java -Xss4m -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/hopv/lia/mochi/max.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:32:11,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:32:11,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:32:11,614 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:32:11,614 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:32:11,616 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:32:11,617 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:32:11,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:32:11,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:32:11,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:32:11,625 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:32:11,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:32:11,627 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:32:11,628 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:32:11,629 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:32:11,630 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:32:11,631 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:32:11,633 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:32:11,634 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:32:11,645 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:32:11,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:32:11,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:32:11,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:32:11,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:32:11,649 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:32:11,650 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:32:11,651 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:32:11,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:32:11,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:32:11,660 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:32:11,661 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:32:11,662 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:32:11,662 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:32:11,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:32:11,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:32:11,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:32:11,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:32:11,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:32:11,683 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:32:11,684 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:32:11,685 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:32:11,688 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:32:11,689 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:32:11,689 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:32:11,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:32:11,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:32:11,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:32:11,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:32:11,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:32:11,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:32:11,690 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:32:11,691 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:32:11,694 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:32:11,694 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:32:11,750 INFO ]: Repository-Root is: /tmp [2018-06-25 09:32:11,765 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:32:11,771 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:32:11,772 INFO ]: Initializing SmtParser... [2018-06-25 09:32:11,773 INFO ]: SmtParser initialized [2018-06-25 09:32:11,773 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-25 09:32:11,774 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 [2018-06-25 09:32:11,857 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 unknown [2018-06-25 09:32:12,013 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-25 09:32:12,018 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:32:12,024 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:32:12,025 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:32:12,025 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:32:12,025 INFO ]: ChcToBoogie initialized [2018-06-25 09:32:12,031 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,085 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12 Unit [2018-06-25 09:32:12,085 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:32:12,087 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:32:12,087 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:32:12,087 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:32:12,107 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,107 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,112 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,112 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,116 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,119 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,120 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (1/1) ... [2018-06-25 09:32:12,121 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:32:12,121 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:32:12,121 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:32:12,121 INFO ]: RCFGBuilder initialized [2018-06-25 09:32:12,123 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (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) [2018-06-25 09:32:12,136 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:32:12,136 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:32:12,137 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:32:12,137 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:32:12,137 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:32:12,137 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 [2018-06-25 09:32:12,544 INFO ]: Using library mode [2018-06-25 09:32:12,548 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:12 BoogieIcfgContainer [2018-06-25 09:32:12,548 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:32:12,549 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:32:12,549 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:32:12,553 INFO ]: TraceAbstraction initialized [2018-06-25 09:32:12,553 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:32:12" (1/3) ... [2018-06-25 09:32:12,554 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d70b589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:32:12, skipping insertion in model container [2018-06-25 09:32:12,554 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:32:12" (2/3) ... [2018-06-25 09:32:12,554 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d70b589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:32:12, skipping insertion in model container [2018-06-25 09:32:12,554 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:32:12" (3/3) ... [2018-06-25 09:32:12,556 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:32:12,563 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:32:12,572 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:32:12,607 INFO ]: Using default assertion order modulation [2018-06-25 09:32:12,607 INFO ]: Interprodecural is true [2018-06-25 09:32:12,607 INFO ]: Hoare is false [2018-06-25 09:32:12,607 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:32:12,607 INFO ]: Backedges is TWOTRACK [2018-06-25 09:32:12,607 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:32:12,608 INFO ]: Difference is false [2018-06-25 09:32:12,608 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:32:12,608 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:32:12,620 INFO ]: Start isEmpty. Operand 18 states. [2018-06-25 09:32:12,629 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:32:12,630 INFO ]: Found error trace [2018-06-25 09:32:12,630 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:12,631 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:12,635 INFO ]: Analyzing trace with hash 106306067, now seen corresponding path program 1 times [2018-06-25 09:32:12,638 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:12,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:12,678 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:12,678 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:12,678 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:12,706 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:12,814 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:32:12,817 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:12,817 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:12,819 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:12,829 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:12,829 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:12,831 INFO ]: Start difference. First operand 18 states. Second operand 4 states. [2018-06-25 09:32:13,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:13,057 INFO ]: Finished difference Result 29 states and 37 transitions. [2018-06-25 09:32:13,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:13,058 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:32:13,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:13,065 INFO ]: With dead ends: 29 [2018-06-25 09:32:13,065 INFO ]: Without dead ends: 29 [2018-06-25 09:32:13,067 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:32:13,082 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-25 09:32:13,108 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-25 09:32:13,110 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-25 09:32:13,112 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2018-06-25 09:32:13,113 INFO ]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 8 [2018-06-25 09:32:13,113 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:13,114 INFO ]: Abstraction has 29 states and 37 transitions. [2018-06-25 09:32:13,114 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:13,114 INFO ]: Start isEmpty. Operand 29 states and 37 transitions. [2018-06-25 09:32:13,116 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 09:32:13,116 INFO ]: Found error trace [2018-06-25 09:32:13,116 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:13,116 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:13,117 INFO ]: Analyzing trace with hash 1231226898, now seen corresponding path program 1 times [2018-06-25 09:32:13,117 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:13,117 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:13,117 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:13,118 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:13,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:13,130 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:13,194 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:32:13,195 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:13,195 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 [2018-06-25 09:32:13,204 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:13,253 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:13,260 INFO ]: Computing forward predicates... [2018-06-25 09:32:13,285 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:32:13,325 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:13,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:32:13,325 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:13,325 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:13,325 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:13,326 INFO ]: Start difference. First operand 29 states and 37 transitions. Second operand 4 states. [2018-06-25 09:32:13,694 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:13,694 INFO ]: Finished difference Result 38 states and 49 transitions. [2018-06-25 09:32:13,694 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:13,694 INFO ]: Start accepts. Automaton has 4 states. Word has length 18 [2018-06-25 09:32:13,695 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:13,697 INFO ]: With dead ends: 38 [2018-06-25 09:32:13,697 INFO ]: Without dead ends: 38 [2018-06-25 09:32:13,698 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:32:13,698 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-25 09:32:13,704 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-25 09:32:13,704 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-25 09:32:13,705 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2018-06-25 09:32:13,706 INFO ]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 18 [2018-06-25 09:32:13,706 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:13,706 INFO ]: Abstraction has 38 states and 49 transitions. [2018-06-25 09:32:13,706 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:13,706 INFO ]: Start isEmpty. Operand 38 states and 49 transitions. [2018-06-25 09:32:13,708 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 09:32:13,708 INFO ]: Found error trace [2018-06-25 09:32:13,708 INFO ]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:13,708 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:13,708 INFO ]: Analyzing trace with hash 512233946, now seen corresponding path program 1 times [2018-06-25 09:32:13,708 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:13,708 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:13,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:13,709 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:13,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:13,728 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:14,366 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:14,367 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:14,367 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 [2018-06-25 09:32:14,376 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:14,410 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:14,414 INFO ]: Computing forward predicates... [2018-06-25 09:32:14,914 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:14,934 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:14,934 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-06-25 09:32:14,935 INFO ]: Interpolant automaton has 14 states [2018-06-25 09:32:14,935 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 09:32:14,935 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-25 09:32:14,936 INFO ]: Start difference. First operand 38 states and 49 transitions. Second operand 14 states. [2018-06-25 09:32:15,949 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:15,949 INFO ]: Finished difference Result 98 states and 136 transitions. [2018-06-25 09:32:15,949 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-25 09:32:15,949 INFO ]: Start accepts. Automaton has 14 states. Word has length 27 [2018-06-25 09:32:15,950 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:15,954 INFO ]: With dead ends: 98 [2018-06-25 09:32:15,954 INFO ]: Without dead ends: 80 [2018-06-25 09:32:15,957 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2018-06-25 09:32:15,957 INFO ]: Start minimizeSevpa. Operand 80 states. [2018-06-25 09:32:15,973 INFO ]: Finished minimizeSevpa. Reduced states from 80 to 53. [2018-06-25 09:32:15,973 INFO ]: Start removeUnreachable. Operand 53 states. [2018-06-25 09:32:15,977 INFO ]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2018-06-25 09:32:15,977 INFO ]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 27 [2018-06-25 09:32:15,978 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:15,978 INFO ]: Abstraction has 53 states and 67 transitions. [2018-06-25 09:32:15,978 INFO ]: Interpolant automaton has 14 states. [2018-06-25 09:32:15,978 INFO ]: Start isEmpty. Operand 53 states and 67 transitions. [2018-06-25 09:32:15,979 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 09:32:15,979 INFO ]: Found error trace [2018-06-25 09:32:15,979 INFO ]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:15,979 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:15,980 INFO ]: Analyzing trace with hash 512263737, now seen corresponding path program 1 times [2018-06-25 09:32:15,981 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:15,981 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:15,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:15,982 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:15,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:16,008 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:16,060 INFO ]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-25 09:32:16,060 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:32:16,061 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:32:16,061 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:16,061 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:16,061 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:16,061 INFO ]: Start difference. First operand 53 states and 67 transitions. Second operand 4 states. [2018-06-25 09:32:16,104 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:16,104 INFO ]: Finished difference Result 59 states and 72 transitions. [2018-06-25 09:32:16,105 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 09:32:16,105 INFO ]: Start accepts. Automaton has 4 states. Word has length 27 [2018-06-25 09:32:16,105 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:16,107 INFO ]: With dead ends: 59 [2018-06-25 09:32:16,107 INFO ]: Without dead ends: 51 [2018-06-25 09:32:16,107 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:16,107 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-25 09:32:16,113 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-06-25 09:32:16,113 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-25 09:32:16,115 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2018-06-25 09:32:16,115 INFO ]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 27 [2018-06-25 09:32:16,115 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:16,115 INFO ]: Abstraction has 47 states and 57 transitions. [2018-06-25 09:32:16,115 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:16,115 INFO ]: Start isEmpty. Operand 47 states and 57 transitions. [2018-06-25 09:32:16,117 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 09:32:16,117 INFO ]: Found error trace [2018-06-25 09:32:16,117 INFO ]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:16,117 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:16,117 INFO ]: Analyzing trace with hash -2039923015, now seen corresponding path program 2 times [2018-06-25 09:32:16,117 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:16,117 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:16,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:16,118 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:32:16,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:16,138 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:16,354 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:16,354 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:16,354 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 [2018-06-25 09:32:16,373 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:32:16,395 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:32:16,395 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:16,400 INFO ]: Computing forward predicates... [2018-06-25 09:32:16,591 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:16,610 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:16,610 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-06-25 09:32:16,610 INFO ]: Interpolant automaton has 20 states [2018-06-25 09:32:16,611 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-25 09:32:16,611 INFO ]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-06-25 09:32:16,611 INFO ]: Start difference. First operand 47 states and 57 transitions. Second operand 20 states. [2018-06-25 09:32:17,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:17,056 INFO ]: Finished difference Result 77 states and 99 transitions. [2018-06-25 09:32:17,056 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-25 09:32:17,056 INFO ]: Start accepts. Automaton has 20 states. Word has length 27 [2018-06-25 09:32:17,057 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:17,058 INFO ]: With dead ends: 77 [2018-06-25 09:32:17,058 INFO ]: Without dead ends: 66 [2018-06-25 09:32:17,059 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2018-06-25 09:32:17,059 INFO ]: Start minimizeSevpa. Operand 66 states. [2018-06-25 09:32:17,068 INFO ]: Finished minimizeSevpa. Reduced states from 66 to 48. [2018-06-25 09:32:17,068 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-25 09:32:17,070 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-06-25 09:32:17,070 INFO ]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2018-06-25 09:32:17,070 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:17,070 INFO ]: Abstraction has 48 states and 58 transitions. [2018-06-25 09:32:17,070 INFO ]: Interpolant automaton has 20 states. [2018-06-25 09:32:17,070 INFO ]: Start isEmpty. Operand 48 states and 58 transitions. [2018-06-25 09:32:17,072 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 09:32:17,072 INFO ]: Found error trace [2018-06-25 09:32:17,072 INFO ]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:17,072 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:17,072 INFO ]: Analyzing trace with hash 218830939, now seen corresponding path program 3 times [2018-06-25 09:32:17,072 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:17,072 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:17,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:17,073 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:32:17,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:17,084 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:17,221 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:17,221 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:17,221 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 [2018-06-25 09:32:17,227 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 09:32:17,248 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 09:32:17,248 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:17,251 INFO ]: Computing forward predicates... [2018-06-25 09:32:17,393 INFO ]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:32:17,411 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:17,412 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-06-25 09:32:17,412 INFO ]: Interpolant automaton has 20 states [2018-06-25 09:32:17,412 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-25 09:32:17,412 INFO ]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2018-06-25 09:32:17,412 INFO ]: Start difference. First operand 48 states and 58 transitions. Second operand 20 states. [2018-06-25 09:32:17,968 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:17,968 INFO ]: Finished difference Result 72 states and 90 transitions. [2018-06-25 09:32:17,968 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-25 09:32:17,968 INFO ]: Start accepts. Automaton has 20 states. Word has length 27 [2018-06-25 09:32:17,968 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:17,970 INFO ]: With dead ends: 72 [2018-06-25 09:32:17,970 INFO ]: Without dead ends: 61 [2018-06-25 09:32:17,970 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2018-06-25 09:32:17,970 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-25 09:32:17,980 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 44. [2018-06-25 09:32:17,980 INFO ]: Start removeUnreachable. Operand 44 states. [2018-06-25 09:32:17,981 INFO ]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-06-25 09:32:17,981 INFO ]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 27 [2018-06-25 09:32:17,981 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:17,981 INFO ]: Abstraction has 44 states and 53 transitions. [2018-06-25 09:32:17,981 INFO ]: Interpolant automaton has 20 states. [2018-06-25 09:32:17,981 INFO ]: Start isEmpty. Operand 44 states and 53 transitions. [2018-06-25 09:32:17,982 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-25 09:32:17,982 INFO ]: Found error trace [2018-06-25 09:32:17,982 INFO ]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:32:17,983 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:32:17,983 INFO ]: Analyzing trace with hash 1134234811, now seen corresponding path program 2 times [2018-06-25 09:32:17,983 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:32:17,983 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:32:17,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:17,983 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:32:17,983 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:32:17,992 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:18,027 INFO ]: Checked inductivity of 39 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-25 09:32:18,027 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:32:18,027 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 09:32:18,042 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:32:18,066 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:32:18,066 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:32:18,068 INFO ]: Computing forward predicates... [2018-06-25 09:32:18,073 INFO ]: Checked inductivity of 39 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-25 09:32:18,092 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:32:18,092 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:32:18,093 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:32:18,093 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:32:18,093 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:32:18,093 INFO ]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-06-25 09:32:18,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:32:18,114 INFO ]: Finished difference Result 33 states and 38 transitions. [2018-06-25 09:32:18,114 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:32:18,114 INFO ]: Start accepts. Automaton has 4 states. Word has length 37 [2018-06-25 09:32:18,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:32:18,115 INFO ]: With dead ends: 33 [2018-06-25 09:32:18,115 INFO ]: Without dead ends: 0 [2018-06-25 09:32:18,115 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:32:18,115 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:32:18,115 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:32:18,115 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:32:18,115 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:32:18,115 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-06-25 09:32:18,115 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:32:18,115 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:32:18,115 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:32:18,115 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:32:18,115 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:32:18,121 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:32:18 BoogieIcfgContainer [2018-06-25 09:32:18,121 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:32:18,121 INFO ]: Toolchain (without parser) took 6103.13 ms. Allocated memory was 300.4 MB in the beginning and 384.3 MB in the end (delta: 83.9 MB). Free memory was 256.8 MB in the beginning and 229.6 MB in the end (delta: 27.2 MB). Peak memory consumption was 111.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:18,123 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:32:18,124 INFO ]: ChcToBoogie took 61.90 ms. Allocated memory is still 300.4 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:18,125 INFO ]: Boogie Preprocessor took 33.97 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:18,126 INFO ]: RCFGBuilder took 426.70 ms. Allocated memory is still 300.4 MB. Free memory was 252.8 MB in the beginning and 244.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:18,126 INFO ]: TraceAbstraction took 5571.45 ms. Allocated memory was 300.4 MB in the beginning and 384.3 MB in the end (delta: 83.9 MB). Free memory was 244.8 MB in the beginning and 229.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:32:18,130 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.90 ms. Allocated memory is still 300.4 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.97 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 426.70 ms. Allocated memory is still 300.4 MB. Free memory was 252.8 MB in the beginning and 244.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5571.45 ms. Allocated memory was 300.4 MB in the beginning and 384.3 MB in the end (delta: 83.9 MB). Free memory was 244.8 MB in the beginning and 229.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 220 SDslu, 498 SDs, 0 SdLazy, 995 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 127 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 66 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 20329 SizeOfPredicates, 47 NumberOfNonLiveVariables, 581 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 169/209 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-32-18-141.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-32-18-141.csv Received shutdown request...