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/cav12/transmitter.9.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:40:52,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:40:52,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:40:52,340 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:40:52,341 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:40:52,342 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:40:52,345 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:40:52,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:40:52,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:40:52,352 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:40:52,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:40:52,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:40:52,355 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:40:52,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:40:52,357 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:40:52,358 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:40:52,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:40:52,370 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:40:52,371 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:40:52,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:40:52,376 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:40:52,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:40:52,380 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:40:52,381 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:40:52,382 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:40:52,382 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:40:52,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:40:52,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:40:52,387 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:40:52,387 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:40:52,388 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:40:52,388 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:40:52,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:40:52,395 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:40:52,396 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:40:52,396 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:40:52,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:40:52,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:40:52,421 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:40:52,421 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:40:52,427 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:40:52,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:40:52,427 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:40:52,428 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:40:52,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:40:52,428 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:40:52,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:40:52,428 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:40:52,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:40:52,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:40:52,429 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:40:52,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:40:52,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:40:52,429 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:40:52,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:40:52,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:40:52,434 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:40:52,436 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:40:52,436 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:40:52,481 INFO ]: Repository-Root is: /tmp [2018-06-25 12:40:52,496 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:40:52,503 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:40:52,504 INFO ]: Initializing SmtParser... [2018-06-25 12:40:52,504 INFO ]: SmtParser initialized [2018-06-25 12:40:52,505 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-25 12:40:52,506 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 12:40:52,604 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 unknown [2018-06-25 12:40:56,369 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-25 12:40:56,375 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:40:56,382 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:40:56,383 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:40:56,383 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:40:56,383 INFO ]: ChcToBoogie initialized [2018-06-25 12:40:56,387 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,517 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56 Unit [2018-06-25 12:40:56,517 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:40:56,518 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:40:56,518 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:40:56,518 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:40:56,543 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,543 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,613 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,613 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,669 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,671 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,690 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (1/1) ... [2018-06-25 12:40:56,710 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:40:56,710 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:40:56,710 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:40:56,710 INFO ]: RCFGBuilder initialized [2018-06-25 12:40:56,711 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (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 12:40:56,725 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:40:56,725 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:40:56,725 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:40:56,725 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:40:56,725 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:40:56,725 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 12:40:59,778 INFO ]: Using library mode [2018-06-25 12:40:59,778 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:40:59 BoogieIcfgContainer [2018-06-25 12:40:59,778 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:40:59,779 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:40:59,779 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:40:59,787 INFO ]: TraceAbstraction initialized [2018-06-25 12:40:59,787 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:40:56" (1/3) ... [2018-06-25 12:40:59,788 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b08e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:40:59, skipping insertion in model container [2018-06-25 12:40:59,788 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:40:56" (2/3) ... [2018-06-25 12:40:59,788 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b08e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:40:59, skipping insertion in model container [2018-06-25 12:40:59,788 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:40:59" (3/3) ... [2018-06-25 12:40:59,790 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:40:59,799 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:40:59,810 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:40:59,865 INFO ]: Using default assertion order modulation [2018-06-25 12:40:59,866 INFO ]: Interprodecural is true [2018-06-25 12:40:59,866 INFO ]: Hoare is false [2018-06-25 12:40:59,866 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:40:59,866 INFO ]: Backedges is TWOTRACK [2018-06-25 12:40:59,866 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:40:59,866 INFO ]: Difference is false [2018-06-25 12:40:59,866 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:40:59,866 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:40:59,879 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:40:59,895 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:40:59,896 INFO ]: Found error trace [2018-06-25 12:40:59,899 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:40:59,899 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:40:59,903 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 12:40:59,905 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:40:59,906 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:40:59,947 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:40:59,947 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:40:59,947 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:00,175 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:00,394 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:00,397 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:41:00,397 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:41:00,399 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:41:00,409 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:41:00,410 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:41:00,411 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:41:00,698 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:41:00,698 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:41:00,699 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:41:00,700 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:41:00,700 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:41:00,713 INFO ]: With dead ends: 9 [2018-06-25 12:41:00,713 INFO ]: Without dead ends: 9 [2018-06-25 12:41:00,717 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 12:41:00,738 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:41:00,769 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:41:00,770 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:41:00,770 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:41:00,772 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:41:00,772 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:41:00,772 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:41:00,772 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:41:00,772 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:41:00,772 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:41:00,772 INFO ]: Found error trace [2018-06-25 12:41:00,773 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:41:00,773 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:41:00,773 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 12:41:00,773 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:41:00,773 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:41:00,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:00,774 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:41:00,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:01,356 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:02,297 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:02,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:41:02,297 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 12:41:02,315 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:41:02,989 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:03,046 INFO ]: Computing forward predicates... [2018-06-25 12:41:06,114 WARN ]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:41:06,120 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:06,145 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:41:06,145 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 12:41:06,146 INFO ]: Interpolant automaton has 5 states [2018-06-25 12:41:06,146 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 12:41:06,146 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-25 12:41:06,146 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 12:41:06,261 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:41:06,261 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 12:41:06,261 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 12:41:06,261 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 12:41:06,261 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:41:06,262 INFO ]: With dead ends: 10 [2018-06-25 12:41:06,262 INFO ]: Without dead ends: 10 [2018-06-25 12:41:06,262 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-25 12:41:06,262 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 12:41:06,263 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 12:41:06,263 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 12:41:06,264 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 12:41:06,264 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 12:41:06,264 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:41:06,264 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 12:41:06,264 INFO ]: Interpolant automaton has 5 states. [2018-06-25 12:41:06,264 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 12:41:06,264 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 12:41:06,264 INFO ]: Found error trace [2018-06-25 12:41:06,264 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:41:06,264 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:41:06,264 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 12:41:06,264 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:41:06,264 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:41:06,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:06,265 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:41:06,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:07,055 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:08,392 WARN ]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:41:08,673 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 12:41:08,674 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:08,674 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:41:08,674 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 12:41:08,693 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:41:09,406 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:41:09,407 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:09,463 INFO ]: Computing forward predicates... [2018-06-25 12:41:13,128 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 16 [2018-06-25 12:41:13,137 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:13,167 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:41:13,167 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-25 12:41:13,167 INFO ]: Interpolant automaton has 7 states [2018-06-25 12:41:13,167 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 12:41:13,167 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:41:13,168 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-25 12:41:13,555 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:41:13,555 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 12:41:13,555 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 12:41:13,555 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-25 12:41:13,555 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:41:13,555 INFO ]: With dead ends: 12 [2018-06-25 12:41:13,555 INFO ]: Without dead ends: 12 [2018-06-25 12:41:13,556 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:41:13,556 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 12:41:13,557 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 12:41:13,557 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 12:41:13,557 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 12:41:13,557 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-25 12:41:13,557 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:41:13,557 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 12:41:13,557 INFO ]: Interpolant automaton has 7 states. [2018-06-25 12:41:13,557 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 12:41:13,558 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 12:41:13,558 INFO ]: Found error trace [2018-06-25 12:41:13,558 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:41:13,558 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:41:13,558 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-25 12:41:13,558 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:41:13,558 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:41:13,559 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:13,559 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:41:13,559 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:14,899 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:16,761 WARN ]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:41:17,010 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:41:17,230 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:41:17,252 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:17,253 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:41:17,253 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 12:41:17,264 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:41:18,509 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:41:18,509 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:18,614 INFO ]: Computing forward predicates... [2018-06-25 12:41:21,557 WARN ]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-25 12:41:36,647 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:36,683 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:41:36,683 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-25 12:41:36,683 INFO ]: Interpolant automaton has 11 states [2018-06-25 12:41:36,683 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-25 12:41:36,684 INFO ]: CoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2018-06-25 12:41:36,684 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-25 12:41:37,136 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:41:37,136 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-25 12:41:37,136 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-25 12:41:37,136 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-25 12:41:37,136 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:41:37,137 INFO ]: With dead ends: 16 [2018-06-25 12:41:37,137 INFO ]: Without dead ends: 16 [2018-06-25 12:41:37,137 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=70, Invalid=86, Unknown=0, NotChecked=0, Total=156 [2018-06-25 12:41:37,137 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-25 12:41:37,139 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-25 12:41:37,139 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 12:41:37,139 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-25 12:41:37,139 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-06-25 12:41:37,140 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:41:37,140 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-25 12:41:37,140 INFO ]: Interpolant automaton has 11 states. [2018-06-25 12:41:37,140 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-25 12:41:37,140 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-25 12:41:37,140 INFO ]: Found error trace [2018-06-25 12:41:37,140 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:41:37,140 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:41:37,140 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 4 times [2018-06-25 12:41:37,140 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:41:37,140 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:41:37,141 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:37,141 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:41:37,141 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:41:38,949 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:41:43,120 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:41:43,120 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:41:43,120 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:41:43,126 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown