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/cav12/transmitter.7.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:43:08,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:43:08,209 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:43:08,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:43:08,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:43:08,225 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:43:08,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:43:08,228 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:43:08,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:43:08,232 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:43:08,233 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:43:08,233 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:43:08,234 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:43:08,235 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:43:08,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:43:08,239 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:43:08,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:43:08,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:43:08,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:43:08,254 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:43:08,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:43:08,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:43:08,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:43:08,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:43:08,261 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:43:08,262 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:43:08,263 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:43:08,263 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:43:08,264 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:43:08,264 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:43:08,268 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:43:08,269 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:43:08,269 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:43:08,270 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:43:08,270 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:43:08,271 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 14:43:08,290 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:43:08,290 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:43:08,291 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:43:08,292 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:43:08,293 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:43:08,293 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:43:08,293 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:43:08,294 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:43:08,294 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:43:08,294 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:43:08,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:43:08,294 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:43:08,294 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:43:08,295 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:43:08,297 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:43:08,297 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:43:08,343 INFO ]: Repository-Root is: /tmp [2018-06-22 14:43:08,360 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:43:08,363 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:43:08,364 INFO ]: Initializing SmtParser... [2018-06-22 14:43:08,365 INFO ]: SmtParser initialized [2018-06-22 14:43:08,365 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 [2018-06-22 14:43:08,367 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 14:43:08,460 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 unknown [2018-06-22 14:43:10,840 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.7.smt2 [2018-06-22 14:43:10,847 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:43:10,852 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:43:10,853 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:43:10,853 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:43:10,853 INFO ]: ChcToBoogie initialized [2018-06-22 14:43:10,857 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:10,955 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10 Unit [2018-06-22 14:43:10,955 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:43:10,956 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:43:10,956 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:43:10,956 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:43:10,977 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:10,977 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,024 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,025 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,078 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,079 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,093 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (1/1) ... [2018-06-22 14:43:11,111 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:43:11,112 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:43:11,112 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:43:11,112 INFO ]: RCFGBuilder initialized [2018-06-22 14:43:11,113 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:43:11,133 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:43:11,133 INFO ]: Found specification of procedure False [2018-06-22 14:43:11,133 INFO ]: Found implementation of procedure False [2018-06-22 14:43:11,133 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:43:11,133 INFO ]: Found specification of procedure state [2018-06-22 14:43:11,133 INFO ]: Found implementation of procedure state [2018-06-22 14:43:11,133 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:43:11,134 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:43:11,134 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 14:43:12,727 INFO ]: Using library mode [2018-06-22 14:43:12,727 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:43:12 BoogieIcfgContainer [2018-06-22 14:43:12,727 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:43:12,729 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:43:12,729 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:43:12,732 INFO ]: TraceAbstraction initialized [2018-06-22 14:43:12,732 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:43:10" (1/3) ... [2018-06-22 14:43:12,733 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:43:12, skipping insertion in model container [2018-06-22 14:43:12,733 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:10" (2/3) ... [2018-06-22 14:43:12,733 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:43:12, skipping insertion in model container [2018-06-22 14:43:12,733 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:43:12" (3/3) ... [2018-06-22 14:43:12,736 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:43:12,746 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:43:12,760 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:43:12,809 INFO ]: Using default assertion order modulation [2018-06-22 14:43:12,810 INFO ]: Interprodecural is true [2018-06-22 14:43:12,810 INFO ]: Hoare is false [2018-06-22 14:43:12,810 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:43:12,810 INFO ]: Backedges is TWOTRACK [2018-06-22 14:43:12,810 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:43:12,810 INFO ]: Difference is false [2018-06-22 14:43:12,810 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:43:12,810 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:43:12,831 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:43:12,844 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:43:12,844 INFO ]: Found error trace [2018-06-22 14:43:12,845 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:43:12,845 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:43:12,851 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:43:12,853 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:43:12,854 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:43:12,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:12,904 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:43:12,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:13,049 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:13,170 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:43:13,172 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:43:13,173 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:43:13,174 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:43:13,187 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:43:13,188 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:43:13,190 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:43:13,453 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:43:13,453 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:43:13,455 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:43:13,456 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:43:13,456 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:43:13,470 INFO ]: With dead ends: 13 [2018-06-22 14:43:13,470 INFO ]: Without dead ends: 13 [2018-06-22 14:43:13,472 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:43:13,492 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:43:13,528 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:43:13,529 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:43:13,530 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:43:13,531 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:43:13,531 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:43:13,531 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:43:13,531 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:43:13,531 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:43:13,533 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:43:13,533 INFO ]: Found error trace [2018-06-22 14:43:13,533 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:43:13,533 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:43:13,533 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:43:13,533 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:43:13,533 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:43:13,534 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:13,534 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:43:13,534 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:13,887 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:14,565 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:43:14,809 WARN ]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:43:14,908 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:43:14,908 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:43:14,908 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 14:43:14,916 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:43:15,280 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:15,311 INFO ]: Computing forward predicates... [2018-06-22 14:43:17,916 WARN ]: Spent 614.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2018-06-22 14:43:17,986 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:43:18,023 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:43:18,023 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:43:18,023 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:43:18,024 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:43:18,024 INFO ]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:43:18,024 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:43:18,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:43:18,386 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:43:18,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:43:18,387 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:43:18,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:43:18,387 INFO ]: With dead ends: 15 [2018-06-22 14:43:18,387 INFO ]: Without dead ends: 15 [2018-06-22 14:43:18,388 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:43:18,388 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:43:18,390 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:43:18,391 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:43:18,391 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:43:18,391 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:43:18,391 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:43:18,391 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:43:18,391 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:43:18,391 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:43:18,392 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:43:18,392 INFO ]: Found error trace [2018-06-22 14:43:18,392 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:43:18,392 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:43:18,392 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:43:18,392 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:43:18,392 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:43:18,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:18,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:43:18,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:18,839 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:19,653 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:43:19,653 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:43:19,653 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 14:43:19,663 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:43:20,061 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:43:20,061 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:20,101 INFO ]: Computing forward predicates... [2018-06-22 14:43:23,624 WARN ]: Spent 489.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2018-06-22 14:43:23,790 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:43:23,828 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:43:23,828 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 14:43:23,829 INFO ]: Interpolant automaton has 14 states [2018-06-22 14:43:23,829 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 14:43:23,829 INFO ]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:43:23,829 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-06-22 14:43:24,154 WARN ]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-06-22 14:43:24,485 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 27 [2018-06-22 14:43:24,798 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2018-06-22 14:43:24,994 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:43:24,994 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:43:24,996 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:43:24,996 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 14:43:24,996 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:43:24,996 INFO ]: With dead ends: 17 [2018-06-22 14:43:24,996 INFO ]: Without dead ends: 17 [2018-06-22 14:43:24,997 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:43:24,997 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:43:24,999 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:43:24,999 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:43:25,000 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:43:25,000 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:43:25,000 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:43:25,000 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:43:25,000 INFO ]: Interpolant automaton has 14 states. [2018-06-22 14:43:25,000 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:43:25,001 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:43:25,001 INFO ]: Found error trace [2018-06-22 14:43:25,001 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:43:25,001 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:43:25,001 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 14:43:25,001 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:43:25,001 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:43:25,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:25,002 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:43:25,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:25,425 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:26,351 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:43:26,444 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:43:26,444 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:43:26,444 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 14:43:26,461 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:43:27,150 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:43:27,150 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:27,198 INFO ]: Computing forward predicates... [2018-06-22 14:43:30,018 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-06-22 14:43:31,505 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-06-22 14:43:32,976 WARN ]: Spent 758.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2018-06-22 14:43:33,150 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:43:33,180 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:43:33,180 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-22 14:43:33,180 INFO ]: Interpolant automaton has 18 states [2018-06-22 14:43:33,180 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 14:43:33,180 INFO ]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:43:33,181 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2018-06-22 14:43:33,565 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 20 [2018-06-22 14:43:33,857 WARN ]: Spent 251.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2018-06-22 14:43:34,615 WARN ]: Spent 703.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-06-22 14:43:34,688 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:43:34,688 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:43:34,689 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:43:34,689 INFO ]: Start accepts. Automaton has 18 states. Word has length 21 [2018-06-22 14:43:34,689 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:43:34,689 INFO ]: With dead ends: 19 [2018-06-22 14:43:34,689 INFO ]: Without dead ends: 19 [2018-06-22 14:43:34,690 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:43:34,690 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:43:34,693 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:43:34,693 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:43:34,694 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:43:34,694 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:43:34,694 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:43:34,694 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:43:34,694 INFO ]: Interpolant automaton has 18 states. [2018-06-22 14:43:34,694 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:43:34,695 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:43:34,695 INFO ]: Found error trace [2018-06-22 14:43:34,695 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:43:34,695 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:43:34,695 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 14:43:34,695 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:43:34,695 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:43:34,696 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:34,696 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:43:34,696 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:43:35,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:43:36,280 WARN ]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:43:36,400 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:43:36,400 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:43:36,400 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 [2018-06-22 14:43:36,407 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown