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_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:34:59,593 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:34:59,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:34:59,609 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:34:59,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:34:59,610 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:34:59,614 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:34:59,616 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:34:59,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:34:59,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:34:59,619 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:34:59,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:34:59,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:34:59,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:34:59,624 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:34:59,625 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:34:59,626 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:34:59,637 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:34:59,638 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:34:59,639 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:34:59,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:34:59,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:34:59,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:34:59,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:34:59,647 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:34:59,648 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:34:59,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:34:59,649 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:34:59,650 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:34:59,650 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:34:59,653 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:34:59,654 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:34:59,654 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:34:59,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:34:59,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:34:59,655 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:34:59,676 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:34:59,676 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:34:59,676 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:34:59,677 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:34:59,677 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:34:59,678 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:34:59,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:34:59,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:34:59,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:34:59,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:34:59,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:34:59,682 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:34:59,682 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:34:59,682 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:34:59,682 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:34:59,683 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:34:59,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:34:59,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:34:59,683 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:34:59,684 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:34:59,686 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:34:59,735 INFO ]: Repository-Root is: /tmp [2018-06-22 11:34:59,750 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:34:59,755 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:34:59,756 INFO ]: Initializing SmtParser... [2018-06-22 11:34:59,756 INFO ]: SmtParser initialized [2018-06-22 11:34:59,757 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 [2018-06-22 11:34:59,758 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 11:34:59,823 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 unknown [2018-06-22 11:34:59,963 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_95.smt2 [2018-06-22 11:34:59,971 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:34:59,979 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:34:59,980 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:34:59,980 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:34:59,980 INFO ]: ChcToBoogie initialized [2018-06-22 11:34:59,983 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:34:59" (1/1) ... [2018-06-22 11:35:00,026 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00 Unit [2018-06-22 11:35:00,027 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:00,027 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:00,027 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:00,027 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:00,052 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,052 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,060 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,060 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,063 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,064 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,066 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (1/1) ... [2018-06-22 11:35:00,068 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:00,068 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:00,068 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:00,068 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:00,069 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (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) [2018-06-22 11:35:00,089 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:00,089 INFO ]: Found specification of procedure False [2018-06-22 11:35:00,089 INFO ]: Found implementation of procedure False [2018-06-22 11:35:00,089 INFO ]: Specification and implementation of procedure mDLRunknownCLN2 given in one single declaration [2018-06-22 11:35:00,089 INFO ]: Found specification of procedure mDLRunknownCLN2 [2018-06-22 11:35:00,089 INFO ]: Found implementation of procedure mDLRunknownCLN2 [2018-06-22 11:35:00,089 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:00,089 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:00,089 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 11:35:00,434 INFO ]: Using library mode [2018-06-22 11:35:00,435 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:00 BoogieIcfgContainer [2018-06-22 11:35:00,435 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:00,436 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:00,436 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:00,439 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:00,439 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:34:59" (1/3) ... [2018-06-22 11:35:00,440 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:00, skipping insertion in model container [2018-06-22 11:35:00,440 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:00" (2/3) ... [2018-06-22 11:35:00,440 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:00, skipping insertion in model container [2018-06-22 11:35:00,440 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:00" (3/3) ... [2018-06-22 11:35:00,442 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:00,457 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:00,470 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:00,523 INFO ]: Using default assertion order modulation [2018-06-22 11:35:00,524 INFO ]: Interprodecural is true [2018-06-22 11:35:00,524 INFO ]: Hoare is false [2018-06-22 11:35:00,524 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:00,524 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:00,524 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:00,524 INFO ]: Difference is false [2018-06-22 11:35:00,524 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:00,524 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:00,538 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 11:35:00,549 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:00,549 INFO ]: Found error trace [2018-06-22 11:35:00,550 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:00,550 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:00,559 INFO ]: Analyzing trace with hash 55609196, now seen corresponding path program 1 times [2018-06-22 11:35:00,561 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:00,561 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:00,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,604 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:00,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,616 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:00,639 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:00,642 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:00,642 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:00,644 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:00,654 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:00,654 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:00,656 INFO ]: Start difference. First operand 14 states. Second operand 2 states. [2018-06-22 11:35:00,675 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:00,675 INFO ]: Finished difference Result 12 states and 14 transitions. [2018-06-22 11:35:00,675 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:00,676 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:00,676 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:00,690 INFO ]: With dead ends: 12 [2018-06-22 11:35:00,690 INFO ]: Without dead ends: 12 [2018-06-22 11:35:00,692 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 [2018-06-22 11:35:00,712 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 11:35:00,729 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 11:35:00,730 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 11:35:00,731 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-06-22 11:35:00,732 INFO ]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2018-06-22 11:35:00,732 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:00,732 INFO ]: Abstraction has 12 states and 14 transitions. [2018-06-22 11:35:00,732 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:00,732 INFO ]: Start isEmpty. Operand 12 states and 14 transitions. [2018-06-22 11:35:00,734 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:35:00,734 INFO ]: Found error trace [2018-06-22 11:35:00,734 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:00,734 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:00,734 INFO ]: Analyzing trace with hash -853408345, now seen corresponding path program 1 times [2018-06-22 11:35:00,734 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:00,734 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:00,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,735 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:00,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,753 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:00,827 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:00,827 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:00,827 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:35:00,829 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:35:00,829 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:35:00,829 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:00,829 INFO ]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2018-06-22 11:35:00,870 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:00,870 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-22 11:35:00,870 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:35:00,871 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:35:00,871 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:00,873 INFO ]: With dead ends: 14 [2018-06-22 11:35:00,873 INFO ]: Without dead ends: 14 [2018-06-22 11:35:00,873 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 [2018-06-22 11:35:00,873 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 11:35:00,880 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 11:35:00,880 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:35:00,881 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-06-22 11:35:00,881 INFO ]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2018-06-22 11:35:00,881 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:00,881 INFO ]: Abstraction has 14 states and 17 transitions. [2018-06-22 11:35:00,881 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:35:00,881 INFO ]: Start isEmpty. Operand 14 states and 17 transitions. [2018-06-22 11:35:00,882 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:35:00,882 INFO ]: Found error trace [2018-06-22 11:35:00,882 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:00,882 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:00,882 INFO ]: Analyzing trace with hash 1830989231, now seen corresponding path program 1 times [2018-06-22 11:35:00,882 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:00,882 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:00,883 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,883 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:00,883 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:00,898 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:01,080 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:01,081 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:01,081 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 11:35:01,090 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:01,124 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:01,135 INFO ]: Computing forward predicates... [2018-06-22 11:35:01,508 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:01,544 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:01,544 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:35:01,544 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:35:01,545 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:35:01,545 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:35:01,545 INFO ]: Start difference. First operand 14 states and 17 transitions. Second operand 9 states. [2018-06-22 11:35:02,290 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:02,290 INFO ]: Finished difference Result 19 states and 29 transitions. [2018-06-22 11:35:02,290 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:35:02,290 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:35:02,290 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:02,291 INFO ]: With dead ends: 19 [2018-06-22 11:35:02,291 INFO ]: Without dead ends: 19 [2018-06-22 11:35:02,292 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:35:02,292 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:35:02,297 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:35:02,297 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:35:02,298 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-06-22 11:35:02,299 INFO ]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 17 [2018-06-22 11:35:02,299 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:02,299 INFO ]: Abstraction has 17 states and 24 transitions. [2018-06-22 11:35:02,299 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:35:02,299 INFO ]: Start isEmpty. Operand 17 states and 24 transitions. [2018-06-22 11:35:02,300 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:35:02,300 INFO ]: Found error trace [2018-06-22 11:35:02,300 INFO ]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:02,300 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:02,300 INFO ]: Analyzing trace with hash -239819849, now seen corresponding path program 2 times [2018-06-22 11:35:02,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:02,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:02,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:02,301 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:02,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:02,318 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:02,445 INFO ]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:35:02,445 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:02,445 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 11:35:02,458 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:35:02,478 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:35:02,478 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:02,481 INFO ]: Computing forward predicates... [2018-06-22 11:35:02,598 INFO ]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:35:02,623 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:02,623 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 11:35:02,624 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:35:02,624 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:35:02,624 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:35:02,624 INFO ]: Start difference. First operand 17 states and 24 transitions. Second operand 10 states. [2018-06-22 11:35:03,190 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:03,190 INFO ]: Finished difference Result 21 states and 33 transitions. [2018-06-22 11:35:03,191 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:35:03,191 INFO ]: Start accepts. Automaton has 10 states. Word has length 25 [2018-06-22 11:35:03,191 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:03,192 INFO ]: With dead ends: 21 [2018-06-22 11:35:03,192 INFO ]: Without dead ends: 21 [2018-06-22 11:35:03,192 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:35:03,192 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:35:03,198 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:35:03,198 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:35:03,199 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2018-06-22 11:35:03,199 INFO ]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 25 [2018-06-22 11:35:03,199 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:03,199 INFO ]: Abstraction has 19 states and 28 transitions. [2018-06-22 11:35:03,199 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:35:03,199 INFO ]: Start isEmpty. Operand 19 states and 28 transitions. [2018-06-22 11:35:03,201 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:35:03,201 INFO ]: Found error trace [2018-06-22 11:35:03,201 INFO ]: trace histogram [7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:03,201 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:03,201 INFO ]: Analyzing trace with hash 93087679, now seen corresponding path program 3 times [2018-06-22 11:35:03,201 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:03,201 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:03,202 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:03,202 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:35:03,202 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:03,220 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:03,363 INFO ]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 11:35:03,363 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:03,363 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:35:03,381 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:03,399 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 11:35:03,399 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:03,403 INFO ]: Computing forward predicates... [2018-06-22 11:35:03,446 INFO ]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 11:35:03,466 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:03,466 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-06-22 11:35:03,467 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:35:03,467 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:35:03,467 INFO ]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:35:03,467 INFO ]: Start difference. First operand 19 states and 28 transitions. Second operand 11 states. [2018-06-22 11:35:03,783 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:03,783 INFO ]: Finished difference Result 23 states and 37 transitions. [2018-06-22 11:35:03,788 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:35:03,788 INFO ]: Start accepts. Automaton has 11 states. Word has length 33 [2018-06-22 11:35:03,788 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:03,789 INFO ]: With dead ends: 23 [2018-06-22 11:35:03,789 INFO ]: Without dead ends: 23 [2018-06-22 11:35:03,790 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:35:03,790 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:35:03,796 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-06-22 11:35:03,796 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:35:03,797 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2018-06-22 11:35:03,797 INFO ]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 33 [2018-06-22 11:35:03,797 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:03,797 INFO ]: Abstraction has 21 states and 32 transitions. [2018-06-22 11:35:03,797 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:35:03,797 INFO ]: Start isEmpty. Operand 21 states and 32 transitions. [2018-06-22 11:35:03,800 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:35:03,800 INFO ]: Found error trace [2018-06-22 11:35:03,800 INFO ]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:03,800 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:03,800 INFO ]: Analyzing trace with hash -1386457417, now seen corresponding path program 4 times [2018-06-22 11:35:03,800 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:03,800 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:03,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:03,801 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:35:03,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:03,812 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:03,913 INFO ]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 11:35:03,913 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:03,913 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 11:35:03,920 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:35:03,951 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:35:03,951 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:03,953 INFO ]: Computing forward predicates... [2018-06-22 11:35:04,221 INFO ]: Checked inductivity of 32 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 11:35:04,241 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:04,241 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-06-22 11:35:04,241 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:35:04,241 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:35:04,242 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:35:04,242 INFO ]: Start difference. First operand 21 states and 32 transitions. Second operand 16 states. [2018-06-22 11:35:04,805 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:04,805 INFO ]: Finished difference Result 26 states and 46 transitions. [2018-06-22 11:35:04,805 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:35:04,805 INFO ]: Start accepts. Automaton has 16 states. Word has length 25 [2018-06-22 11:35:04,805 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:04,806 INFO ]: With dead ends: 26 [2018-06-22 11:35:04,806 INFO ]: Without dead ends: 26 [2018-06-22 11:35:04,806 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:35:04,806 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:35:04,813 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 21. [2018-06-22 11:35:04,813 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:35:04,814 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2018-06-22 11:35:04,814 INFO ]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 25 [2018-06-22 11:35:04,814 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:04,814 INFO ]: Abstraction has 21 states and 30 transitions. [2018-06-22 11:35:04,814 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:35:04,814 INFO ]: Start isEmpty. Operand 21 states and 30 transitions. [2018-06-22 11:35:04,816 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:35:04,816 INFO ]: Found error trace [2018-06-22 11:35:04,816 INFO ]: trace histogram [11, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:04,816 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:04,816 INFO ]: Analyzing trace with hash 298814159, now seen corresponding path program 5 times [2018-06-22 11:35:04,816 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:04,816 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:04,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:04,817 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:35:04,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:04,838 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:04,953 INFO ]: Checked inductivity of 185 backedges. 67 proven. 25 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-06-22 11:35:04,953 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:04,953 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:04,970 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:35:05,018 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-06-22 11:35:05,018 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:05,022 INFO ]: Computing forward predicates... [2018-06-22 11:35:05,222 INFO ]: Checked inductivity of 185 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-06-22 11:35:05,242 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:05,242 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 22 [2018-06-22 11:35:05,242 INFO ]: Interpolant automaton has 22 states [2018-06-22 11:35:05,243 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 11:35:05,243 INFO ]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:35:05,243 INFO ]: Start difference. First operand 21 states and 30 transitions. Second operand 22 states. [2018-06-22 11:35:06,053 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:06,053 INFO ]: Finished difference Result 26 states and 50 transitions. [2018-06-22 11:35:06,067 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:35:06,067 INFO ]: Start accepts. Automaton has 22 states. Word has length 49 [2018-06-22 11:35:06,068 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:06,068 INFO ]: With dead ends: 26 [2018-06-22 11:35:06,068 INFO ]: Without dead ends: 0 [2018-06-22 11:35:06,068 INFO ]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 11:35:06,068 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:06,069 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:06,069 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:06,069 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:06,069 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-06-22 11:35:06,069 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:06,069 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:06,069 INFO ]: Interpolant automaton has 22 states. [2018-06-22 11:35:06,069 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:06,069 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:06,073 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:06 BoogieIcfgContainer [2018-06-22 11:35:06,073 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:06,074 INFO ]: Toolchain (without parser) took 6102.58 ms. Allocated memory was 305.7 MB in the beginning and 365.4 MB in the end (delta: 59.8 MB). Free memory was 263.1 MB in the beginning and 278.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:06,076 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:06,076 INFO ]: ChcToBoogie took 47.06 ms. Allocated memory is still 305.7 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 997.4 kB). Peak memory consumption was 997.4 kB. Max. memory is 3.6 GB. [2018-06-22 11:35:06,076 INFO ]: Boogie Preprocessor took 40.67 ms. Allocated memory is still 305.7 MB. Free memory was 261.1 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:06,077 INFO ]: RCFGBuilder took 366.72 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 253.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:06,078 INFO ]: TraceAbstraction took 5637.30 ms. Allocated memory was 305.7 MB in the beginning and 365.4 MB in the end (delta: 59.8 MB). Free memory was 252.0 MB in the beginning and 278.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:06,081 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 47.06 ms. Allocated memory is still 305.7 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 997.4 kB). Peak memory consumption was 997.4 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 40.67 ms. Allocated memory is still 305.7 MB. Free memory was 261.1 MB in the beginning and 259.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 366.72 ms. Allocated memory is still 305.7 MB. Free memory was 259.0 MB in the beginning and 253.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5637.30 ms. Allocated memory was 305.7 MB in the beginning and 365.4 MB in the end (delta: 59.8 MB). Free memory was 252.0 MB in the beginning and 278.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 32.9 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 3 procedures, 14 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 7 OverallIterations, 11 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 90 SDslu, 287 SDs, 0 SdLazy, 582 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 31264 SizeOfPredicates, 43 NumberOfNonLiveVariables, 476 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 388/654 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/mc91_95.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-06-092.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_95.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-06-092.csv Received shutdown request...