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.9.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:44:19,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:44:19,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:44:19,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:44:19,783 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:44:19,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:44:19,787 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:44:19,789 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:44:19,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:44:19,793 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:44:19,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:44:19,794 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:44:19,795 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:44:19,796 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:44:19,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:44:19,800 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:44:19,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:44:19,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:44:19,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:44:19,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:44:19,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:44:19,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:44:19,820 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:44:19,820 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:44:19,820 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:44:19,821 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:44:19,823 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:44:19,824 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:44:19,825 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:44:19,825 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:44:19,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:44:19,826 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:44:19,826 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:44:19,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:44:19,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:44:19,832 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 14:44:19,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:44:19,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:44:19,856 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:44:19,856 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:44:19,857 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:44:19,857 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:44:19,857 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:44:19,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:44:19,858 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:44:19,858 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:44:19,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:44:19,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:44:19,859 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:44:19,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:44:19,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:44:19,860 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:44:19,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:44:19,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:44:19,860 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:44:19,861 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:44:19,862 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:44:19,916 INFO ]: Repository-Root is: /tmp [2018-06-22 14:44:19,930 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:44:19,935 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:44:19,936 INFO ]: Initializing SmtParser... [2018-06-22 14:44:19,937 INFO ]: SmtParser initialized [2018-06-22 14:44:19,937 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-22 14:44:19,938 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 14:44:20,026 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 unknown [2018-06-22 14:44:23,606 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-22 14:44:23,612 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:44:23,618 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:44:23,618 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:44:23,618 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:44:23,619 INFO ]: ChcToBoogie initialized [2018-06-22 14:44:23,622 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,726 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23 Unit [2018-06-22 14:44:23,726 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:44:23,727 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:44:23,727 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:44:23,727 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:44:23,749 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,750 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,798 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,799 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,848 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,849 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,873 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (1/1) ... [2018-06-22 14:44:23,894 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:44:23,894 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:44:23,894 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:44:23,894 INFO ]: RCFGBuilder initialized [2018-06-22 14:44:23,895 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (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 14:44:23,908 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:44:23,908 INFO ]: Found specification of procedure False [2018-06-22 14:44:23,908 INFO ]: Found implementation of procedure False [2018-06-22 14:44:23,908 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:44:23,908 INFO ]: Found specification of procedure state [2018-06-22 14:44:23,908 INFO ]: Found implementation of procedure state [2018-06-22 14:44:23,908 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:44:23,908 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:44:23,908 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 14:44:26,306 INFO ]: Using library mode [2018-06-22 14:44:26,306 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:44:26 BoogieIcfgContainer [2018-06-22 14:44:26,307 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:44:26,308 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:44:26,308 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:44:26,311 INFO ]: TraceAbstraction initialized [2018-06-22 14:44:26,311 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:44:23" (1/3) ... [2018-06-22 14:44:26,312 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c7ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:44:26, skipping insertion in model container [2018-06-22 14:44:26,312 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:44:23" (2/3) ... [2018-06-22 14:44:26,312 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c7ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:44:26, skipping insertion in model container [2018-06-22 14:44:26,312 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:44:26" (3/3) ... [2018-06-22 14:44:26,314 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:44:26,322 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:44:26,332 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:44:26,379 INFO ]: Using default assertion order modulation [2018-06-22 14:44:26,379 INFO ]: Interprodecural is true [2018-06-22 14:44:26,379 INFO ]: Hoare is false [2018-06-22 14:44:26,379 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:44:26,380 INFO ]: Backedges is TWOTRACK [2018-06-22 14:44:26,380 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:44:26,380 INFO ]: Difference is false [2018-06-22 14:44:26,380 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:44:26,380 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:44:26,394 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:44:26,405 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:44:26,405 INFO ]: Found error trace [2018-06-22 14:44:26,406 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:26,406 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:26,411 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:44:26,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:26,414 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:26,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:26,455 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:26,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:26,572 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:26,838 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:44:26,844 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:44:26,844 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:44:26,846 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:44:26,864 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:44:26,864 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:44:26,867 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:44:27,196 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:27,196 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:44:27,198 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:44:27,199 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:44:27,200 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:27,214 INFO ]: With dead ends: 13 [2018-06-22 14:44:27,214 INFO ]: Without dead ends: 13 [2018-06-22 14:44:27,217 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 14:44:27,235 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:44:27,263 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:44:27,264 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:44:27,264 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:44:27,266 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:44:27,266 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:27,266 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:44:27,266 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:44:27,266 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:44:27,267 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:44:27,267 INFO ]: Found error trace [2018-06-22 14:44:27,267 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:27,267 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:27,267 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:44:27,267 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:27,268 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:27,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:27,268 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:27,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:27,793 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:28,848 WARN ]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:44:29,101 WARN ]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:44:29,411 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:44:29,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:29,411 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 14:44:29,419 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:29,995 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:30,049 INFO ]: Computing forward predicates... [2018-06-22 14:44:34,336 WARN ]: Spent 790.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2018-06-22 14:44:34,500 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:44:34,534 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:34,534 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 14:44:34,535 INFO ]: Interpolant automaton has 8 states [2018-06-22 14:44:34,535 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 14:44:34,535 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-22 14:44:34,535 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 14:44:34,996 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2018-06-22 14:44:35,135 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:35,136 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:44:35,137 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:44:35,137 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 14:44:35,137 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:35,137 INFO ]: With dead ends: 15 [2018-06-22 14:44:35,137 INFO ]: Without dead ends: 15 [2018-06-22 14:44:35,138 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:44:35,138 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:44:35,141 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:44:35,141 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:44:35,141 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:44:35,141 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:44:35,142 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:35,142 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:44:35,142 INFO ]: Interpolant automaton has 8 states. [2018-06-22 14:44:35,142 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:44:35,143 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:44:35,143 INFO ]: Found error trace [2018-06-22 14:44:35,143 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:35,144 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:35,144 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:44:35,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:35,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:35,145 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:35,145 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:35,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:35,965 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:37,100 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:44:37,138 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:44:37,138 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:37,138 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 14:44:37,146 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:44:37,779 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:44:37,779 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:37,841 INFO ]: Computing forward predicates... [2018-06-22 14:44:41,876 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2018-06-22 14:44:44,729 WARN ]: Spent 612.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2018-06-22 14:44:44,943 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:44:44,976 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:44,976 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 14:44:44,976 INFO ]: Interpolant automaton has 12 states [2018-06-22 14:44:44,976 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 14:44:44,977 INFO ]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:44:44,977 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 14:44:46,136 WARN ]: Spent 1.04 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-06-22 14:44:46,355 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2018-06-22 14:44:46,845 WARN ]: Spent 437.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2018-06-22 14:44:46,963 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:46,963 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:44:46,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:44:46,992 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 14:44:46,992 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:46,993 INFO ]: With dead ends: 17 [2018-06-22 14:44:46,993 INFO ]: Without dead ends: 17 [2018-06-22 14:44:46,993 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:44:46,993 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:44:46,996 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:44:46,996 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:44:46,997 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:44:46,997 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:44:46,997 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:46,997 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:44:46,997 INFO ]: Interpolant automaton has 12 states. [2018-06-22 14:44:46,997 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:44:46,998 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:44:46,998 INFO ]: Found error trace [2018-06-22 14:44:46,998 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:46,998 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:46,998 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:44:46,998 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:46,998 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:46,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:46,999 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:44:46,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:47,876 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:49,174 WARN ]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:44:49,347 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:44:49,432 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:44:49,432 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:49,432 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 14:44:49,443 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:44:50,278 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:44:50,278 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:50,346 INFO ]: Computing forward predicates... [2018-06-22 14:44:52,547 WARN ]: Spent 443.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-06-22 14:44:54,206 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2018-06-22 14:44:57,157 WARN ]: Spent 948.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-06-22 14:44:57,391 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2018-06-22 14:44:57,402 INFO ]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:44:57,437 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:57,437 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 14:44:57,438 INFO ]: Interpolant automaton has 16 states [2018-06-22 14:44:57,438 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 14:44:57,438 INFO ]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-22 14:44:57,438 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 14:44:58,463 WARN ]: Spent 903.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-06-22 14:44:58,653 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 26 [2018-06-22 14:44:58,910 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2018-06-22 14:44:59,321 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2018-06-22 14:45:00,073 WARN ]: Spent 687.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2018-06-22 14:45:01,553 WARN ]: Spent 1.40 s on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-06-22 14:45:01,649 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:45:01,650 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:45:01,651 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:45:01,651 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 14:45:01,651 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:45:01,651 INFO ]: With dead ends: 23 [2018-06-22 14:45:01,651 INFO ]: Without dead ends: 23 [2018-06-22 14:45:01,652 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2018-06-22 14:45:01,652 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:45:01,656 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:45:01,656 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:45:01,656 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:45:01,656 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2018-06-22 14:45:01,657 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:45:01,657 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:45:01,657 INFO ]: Interpolant automaton has 16 states. [2018-06-22 14:45:01,657 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:45:01,657 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:45:01,657 INFO ]: Found error trace [2018-06-22 14:45:01,657 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:45:01,658 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:45:01,658 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 4 times [2018-06-22 14:45:01,658 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:45:01,658 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:45:01,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:45:01,658 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:45:01,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:45:02,918 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:45:05,435 WARN ]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:45:05,648 WARN ]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:45:05,963 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-06-22 14:45:06,150 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:45:06,150 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:45:06,150 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 14:45:06,158 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown