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/fpice/inductive2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:20:59,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:20:59,593 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:20:59,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:20:59,609 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:20:59,610 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:20:59,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:20:59,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:20:59,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:20:59,616 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:20:59,617 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:20:59,617 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:20:59,618 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:20:59,619 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:20:59,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:20:59,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:20:59,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:20:59,629 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:20:59,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:20:59,631 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:20:59,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:20:59,635 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:20:59,635 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:20:59,635 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:20:59,636 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:20:59,637 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:20:59,638 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:20:59,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:20:59,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:20:59,640 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:20:59,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:20:59,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:20:59,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:20:59,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:20:59,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:20:59,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:20:59,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:20:59,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:20:59,657 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:20:59,657 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:20:59,658 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:20:59,658 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:20:59,658 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:20:59,659 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:20:59,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:20:59,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:20:59,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:20:59,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:20:59,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:20:59,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:20:59,660 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:20:59,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:20:59,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:20:59,661 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:20:59,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:20:59,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:20:59,661 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:20:59,662 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:20:59,663 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:20:59,703 INFO ]: Repository-Root is: /tmp [2018-06-25 09:20:59,715 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:20:59,718 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:20:59,719 INFO ]: Initializing SmtParser... [2018-06-25 09:20:59,720 INFO ]: SmtParser initialized [2018-06-25 09:20:59,720 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 [2018-06-25 09:20:59,721 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 09:20:59,812 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 unknown [2018-06-25 09:20:59,975 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 [2018-06-25 09:20:59,979 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:20:59,985 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:20:59,986 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:20:59,986 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:20:59,986 INFO ]: ChcToBoogie initialized [2018-06-25 09:20:59,989 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:20:59" (1/1) ... [2018-06-25 09:21:00,042 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00 Unit [2018-06-25 09:21:00,042 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:21:00,043 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:21:00,043 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:21:00,043 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:21:00,062 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,062 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,066 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,066 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,068 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,069 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,070 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (1/1) ... [2018-06-25 09:21:00,071 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:21:00,071 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:21:00,071 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:21:00,072 INFO ]: RCFGBuilder initialized [2018-06-25 09:21:00,072 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (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 [2018-06-25 09:21:00,086 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:21:00,086 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:21:00,087 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:21:00,087 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:21:00,087 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:21:00,087 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 09:21:00,292 INFO ]: Using library mode [2018-06-25 09:21:00,293 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:00 BoogieIcfgContainer [2018-06-25 09:21:00,293 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:21:00,294 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:21:00,294 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:21:00,297 INFO ]: TraceAbstraction initialized [2018-06-25 09:21:00,297 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:20:59" (1/3) ... [2018-06-25 09:21:00,298 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b3d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:21:00, skipping insertion in model container [2018-06-25 09:21:00,298 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:00" (2/3) ... [2018-06-25 09:21:00,298 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b3d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:21:00, skipping insertion in model container [2018-06-25 09:21:00,298 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:00" (3/3) ... [2018-06-25 09:21:00,300 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:21:00,310 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:21:00,319 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:21:00,381 INFO ]: Using default assertion order modulation [2018-06-25 09:21:00,382 INFO ]: Interprodecural is true [2018-06-25 09:21:00,382 INFO ]: Hoare is false [2018-06-25 09:21:00,382 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:21:00,382 INFO ]: Backedges is TWOTRACK [2018-06-25 09:21:00,382 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:21:00,382 INFO ]: Difference is false [2018-06-25 09:21:00,382 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:21:00,382 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:21:00,394 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 09:21:00,403 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 09:21:00,403 INFO ]: Found error trace [2018-06-25 09:21:00,404 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 09:21:00,404 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:00,409 INFO ]: Analyzing trace with hash 1546170962, now seen corresponding path program 1 times [2018-06-25 09:21:00,411 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:00,411 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:00,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,442 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:00,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,466 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:00,490 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:00,492 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:00,492 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:21:00,494 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:21:00,505 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:21:00,506 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:00,508 INFO ]: Start difference. First operand 10 states. Second operand 2 states. [2018-06-25 09:21:00,532 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:00,532 INFO ]: Finished difference Result 8 states and 10 transitions. [2018-06-25 09:21:00,532 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:21:00,533 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 09:21:00,534 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:00,544 INFO ]: With dead ends: 8 [2018-06-25 09:21:00,545 INFO ]: Without dead ends: 8 [2018-06-25 09:21:00,546 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:00,563 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 09:21:00,576 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 09:21:00,578 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 09:21:00,578 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-06-25 09:21:00,579 INFO ]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2018-06-25 09:21:00,579 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:00,579 INFO ]: Abstraction has 8 states and 10 transitions. [2018-06-25 09:21:00,579 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:21:00,579 INFO ]: Start isEmpty. Operand 8 states and 10 transitions. [2018-06-25 09:21:00,580 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:21:00,580 INFO ]: Found error trace [2018-06-25 09:21:00,580 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:00,580 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:00,580 INFO ]: Analyzing trace with hash 684747320, now seen corresponding path program 1 times [2018-06-25 09:21:00,580 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:00,580 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:00,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,581 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:00,581 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,595 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:00,676 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:00,676 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:00,677 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:21:00,678 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:21:00,678 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:21:00,678 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:21:00,679 INFO ]: Start difference. First operand 8 states and 10 transitions. Second operand 3 states. [2018-06-25 09:21:00,698 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:00,698 INFO ]: Finished difference Result 8 states and 7 transitions. [2018-06-25 09:21:00,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:21:00,698 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:21:00,698 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:00,699 INFO ]: With dead ends: 8 [2018-06-25 09:21:00,699 INFO ]: Without dead ends: 8 [2018-06-25 09:21:00,699 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 [2018-06-25 09:21:00,700 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 09:21:00,700 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 09:21:00,701 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 09:21:00,701 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2018-06-25 09:21:00,701 INFO ]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2018-06-25 09:21:00,701 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:00,701 INFO ]: Abstraction has 8 states and 7 transitions. [2018-06-25 09:21:00,701 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:21:00,701 INFO ]: Start isEmpty. Operand 8 states and 7 transitions. [2018-06-25 09:21:00,701 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:21:00,701 INFO ]: Found error trace [2018-06-25 09:21:00,701 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:00,702 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:00,702 INFO ]: Analyzing trace with hash 684538783, now seen corresponding path program 1 times [2018-06-25 09:21:00,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:00,702 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:00,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,703 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:00,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:00,713 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:00,744 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:00,744 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:00,744 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:21:00,744 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:21:00,744 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:21:00,744 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:21:00,744 INFO ]: Start difference. First operand 8 states and 7 transitions. Second operand 3 states. [2018-06-25 09:21:00,745 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:00,745 INFO ]: Finished difference Result 4 states and 3 transitions. [2018-06-25 09:21:00,745 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:21:00,745 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:21:00,745 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:00,745 INFO ]: With dead ends: 4 [2018-06-25 09:21:00,745 INFO ]: Without dead ends: 0 [2018-06-25 09:21:00,745 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 [2018-06-25 09:21:00,745 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:21:00,746 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:21:00,746 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:21:00,746 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:21:00,746 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-25 09:21:00,746 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:00,746 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:21:00,746 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:21:00,746 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:21:00,746 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:21:00,751 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:21:00 BoogieIcfgContainer [2018-06-25 09:21:00,751 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:21:00,752 INFO ]: Toolchain (without parser) took 771.95 ms. Allocated memory is still 302.5 MB. Free memory was 256.9 MB in the beginning and 228.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:00,753 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.5 MB. Free memory is still 266.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:21:00,755 INFO ]: ChcToBoogie took 56.62 ms. Allocated memory is still 302.5 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:00,755 INFO ]: Boogie Preprocessor took 28.38 ms. Allocated memory is still 302.5 MB. Free memory was 254.9 MB in the beginning and 253.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 09:21:00,756 INFO ]: RCFGBuilder took 221.70 ms. Allocated memory is still 302.5 MB. Free memory was 253.9 MB in the beginning and 245.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:00,757 INFO ]: TraceAbstraction took 456.73 ms. Allocated memory is still 302.5 MB. Free memory was 245.9 MB in the beginning and 228.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:00,762 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 302.5 MB. Free memory is still 266.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.62 ms. Allocated memory is still 302.5 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 28.38 ms. Allocated memory is still 302.5 MB. Free memory was 254.9 MB in the beginning and 253.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 221.70 ms. Allocated memory is still 302.5 MB. Free memory was 253.9 MB in the beginning and 245.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 456.73 ms. Allocated memory is still 302.5 MB. Free memory was 245.9 MB in the beginning and 228.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 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, 10 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/inductive2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-21-00-781.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-21-00-781.csv Received shutdown request...