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.3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:00:21,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:00:21,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:00:21,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:00:21,592 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:00:21,594 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:00:21,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:00:21,599 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:00:21,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:00:21,602 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:00:21,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:00:21,603 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:00:21,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:00:21,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:00:21,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:00:21,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:00:21,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:00:21,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:00:21,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:00:21,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:00:21,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:00:21,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:00:21,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:00:21,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:00:21,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:00:21,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:00:21,619 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:00:21,619 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:00:21,620 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:00:21,621 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:00:21,621 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:00:21,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:00:21,622 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:00:21,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:00:21,624 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:00:21,624 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:00:21,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:00:21,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:00:21,638 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:00:21,638 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:00:21,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:00:21,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:00:21,640 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:00:21,640 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:00:21,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:00:21,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:00:21,641 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:00:21,641 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:00:21,641 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:00:21,641 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:00:21,641 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:00:21,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:00:21,642 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:00:21,643 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:00:21,643 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:00:21,679 INFO ]: Repository-Root is: /tmp [2018-06-22 05:00:21,694 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:00:21,698 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:00:21,699 INFO ]: Initializing SmtParser... [2018-06-22 05:00:21,699 INFO ]: SmtParser initialized [2018-06-22 05:00:21,700 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.3.smt2 [2018-06-22 05:00:21,701 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 05:00:21,799 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.3.smt2 unknown [2018-06-22 05:00:22,858 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.3.smt2 [2018-06-22 05:00:22,863 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:00:22,872 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:00:22,873 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:00:22,873 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:00:22,873 INFO ]: ChcToBoogie initialized [2018-06-22 05:00:22,877 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:22,964 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22 Unit [2018-06-22 05:00:22,964 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:00:22,965 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:00:22,965 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:00:22,965 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:00:22,987 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:22,987 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,011 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,011 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,035 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,037 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,042 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (1/1) ... [2018-06-22 05:00:23,049 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:00:23,049 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:00:23,050 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:00:23,050 INFO ]: RCFGBuilder initialized [2018-06-22 05:00:23,050 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (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 05:00:23,065 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:00:23,065 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:00:23,065 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:00:23,065 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:00:23,065 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:00:23,065 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 05:00:23,722 INFO ]: Using library mode [2018-06-22 05:00:23,722 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:00:23 BoogieIcfgContainer [2018-06-22 05:00:23,722 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:00:23,724 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:00:23,724 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:00:23,727 INFO ]: TraceAbstraction initialized [2018-06-22 05:00:23,728 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:00:22" (1/3) ... [2018-06-22 05:00:23,729 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322614d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:00:23, skipping insertion in model container [2018-06-22 05:00:23,729 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:00:22" (2/3) ... [2018-06-22 05:00:23,729 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322614d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:00:23, skipping insertion in model container [2018-06-22 05:00:23,729 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:00:23" (3/3) ... [2018-06-22 05:00:23,731 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:00:23,742 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:00:23,758 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:00:23,811 INFO ]: Using default assertion order modulation [2018-06-22 05:00:23,812 INFO ]: Interprodecural is true [2018-06-22 05:00:23,812 INFO ]: Hoare is false [2018-06-22 05:00:23,812 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:00:23,812 INFO ]: Backedges is TWOTRACK [2018-06-22 05:00:23,812 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:00:23,812 INFO ]: Difference is false [2018-06-22 05:00:23,812 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:00:23,812 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:00:23,829 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:00:23,840 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:00:23,840 INFO ]: Found error trace [2018-06-22 05:00:23,843 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:00:23,843 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:00:23,849 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 05:00:23,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:00:23,851 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:00:23,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:23,900 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:00:23,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:24,011 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:24,120 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:24,122 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:00:24,122 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:00:24,123 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:00:24,133 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:00:24,133 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:00:24,135 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:00:24,264 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:00:24,264 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:00:24,267 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:00:24,268 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:00:24,269 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:00:24,282 INFO ]: With dead ends: 9 [2018-06-22 05:00:24,282 INFO ]: Without dead ends: 9 [2018-06-22 05:00:24,285 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 05:00:24,304 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:00:24,335 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:00:24,336 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:00:24,336 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:00:24,341 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:00:24,342 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:00:24,342 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:00:24,342 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:00:24,342 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:00:24,342 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:00:24,342 INFO ]: Found error trace [2018-06-22 05:00:24,342 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:00:24,342 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:00:24,342 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 05:00:24,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:00:24,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:00:24,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:24,343 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:00:24,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:24,527 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:24,953 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:24,953 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:00:24,953 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 05:00:24,973 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:00:25,218 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:25,236 INFO ]: Computing forward predicates... [2018-06-22 05:00:25,675 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:25,702 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:00:25,702 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 05:00:25,703 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:00:25,703 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:00:25,703 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:00:25,703 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 05:00:25,921 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:00:25,921 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:00:25,922 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 05:00:25,922 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 05:00:25,922 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:00:25,923 INFO ]: With dead ends: 10 [2018-06-22 05:00:25,923 INFO ]: Without dead ends: 10 [2018-06-22 05:00:25,924 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:00:25,924 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:00:25,925 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:00:25,925 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:00:25,925 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:00:25,925 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:00:25,925 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:00:25,926 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:00:25,926 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:00:25,926 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:00:25,926 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:00:25,926 INFO ]: Found error trace [2018-06-22 05:00:25,926 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:00:25,926 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:00:25,926 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 05:00:25,926 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:00:25,926 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:00:25,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:25,927 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:00:25,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:26,115 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:26,511 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 05:00:26,554 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:26,554 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:00:26,554 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 05:00:26,561 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:00:26,825 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:00:26,825 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:26,843 INFO ]: Computing forward predicates... [2018-06-22 05:00:27,575 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 1 [2018-06-22 05:00:28,489 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-06-22 05:00:28,492 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:28,514 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:00:28,514 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 05:00:28,515 INFO ]: Interpolant automaton has 8 states [2018-06-22 05:00:28,515 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 05:00:28,515 INFO ]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:00:28,515 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 05:00:28,713 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:00:28,713 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:00:28,714 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:00:28,714 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 05:00:28,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:00:28,714 INFO ]: With dead ends: 13 [2018-06-22 05:00:28,714 INFO ]: Without dead ends: 13 [2018-06-22 05:00:28,714 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:00:28,715 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:00:28,716 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:00:28,716 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:00:28,717 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:00:28,717 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2018-06-22 05:00:28,717 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:00:28,717 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:00:28,717 INFO ]: Interpolant automaton has 8 states. [2018-06-22 05:00:28,717 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:00:28,717 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:00:28,717 INFO ]: Found error trace [2018-06-22 05:00:28,718 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:00:28,718 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:00:28,718 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 05:00:28,718 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:00:28,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:00:28,718 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:28,719 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:00:28,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:29,038 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:29,615 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 05:00:29,972 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-06-22 05:00:30,142 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:30,142 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:00:30,142 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 05:00:30,148 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:00:30,651 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 05:00:30,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:30,679 INFO ]: Computing forward predicates... [2018-06-22 05:00:35,988 WARN ]: Spent 262.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 11 [2018-06-22 05:00:37,187 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:37,212 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:00:37,213 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 05:00:37,213 INFO ]: Interpolant automaton has 13 states [2018-06-22 05:00:37,213 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 05:00:37,213 INFO ]: CoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:00:37,213 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 05:00:37,443 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:00:37,443 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:00:37,443 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:00:37,443 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 05:00:37,443 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:00:37,443 INFO ]: With dead ends: 14 [2018-06-22 05:00:37,443 INFO ]: Without dead ends: 14 [2018-06-22 05:00:37,444 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2018-06-22 05:00:37,444 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:00:37,445 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:00:37,445 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:00:37,445 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:00:37,445 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:00:37,445 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:00:37,445 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:00:37,446 INFO ]: Interpolant automaton has 13 states. [2018-06-22 05:00:37,446 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:00:37,446 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:00:37,446 INFO ]: Found error trace [2018-06-22 05:00:37,446 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:00:37,446 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:00:37,446 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-22 05:00:37,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:00:37,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:00:37,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:37,447 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:00:37,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:00:37,743 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:00:38,344 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 05:00:38,516 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:00:38,516 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:00:38,516 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 05:00:38,524 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown