 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 902.8 MB). Free memory was 250.7 MB in the beginning and 494.6 MB in the end (delta: -243.9 MB). Peak memory consumption was 658.9 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,250 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 46.51 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.54 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 259.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 192.48 ms. Allocated memory is still 308.3 MB. Free memory was 259.7 MB in the beginning and 250.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61166.22 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 902.8 MB). Free memory was 250.7 MB in the beginning and 494.6 MB in the end (delta: -243.9 MB). Peak memory consumption was 658.9 MB. 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 constructing difference of abstraction (17states) and interpolant automaton (currently 3 states, 16 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 191. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 61.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 21 SDslu, 130 SDs, 0 SdLazy, 97 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 56.3s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 63104 SizeOfPredicates, 90 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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/traffic_e7_46_e8_16.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-46-16-264.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/traffic_e7_46_e8_16.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-46-16-264.csv Completed graceful shutdown