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.9.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:03:54,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:03:54,752 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:03:54,764 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:03:54,764 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:03:54,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:03:54,767 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:03:54,769 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:03:54,771 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:03:54,772 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:03:54,774 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:03:54,774 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:03:54,775 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:03:54,776 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:03:54,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:03:54,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:03:54,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:03:54,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:03:54,784 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:03:54,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:03:54,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:03:54,790 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:03:54,790 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:03:54,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:03:54,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:03:54,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:03:54,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:03:54,795 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:03:54,796 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:03:54,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:03:54,797 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:03:54,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:03:54,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:03:54,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:03:54,800 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:03:54,800 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:03:54,823 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:03:54,824 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:03:54,824 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:03:54,825 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:03:54,831 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:03:54,831 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:03:54,831 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:03:54,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:03:54,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:03:54,832 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:03:54,832 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:03:54,832 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:03:54,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:03:54,833 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:03:54,833 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:03:54,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:03:54,833 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:03:54,835 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:03:54,835 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:03:54,892 INFO ]: Repository-Root is: /tmp [2018-06-22 05:03:54,915 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:03:54,919 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:03:54,921 INFO ]: Initializing SmtParser... [2018-06-22 05:03:54,921 INFO ]: SmtParser initialized [2018-06-22 05:03:54,922 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-22 05:03:54,924 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 05:03:55,023 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 unknown [2018-06-22 05:03:58,941 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.9.smt2 [2018-06-22 05:03:58,947 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:03:58,953 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:03:58,953 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:03:58,953 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:03:58,953 INFO ]: ChcToBoogie initialized [2018-06-22 05:03:58,957 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:03:58" (1/1) ... [2018-06-22 05:03:59,096 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59 Unit [2018-06-22 05:03:59,096 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:03:59,097 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:03:59,097 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:03:59,097 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:03:59,117 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,117 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,190 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,190 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,239 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,241 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,266 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (1/1) ... [2018-06-22 05:03:59,295 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:03:59,295 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:03:59,295 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:03:59,295 INFO ]: RCFGBuilder initialized [2018-06-22 05:03:59,298 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (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 05:03:59,309 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:03:59,309 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:03:59,309 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:03:59,309 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:03:59,309 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:03:59,309 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:04:02,160 INFO ]: Using library mode [2018-06-22 05:04:02,180 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:04:02 BoogieIcfgContainer [2018-06-22 05:04:02,180 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:04:02,181 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:04:02,181 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:04:02,185 INFO ]: TraceAbstraction initialized [2018-06-22 05:04:02,185 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:03:58" (1/3) ... [2018-06-22 05:04:02,186 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4b5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:04:02, skipping insertion in model container [2018-06-22 05:04:02,186 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:03:59" (2/3) ... [2018-06-22 05:04:02,186 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4b5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:04:02, skipping insertion in model container [2018-06-22 05:04:02,186 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:04:02" (3/3) ... [2018-06-22 05:04:02,191 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:04:02,201 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:04:02,210 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:04:02,268 INFO ]: Using default assertion order modulation [2018-06-22 05:04:02,269 INFO ]: Interprodecural is true [2018-06-22 05:04:02,269 INFO ]: Hoare is false [2018-06-22 05:04:02,269 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:04:02,269 INFO ]: Backedges is TWOTRACK [2018-06-22 05:04:02,269 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:04:02,269 INFO ]: Difference is false [2018-06-22 05:04:02,269 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:04:02,269 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:04:02,284 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:04:02,294 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:04:02,294 INFO ]: Found error trace [2018-06-22 05:04:02,295 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:04:02,295 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:04:02,303 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:04:02,305 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:04:02,306 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:04:02,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:02,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:04:02,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:02,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:02,893 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:02,896 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:04:02,896 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:04:02,899 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:04:02,916 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:04:02,916 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:04:02,920 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:04:03,186 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:04:03,186 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:04:03,187 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:04:03,189 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:04:03,189 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:04:03,201 INFO ]: With dead ends: 9 [2018-06-22 05:04:03,201 INFO ]: Without dead ends: 9 [2018-06-22 05:04:03,203 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 05:04:03,225 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:04:03,257 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:04:03,259 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:04:03,259 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:04:03,261 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:04:03,261 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:04:03,261 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:04:03,261 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:04:03,261 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:04:03,262 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:04:03,262 INFO ]: Found error trace [2018-06-22 05:04:03,262 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:04:03,262 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:04:03,262 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:04:03,262 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:04:03,262 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:04:03,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:03,263 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:04:03,263 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:03,904 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:04,878 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:04:05,007 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:05,007 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:04:05,007 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) [2018-06-22 05:04:05,023 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:04:05,860 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:05,920 INFO ]: Computing forward predicates... [2018-06-22 05:04:09,059 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:09,087 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:04:09,087 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:04:09,087 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:04:09,088 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:04:09,088 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:04:09,088 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:04:09,333 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:04:09,333 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:04:09,334 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:04:09,334 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:04:09,334 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:04:09,335 INFO ]: With dead ends: 10 [2018-06-22 05:04:09,335 INFO ]: Without dead ends: 10 [2018-06-22 05:04:09,335 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:04:09,336 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:04:09,337 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:04:09,337 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:04:09,337 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:04:09,337 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:04:09,337 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:04:09,337 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:04:09,337 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:04:09,337 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:04:09,338 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:04:09,338 INFO ]: Found error trace [2018-06-22 05:04:09,339 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:04:09,339 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:04:09,339 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:04:09,339 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:04:09,339 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:04:09,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:09,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:04:09,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:10,326 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:11,498 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:04:11,773 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 05:04:11,774 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:11,774 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:04:11,774 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) [2018-06-22 05:04:11,788 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:04:12,719 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:04:12,719 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:12,854 INFO ]: Computing forward predicates... [2018-06-22 05:04:16,824 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:16,850 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:04:16,851 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 05:04:16,851 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:04:16,851 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:04:16,851 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:04:16,851 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 05:04:17,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:04:17,255 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:04:17,255 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:04:17,255 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 05:04:17,255 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:04:17,255 INFO ]: With dead ends: 12 [2018-06-22 05:04:17,255 INFO ]: Without dead ends: 12 [2018-06-22 05:04:17,256 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:04:17,256 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:04:17,257 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:04:17,257 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:04:17,258 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:04:17,258 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-06-22 05:04:17,258 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:04:17,258 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:04:17,258 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:04:17,258 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:04:17,258 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:04:17,258 INFO ]: Found error trace [2018-06-22 05:04:17,258 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:04:17,259 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:04:17,259 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 05:04:17,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:04:17,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:04:17,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:17,260 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:04:17,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:18,600 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:20,992 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:20,992 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:04:20,992 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 05:04:20,999 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:04:22,331 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:04:22,332 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:22,473 INFO ]: Computing forward predicates... [2018-06-22 05:04:39,119 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:39,156 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:04:39,156 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-22 05:04:39,156 INFO ]: Interpolant automaton has 11 states [2018-06-22 05:04:39,157 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 05:04:39,157 INFO ]: CoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:04:39,157 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-22 05:04:39,576 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:04:39,576 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 05:04:39,576 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 05:04:39,576 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-22 05:04:39,576 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:04:39,576 INFO ]: With dead ends: 16 [2018-06-22 05:04:39,576 INFO ]: Without dead ends: 16 [2018-06-22 05:04:39,577 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=86, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:04:39,577 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 05:04:39,578 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 05:04:39,579 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 05:04:39,579 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 05:04:39,579 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-06-22 05:04:39,579 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:04:39,579 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 05:04:39,579 INFO ]: Interpolant automaton has 11 states. [2018-06-22 05:04:39,579 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 05:04:39,580 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 05:04:39,580 INFO ]: Found error trace [2018-06-22 05:04:39,580 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:04:39,580 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:04:39,580 INFO ]: Analyzing trace with hash 39881678, now seen corresponding path program 4 times [2018-06-22 05:04:39,580 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:04:39,580 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:04:39,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:39,581 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:04:39,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:04:41,675 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:04:45,868 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:04:45,868 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:04:45,868 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 05:04:45,874 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown