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/sally-chc-benchmarks/oral_messages/om1_with_relays_general_5_4_agreement.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 03:53:54,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 03:53:54,579 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 03:53:54,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 03:53:54,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 03:53:54,593 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 03:53:54,594 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 03:53:54,596 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 03:53:54,597 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 03:53:54,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 03:53:54,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 03:53:54,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 03:53:54,601 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 03:53:54,602 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 03:53:54,602 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 03:53:54,603 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 03:53:54,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 03:53:54,609 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 03:53:54,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 03:53:54,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 03:53:54,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 03:53:54,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 03:53:54,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 03:53:54,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 03:53:54,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 03:53:54,619 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 03:53:54,619 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 03:53:54,620 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 03:53:54,621 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 03:53:54,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 03:53:54,622 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 03:53:54,623 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 03:53:54,623 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 03:53:54,624 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 03:53:54,625 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 03:53:54,625 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 03:53:54,644 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 03:53:54,644 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 03:53:54,650 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 03:53:54,650 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 03:53:54,651 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 03:53:54,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 03:53:54,652 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 03:53:54,652 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 03:53:54,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 03:53:54,652 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 03:53:54,652 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 03:53:54,652 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 03:53:54,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 03:53:54,653 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 03:53:54,653 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 03:53:54,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 03:53:54,653 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 03:53:54,655 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 03:53:54,655 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 03:53:54,707 INFO ]: Repository-Root is: /tmp [2018-06-22 03:53:54,726 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 03:53:54,730 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 03:53:54,732 INFO ]: Initializing SmtParser... [2018-06-22 03:53:54,732 INFO ]: SmtParser initialized [2018-06-22 03:53:54,733 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_general_5_4_agreement.smt2 [2018-06-22 03:53:54,734 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 03:53:54,833 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_general_5_4_agreement.smt2 unknown [2018-06-22 03:53:55,268 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/oral_messages/om1_with_relays_general_5_4_agreement.smt2 [2018-06-22 03:53:55,275 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 03:53:55,285 INFO ]: Walking toolchain with 4 elements. [2018-06-22 03:53:55,285 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 03:53:55,285 INFO ]: Initializing ChcToBoogie... [2018-06-22 03:53:55,285 INFO ]: ChcToBoogie initialized [2018-06-22 03:53:55,289 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,356 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55 Unit [2018-06-22 03:53:55,356 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 03:53:55,357 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 03:53:55,357 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 03:53:55,357 INFO ]: Boogie Preprocessor initialized [2018-06-22 03:53:55,390 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,391 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,413 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,413 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,430 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,432 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,435 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (1/1) ... [2018-06-22 03:53:55,447 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 03:53:55,448 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 03:53:55,448 INFO ]: Initializing RCFGBuilder... [2018-06-22 03:53:55,448 INFO ]: RCFGBuilder initialized [2018-06-22 03:53:55,449 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (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 03:53:55,470 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 03:53:55,470 INFO ]: Found specification of procedure gotoProc [2018-06-22 03:53:55,470 INFO ]: Found implementation of procedure gotoProc [2018-06-22 03:53:55,470 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 03:53:55,470 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 03:53:55,470 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 03:53:55,954 INFO ]: Using library mode [2018-06-22 03:53:55,954 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:55 BoogieIcfgContainer [2018-06-22 03:53:55,955 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 03:53:55,956 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 03:53:55,956 INFO ]: Initializing TraceAbstraction... [2018-06-22 03:53:55,959 INFO ]: TraceAbstraction initialized [2018-06-22 03:53:55,960 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:53:55" (1/3) ... [2018-06-22 03:53:55,961 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be3506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:53:55, skipping insertion in model container [2018-06-22 03:53:55,961 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:53:55" (2/3) ... [2018-06-22 03:53:55,961 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be3506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:53:55, skipping insertion in model container [2018-06-22 03:53:55,961 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:53:55" (3/3) ... [2018-06-22 03:53:55,971 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 03:53:55,983 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 03:53:55,994 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 03:53:56,052 INFO ]: Using default assertion order modulation [2018-06-22 03:53:56,052 INFO ]: Interprodecural is true [2018-06-22 03:53:56,052 INFO ]: Hoare is false [2018-06-22 03:53:56,052 INFO ]: Compute interpolants for FPandBP [2018-06-22 03:53:56,052 INFO ]: Backedges is TWOTRACK [2018-06-22 03:53:56,053 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 03:53:56,053 INFO ]: Difference is false [2018-06-22 03:53:56,053 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 03:53:56,053 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 03:53:56,070 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 03:53:56,085 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 03:53:56,085 INFO ]: Found error trace [2018-06-22 03:53:56,086 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 03:53:56,086 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 03:53:56,093 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 03:53:56,095 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 03:53:56,096 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 03:53:56,145 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:56,145 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 03:53:56,145 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:56,281 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:53:56,452 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:53:56,455 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 03:53:56,456 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 03:53:56,458 INFO ]: Interpolant automaton has 3 states [2018-06-22 03:53:56,475 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 03:53:56,476 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 03:53:56,478 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 03:53:56,552 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 03:53:56,552 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 03:53:56,555 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 03:53:56,557 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 03:53:56,557 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 03:53:56,568 INFO ]: With dead ends: 9 [2018-06-22 03:53:56,568 INFO ]: Without dead ends: 9 [2018-06-22 03:53:56,570 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 03:53:56,591 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 03:53:56,624 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 03:53:56,625 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 03:53:56,626 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 03:53:56,627 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 03:53:56,627 INFO ]: Finished accepts. word is rejected. [2018-06-22 03:53:56,627 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 03:53:56,627 INFO ]: Interpolant automaton has 3 states. [2018-06-22 03:53:56,627 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 03:53:56,627 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 03:53:56,627 INFO ]: Found error trace [2018-06-22 03:53:56,627 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 03:53:56,628 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 03:53:56,628 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 03:53:56,628 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 03:53:56,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 03:53:56,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:56,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 03:53:56,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:56,753 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:53:57,077 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:53:57,077 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 03:53:57,077 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 03:53:57,090 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 03:53:57,257 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:53:57,272 INFO ]: Computing forward predicates... [2018-06-22 03:53:58,485 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:53:58,521 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 03:53:58,521 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 03:53:58,522 INFO ]: Interpolant automaton has 4 states [2018-06-22 03:53:58,522 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 03:53:58,522 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 03:53:58,522 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-22 03:53:58,641 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 03:53:58,641 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 03:53:58,643 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 03:53:58,643 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 03:53:58,643 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 03:53:58,643 INFO ]: With dead ends: 10 [2018-06-22 03:53:58,643 INFO ]: Without dead ends: 10 [2018-06-22 03:53:58,644 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 03:53:58,644 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 03:53:58,646 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 03:53:58,646 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 03:53:58,646 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 03:53:58,646 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 03:53:58,646 INFO ]: Finished accepts. word is rejected. [2018-06-22 03:53:58,646 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 03:53:58,646 INFO ]: Interpolant automaton has 4 states. [2018-06-22 03:53:58,646 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 03:53:58,646 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 03:53:58,647 INFO ]: Found error trace [2018-06-22 03:53:58,648 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 03:53:58,648 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 03:53:58,648 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 03:53:58,648 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 03:53:58,648 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 03:53:58,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:58,649 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 03:53:58,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:53:58,766 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:53:59,201 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:53:59,201 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 03:53:59,201 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 03:53:59,238 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 03:53:59,490 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 03:53:59,490 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:53:59,499 INFO ]: Computing forward predicates... [2018-06-22 03:54:01,327 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:54:01,349 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 03:54:01,349 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-22 03:54:01,349 INFO ]: Interpolant automaton has 5 states [2018-06-22 03:54:01,349 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 03:54:01,349 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 03:54:01,349 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2018-06-22 03:54:01,416 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 03:54:01,416 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 03:54:01,417 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 03:54:01,417 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-22 03:54:01,417 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 03:54:01,417 INFO ]: With dead ends: 11 [2018-06-22 03:54:01,417 INFO ]: Without dead ends: 11 [2018-06-22 03:54:01,417 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 03:54:01,418 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 03:54:01,419 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 03:54:01,419 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 03:54:01,419 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 03:54:01,419 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 03:54:01,419 INFO ]: Finished accepts. word is rejected. [2018-06-22 03:54:01,419 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 03:54:01,419 INFO ]: Interpolant automaton has 5 states. [2018-06-22 03:54:01,419 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 03:54:01,420 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 03:54:01,420 INFO ]: Found error trace [2018-06-22 03:54:01,420 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 03:54:01,420 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 03:54:01,420 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 03:54:01,420 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 03:54:01,420 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 03:54:01,421 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:54:01,421 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 03:54:01,421 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 03:54:01,766 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:54:03,451 WARN ]: Spent 509.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 18 [2018-06-22 03:54:09,251 WARN ]: Spent 5.70 s on a formula simplification. DAG size of input: 483 DAG size of output: 282 [2018-06-22 03:54:10,577 WARN ]: Spent 1.28 s on a formula simplification. DAG size of input: 404 DAG size of output: 131 [2018-06-22 03:54:10,936 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 52 [2018-06-22 03:54:10,939 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 03:54:10,939 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 03:54:10,939 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) [2018-06-22 03:54:10,955 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 03:54:11,196 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 03:54:11,196 INFO ]: Conjunction of SSA is unsat [2018-06-22 03:54:11,207 INFO ]: Computing forward predicates... [2018-06-22 03:54:11,720 WARN ]: Spent 387.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 23 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown