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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:59:37,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:59:37,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:59:37,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:59:37,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:59:37,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:59:37,861 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:59:37,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:59:37,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:59:37,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:59:37,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:59:37,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:59:37,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:59:37,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:59:37,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:59:37,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:59:37,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:59:37,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:59:37,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:59:37,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:59:37,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:59:37,879 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:59:37,880 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:59:37,880 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:59:37,881 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:59:37,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:59:37,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:59:37,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:59:37,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:59:37,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:59:37,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:59:37,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:59:37,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:59:37,887 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:59:37,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:59:37,888 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:59:37,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:59:37,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:59:37,907 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:59:37,907 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:59:37,908 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:59:37,909 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:59:37,909 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:59:37,909 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:59:37,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:59:37,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:59:37,910 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:59:37,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:59:37,910 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:59:37,910 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:59:37,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:59:37,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:59:37,913 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:59:37,914 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:59:37,914 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:59:37,965 INFO ]: Repository-Root is: /tmp [2018-06-22 04:59:37,983 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:59:37,991 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:59:37,992 INFO ]: Initializing SmtParser... [2018-06-22 04:59:37,993 INFO ]: SmtParser initialized [2018-06-22 04:59:37,993 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.2.smt2 [2018-06-22 04:59:37,995 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 04:59:38,091 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.2.smt2 unknown [2018-06-22 04:59:38,876 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.2.smt2 [2018-06-22 04:59:38,880 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:59:38,894 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:59:38,894 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:59:38,894 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:59:38,895 INFO ]: ChcToBoogie initialized [2018-06-22 04:59:38,898 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:38,989 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38 Unit [2018-06-22 04:59:38,989 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:59:38,990 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:59:38,990 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:59:38,990 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:59:39,010 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,010 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,024 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,024 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,048 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,050 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,053 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (1/1) ... [2018-06-22 04:59:39,064 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:59:39,064 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:59:39,065 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:59:39,065 INFO ]: RCFGBuilder initialized [2018-06-22 04:59:39,067 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (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 04:59:39,079 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:59:39,079 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:59:39,080 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:59:39,080 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:59:39,080 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:59:39,080 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 04:59:39,585 INFO ]: Using library mode [2018-06-22 04:59:39,587 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:59:39 BoogieIcfgContainer [2018-06-22 04:59:39,587 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:59:39,588 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:59:39,588 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:59:39,596 INFO ]: TraceAbstraction initialized [2018-06-22 04:59:39,596 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:59:38" (1/3) ... [2018-06-22 04:59:39,597 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a09dd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:59:39, skipping insertion in model container [2018-06-22 04:59:39,597 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:38" (2/3) ... [2018-06-22 04:59:39,597 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a09dd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:59:39, skipping insertion in model container [2018-06-22 04:59:39,597 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:59:39" (3/3) ... [2018-06-22 04:59:39,599 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:59:39,608 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:59:39,618 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:59:39,663 INFO ]: Using default assertion order modulation [2018-06-22 04:59:39,664 INFO ]: Interprodecural is true [2018-06-22 04:59:39,664 INFO ]: Hoare is false [2018-06-22 04:59:39,664 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:59:39,664 INFO ]: Backedges is TWOTRACK [2018-06-22 04:59:39,664 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:59:39,664 INFO ]: Difference is false [2018-06-22 04:59:39,664 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:59:39,664 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:59:39,680 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:59:39,693 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:59:39,694 INFO ]: Found error trace [2018-06-22 04:59:39,694 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:39,695 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:39,700 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:59:39,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:39,703 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:39,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:39,750 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:39,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:39,848 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:39,953 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:39,955 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:59:39,955 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:59:39,957 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:59:39,968 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:59:39,968 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:59:39,970 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:59:40,073 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:40,073 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:59:40,076 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:59:40,077 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:59:40,077 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:40,086 INFO ]: With dead ends: 9 [2018-06-22 04:59:40,087 INFO ]: Without dead ends: 9 [2018-06-22 04:59:40,088 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 [2018-06-22 04:59:40,105 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:59:40,122 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:59:40,124 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:59:40,124 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:59:40,125 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:59:40,125 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:40,125 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:59:40,125 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:59:40,125 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:59:40,126 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:59:40,126 INFO ]: Found error trace [2018-06-22 04:59:40,126 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:40,126 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:40,126 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:59:40,126 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:40,126 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:40,127 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:40,127 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:40,127 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:40,234 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:40,443 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:40,443 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:40,443 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 04:59:40,450 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:40,613 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:40,628 INFO ]: Computing forward predicates... [2018-06-22 04:59:40,873 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:59:41,186 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:41,219 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:41,219 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:59:41,220 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:59:41,220 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:59:41,220 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:59:41,220 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:59:41,452 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-06-22 04:59:41,541 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:41,541 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:59:41,542 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:59:41,542 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:59:41,542 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:41,542 INFO ]: With dead ends: 11 [2018-06-22 04:59:41,542 INFO ]: Without dead ends: 11 [2018-06-22 04:59:41,543 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:59:41,545 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:59:41,546 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:59:41,546 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:59:41,546 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:59:41,546 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:59:41,546 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:41,546 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:59:41,546 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:59:41,546 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:59:41,547 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:59:41,547 INFO ]: Found error trace [2018-06-22 04:59:41,547 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:41,547 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:41,547 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:59:41,547 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:41,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:41,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:41,548 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:41,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:41,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:42,098 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 04:59:42,209 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:42,209 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:42,209 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 04:59:42,215 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:59:42,431 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:59:42,431 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:42,447 INFO ]: Computing forward predicates... [2018-06-22 04:59:42,656 WARN ]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:59:43,763 WARN ]: Spent 375.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-06-22 04:59:44,595 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:44,617 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:44,617 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:59:44,617 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:59:44,617 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:59:44,617 INFO ]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:59:44,617 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:59:44,697 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:44,698 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:59:44,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:59:44,698 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:59:44,698 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:44,698 INFO ]: With dead ends: 13 [2018-06-22 04:59:44,698 INFO ]: Without dead ends: 13 [2018-06-22 04:59:44,699 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:59:44,699 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:59:44,700 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:59:44,700 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:59:44,700 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:59:44,701 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:59:44,701 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:44,701 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:59:44,701 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:59:44,701 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:59:44,701 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:59:44,701 INFO ]: Found error trace [2018-06-22 04:59:44,701 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:44,701 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:44,701 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:59:44,701 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:44,701 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:44,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:44,702 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:59:44,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:44,887 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:45,668 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-06-22 04:59:45,717 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:45,717 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:45,717 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 04:59:45,725 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:59:46,078 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:59:46,078 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:46,099 INFO ]: Computing forward predicates... [2018-06-22 04:59:50,218 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-22 04:59:50,235 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:50,308 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:50,309 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 04:59:50,309 INFO ]: Interpolant automaton has 14 states [2018-06-22 04:59:50,309 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 04:59:50,309 INFO ]: CoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:59:50,309 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 04:59:50,802 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:50,802 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 04:59:50,802 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 04:59:50,802 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 04:59:50,802 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:50,803 INFO ]: With dead ends: 15 [2018-06-22 04:59:50,803 INFO ]: Without dead ends: 15 [2018-06-22 04:59:50,803 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2018-06-22 04:59:50,803 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 04:59:50,806 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 04:59:50,806 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 04:59:50,806 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 04:59:50,806 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 04:59:50,806 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:50,807 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 04:59:50,807 INFO ]: Interpolant automaton has 14 states. [2018-06-22 04:59:50,807 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 04:59:50,807 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 04:59:50,807 INFO ]: Found error trace [2018-06-22 04:59:50,807 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:50,807 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:50,807 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-22 04:59:50,807 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:50,807 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:50,808 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:50,808 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:59:50,808 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:51,095 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:51,981 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:51,981 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:51,981 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 04:59:51,990 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown