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/a-max.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:26:16,475 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:26:16,477 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:26:16,487 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:26:16,488 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:26:16,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:26:16,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:26:16,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:26:16,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:26:16,495 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:26:16,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:26:16,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:26:16,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:26:16,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:26:16,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:26:16,500 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:26:16,501 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:26:16,503 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:26:16,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:26:16,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:26:16,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:26:16,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:26:16,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:26:16,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:26:16,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:26:16,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:26:16,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:26:16,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:26:16,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:26:16,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:26:16,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:26:16,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:26:16,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:26:16,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:26:16,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:26:16,517 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 11:26:16,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:26:16,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:26:16,530 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:26:16,530 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:26:16,531 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:26:16,531 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:26:16,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:26:16,532 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:26:16,532 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:26:16,532 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:26:16,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:26:16,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:26:16,532 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:26:16,533 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:26:16,533 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:26:16,533 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:26:16,533 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:26:16,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:26:16,534 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:26:16,535 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:26:16,535 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:26:16,574 INFO ]: Repository-Root is: /tmp [2018-06-22 11:26:16,588 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:26:16,594 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:26:16,595 INFO ]: Initializing SmtParser... [2018-06-22 11:26:16,595 INFO ]: SmtParser initialized [2018-06-22 11:26:16,596 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/a-max.smt2 [2018-06-22 11:26:16,597 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 11:26:16,692 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/a-max.smt2 unknown [2018-06-22 11:26:16,943 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/a-max.smt2 [2018-06-22 11:26:16,947 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:26:16,953 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:26:16,953 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:26:16,954 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:26:16,956 INFO ]: ChcToBoogie initialized [2018-06-22 11:26:16,960 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:26:16" (1/1) ... [2018-06-22 11:26:17,003 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17 Unit [2018-06-22 11:26:17,003 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:26:17,004 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:26:17,006 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:26:17,006 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:26:17,026 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,026 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,036 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,037 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,041 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,046 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,049 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (1/1) ... [2018-06-22 11:26:17,051 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:26:17,052 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:26:17,052 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:26:17,052 INFO ]: RCFGBuilder initialized [2018-06-22 11:26:17,065 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (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 11:26:17,081 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:26:17,081 INFO ]: Found specification of procedure False [2018-06-22 11:26:17,081 INFO ]: Found implementation of procedure False [2018-06-22 11:26:17,081 INFO ]: Specification and implementation of procedure array_maxDLRunknownCLN6 given in one single declaration [2018-06-22 11:26:17,081 INFO ]: Found specification of procedure array_maxDLRunknownCLN6 [2018-06-22 11:26:17,081 INFO ]: Found implementation of procedure array_maxDLRunknownCLN6 [2018-06-22 11:26:17,081 INFO ]: Specification and implementation of procedure array_maxDLRunknownCLN4 given in one single declaration [2018-06-22 11:26:17,081 INFO ]: Found specification of procedure array_maxDLRunknownCLN4 [2018-06-22 11:26:17,081 INFO ]: Found implementation of procedure array_maxDLRunknownCLN4 [2018-06-22 11:26:17,081 INFO ]: Specification and implementation of procedure make_arrayDLRunknownCLN9 given in one single declaration [2018-06-22 11:26:17,081 INFO ]: Found specification of procedure make_arrayDLRunknownCLN9 [2018-06-22 11:26:17,081 INFO ]: Found implementation of procedure make_arrayDLRunknownCLN9 [2018-06-22 11:26:17,082 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:26:17,082 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:26:17,082 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 11:26:17,441 INFO ]: Using library mode [2018-06-22 11:26:17,442 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:26:17 BoogieIcfgContainer [2018-06-22 11:26:17,442 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:26:17,444 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:26:17,444 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:26:17,450 INFO ]: TraceAbstraction initialized [2018-06-22 11:26:17,450 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:26:16" (1/3) ... [2018-06-22 11:26:17,451 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f26d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:26:17, skipping insertion in model container [2018-06-22 11:26:17,451 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:26:17" (2/3) ... [2018-06-22 11:26:17,451 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780f26d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:26:17, skipping insertion in model container [2018-06-22 11:26:17,451 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:26:17" (3/3) ... [2018-06-22 11:26:17,457 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:26:17,467 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:26:17,478 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:26:17,526 INFO ]: Using default assertion order modulation [2018-06-22 11:26:17,526 INFO ]: Interprodecural is true [2018-06-22 11:26:17,526 INFO ]: Hoare is false [2018-06-22 11:26:17,526 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:26:17,526 INFO ]: Backedges is TWOTRACK [2018-06-22 11:26:17,526 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:26:17,526 INFO ]: Difference is false [2018-06-22 11:26:17,526 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:26:17,526 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:26:17,547 INFO ]: Start isEmpty. Operand 27 states. [2018-06-22 11:26:17,568 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:26:17,569 INFO ]: Found error trace [2018-06-22 11:26:17,570 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:26:17,570 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:17,577 INFO ]: Analyzing trace with hash 136836576, now seen corresponding path program 1 times [2018-06-22 11:26:17,579 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:17,580 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:17,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:17,615 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:17,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:17,629 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:17,656 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:26:17,666 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:26:17,666 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:26:17,668 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:26:17,682 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:26:17,683 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:26:17,684 INFO ]: Start difference. First operand 27 states. Second operand 2 states. [2018-06-22 11:26:17,711 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:17,712 INFO ]: Finished difference Result 25 states and 35 transitions. [2018-06-22 11:26:17,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:26:17,714 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:26:17,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:17,741 INFO ]: With dead ends: 25 [2018-06-22 11:26:17,741 INFO ]: Without dead ends: 25 [2018-06-22 11:26:17,743 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 11:26:17,762 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:26:17,787 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 11:26:17,788 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 11:26:17,790 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2018-06-22 11:26:17,791 INFO ]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 5 [2018-06-22 11:26:17,791 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:17,791 INFO ]: Abstraction has 25 states and 35 transitions. [2018-06-22 11:26:17,791 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:26:17,791 INFO ]: Start isEmpty. Operand 25 states and 35 transitions. [2018-06-22 11:26:17,793 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:26:17,793 INFO ]: Found error trace [2018-06-22 11:26:17,793 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:17,793 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:17,794 INFO ]: Analyzing trace with hash 1336410976, now seen corresponding path program 1 times [2018-06-22 11:26:17,794 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:17,794 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:17,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:17,795 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:17,795 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:17,826 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:17,921 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:26:17,922 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:26:17,922 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:26:17,923 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:26:17,924 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:26:17,924 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:26:17,924 INFO ]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2018-06-22 11:26:18,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:18,000 INFO ]: Finished difference Result 27 states and 38 transitions. [2018-06-22 11:26:18,001 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:26:18,001 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:26:18,001 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:18,002 INFO ]: With dead ends: 27 [2018-06-22 11:26:18,002 INFO ]: Without dead ends: 27 [2018-06-22 11:26:18,003 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 11:26:18,003 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:26:18,014 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 11:26:18,014 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:26:18,015 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2018-06-22 11:26:18,015 INFO ]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 9 [2018-06-22 11:26:18,015 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:18,016 INFO ]: Abstraction has 27 states and 38 transitions. [2018-06-22 11:26:18,016 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:26:18,016 INFO ]: Start isEmpty. Operand 27 states and 38 transitions. [2018-06-22 11:26:18,018 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:26:18,018 INFO ]: Found error trace [2018-06-22 11:26:18,018 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:18,018 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:18,018 INFO ]: Analyzing trace with hash -263450107, now seen corresponding path program 1 times [2018-06-22 11:26:18,018 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:18,018 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:18,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:18,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:18,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:18,047 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:18,291 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:26:18,291 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:26:18,291 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 11:26:18,291 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:26:18,291 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:26:18,291 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:26:18,292 INFO ]: Start difference. First operand 27 states and 38 transitions. Second operand 8 states. [2018-06-22 11:26:18,812 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:18,812 INFO ]: Finished difference Result 32 states and 48 transitions. [2018-06-22 11:26:18,813 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:26:18,813 INFO ]: Start accepts. Automaton has 8 states. Word has length 21 [2018-06-22 11:26:18,813 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:18,815 INFO ]: With dead ends: 32 [2018-06-22 11:26:18,815 INFO ]: Without dead ends: 32 [2018-06-22 11:26:18,815 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:26:18,815 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 11:26:18,821 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-06-22 11:26:18,821 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:26:18,823 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2018-06-22 11:26:18,823 INFO ]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 21 [2018-06-22 11:26:18,823 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:18,823 INFO ]: Abstraction has 27 states and 38 transitions. [2018-06-22 11:26:18,823 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:26:18,823 INFO ]: Start isEmpty. Operand 27 states and 38 transitions. [2018-06-22 11:26:18,825 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:26:18,825 INFO ]: Found error trace [2018-06-22 11:26:18,825 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:18,825 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:18,825 INFO ]: Analyzing trace with hash -1587865207, now seen corresponding path program 1 times [2018-06-22 11:26:18,825 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:18,825 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:18,826 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:18,826 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:18,826 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:18,862 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:19,086 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:26:19,087 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:26:19,087 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 11:26:19,101 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:19,136 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:19,149 INFO ]: Computing forward predicates... [2018-06-22 11:26:19,889 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:26:19,909 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:26:19,909 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2018-06-22 11:26:19,910 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:26:19,910 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:26:19,910 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:26:19,910 INFO ]: Start difference. First operand 27 states and 38 transitions. Second operand 16 states. [2018-06-22 11:26:20,726 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:20,726 INFO ]: Finished difference Result 34 states and 51 transitions. [2018-06-22 11:26:20,727 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:26:20,727 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 11:26:20,727 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:20,730 INFO ]: With dead ends: 34 [2018-06-22 11:26:20,730 INFO ]: Without dead ends: 34 [2018-06-22 11:26:20,731 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:26:20,731 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 11:26:20,738 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-06-22 11:26:20,738 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 11:26:20,739 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2018-06-22 11:26:20,739 INFO ]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 21 [2018-06-22 11:26:20,739 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:20,739 INFO ]: Abstraction has 29 states and 41 transitions. [2018-06-22 11:26:20,739 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:26:20,739 INFO ]: Start isEmpty. Operand 29 states and 41 transitions. [2018-06-22 11:26:20,741 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:26:20,741 INFO ]: Found error trace [2018-06-22 11:26:20,741 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:20,741 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:20,741 INFO ]: Analyzing trace with hash -598869006, now seen corresponding path program 2 times [2018-06-22 11:26:20,741 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:20,741 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:20,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:20,742 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:20,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:20,765 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:21,062 INFO ]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:26:21,062 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:26:21,062 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:26:21,077 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:26:21,101 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:26:21,101 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:21,104 INFO ]: Computing forward predicates... [2018-06-22 11:26:21,131 INFO ]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:26:21,151 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:26:21,151 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 11:26:21,151 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:26:21,152 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:26:21,152 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:26:21,152 INFO ]: Start difference. First operand 29 states and 41 transitions. Second operand 7 states. [2018-06-22 11:26:21,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:21,548 INFO ]: Finished difference Result 46 states and 86 transitions. [2018-06-22 11:26:21,548 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:26:21,548 INFO ]: Start accepts. Automaton has 7 states. Word has length 33 [2018-06-22 11:26:21,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:21,550 INFO ]: With dead ends: 46 [2018-06-22 11:26:21,550 INFO ]: Without dead ends: 34 [2018-06-22 11:26:21,550 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:26:21,550 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 11:26:21,557 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-06-22 11:26:21,557 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 11:26:21,559 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2018-06-22 11:26:21,559 INFO ]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 33 [2018-06-22 11:26:21,559 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:21,559 INFO ]: Abstraction has 34 states and 52 transitions. [2018-06-22 11:26:21,559 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:26:21,559 INFO ]: Start isEmpty. Operand 34 states and 52 transitions. [2018-06-22 11:26:21,561 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:26:21,561 INFO ]: Found error trace [2018-06-22 11:26:21,561 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:21,561 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:21,561 INFO ]: Analyzing trace with hash 1228690012, now seen corresponding path program 1 times [2018-06-22 11:26:21,561 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:21,561 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:21,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:21,562 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:26:21,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:21,591 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:21,745 INFO ]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 11:26:21,745 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:26:21,745 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:26:21,751 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:21,779 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:21,783 INFO ]: Computing forward predicates... [2018-06-22 11:26:21,832 INFO ]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 11:26:21,864 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:26:21,864 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-06-22 11:26:21,864 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:26:21,864 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:26:21,865 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:26:21,865 INFO ]: Start difference. First operand 34 states and 52 transitions. Second operand 12 states. [2018-06-22 11:26:22,085 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:22,085 INFO ]: Finished difference Result 43 states and 67 transitions. [2018-06-22 11:26:22,085 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:26:22,085 INFO ]: Start accepts. Automaton has 12 states. Word has length 45 [2018-06-22 11:26:22,086 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:22,087 INFO ]: With dead ends: 43 [2018-06-22 11:26:22,087 INFO ]: Without dead ends: 41 [2018-06-22 11:26:22,087 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:26:22,087 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-22 11:26:22,095 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-06-22 11:26:22,095 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-22 11:26:22,097 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2018-06-22 11:26:22,097 INFO ]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 45 [2018-06-22 11:26:22,097 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:22,097 INFO ]: Abstraction has 35 states and 54 transitions. [2018-06-22 11:26:22,097 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:26:22,097 INFO ]: Start isEmpty. Operand 35 states and 54 transitions. [2018-06-22 11:26:22,099 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:26:22,099 INFO ]: Found error trace [2018-06-22 11:26:22,099 INFO ]: trace histogram [6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:22,099 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:22,099 INFO ]: Analyzing trace with hash 696220610, now seen corresponding path program 1 times [2018-06-22 11:26:22,099 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:22,100 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:22,100 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:22,100 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:22,100 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:22,125 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:22,198 INFO ]: Checked inductivity of 82 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-06-22 11:26:22,199 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:26:22,199 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 11:26:22,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:22,252 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:22,256 INFO ]: Computing forward predicates... [2018-06-22 11:26:22,288 INFO ]: Checked inductivity of 82 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-06-22 11:26:22,307 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:26:22,307 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 11:26:22,308 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:26:22,308 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:26:22,308 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:26:22,308 INFO ]: Start difference. First operand 35 states and 54 transitions. Second operand 7 states. [2018-06-22 11:26:22,496 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:22,497 INFO ]: Finished difference Result 37 states and 56 transitions. [2018-06-22 11:26:22,497 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:26:22,497 INFO ]: Start accepts. Automaton has 7 states. Word has length 57 [2018-06-22 11:26:22,497 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:22,498 INFO ]: With dead ends: 37 [2018-06-22 11:26:22,498 INFO ]: Without dead ends: 37 [2018-06-22 11:26:22,499 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:26:22,499 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 11:26:22,504 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-06-22 11:26:22,504 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:26:22,505 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2018-06-22 11:26:22,505 INFO ]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 57 [2018-06-22 11:26:22,505 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:22,505 INFO ]: Abstraction has 33 states and 49 transitions. [2018-06-22 11:26:22,505 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:26:22,505 INFO ]: Start isEmpty. Operand 33 states and 49 transitions. [2018-06-22 11:26:22,507 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:26:22,507 INFO ]: Found error trace [2018-06-22 11:26:22,508 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:26:22,508 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:26:22,508 INFO ]: Analyzing trace with hash 1496632346, now seen corresponding path program 2 times [2018-06-22 11:26:22,508 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:26:22,508 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:26:22,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:22,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:26:22,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:26:22,529 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:22,723 INFO ]: Checked inductivity of 41 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-22 11:26:22,723 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:26:22,744 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 11:26:22,751 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:26:22,790 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:26:22,790 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:26:22,794 INFO ]: Computing forward predicates... [2018-06-22 11:26:22,961 INFO ]: Checked inductivity of 41 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 11:26:22,990 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:26:22,990 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2018-06-22 11:26:22,990 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:26:22,990 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:26:22,990 INFO ]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:26:22,990 INFO ]: Start difference. First operand 33 states and 49 transitions. Second operand 17 states. [2018-06-22 11:26:23,411 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:26:23,411 INFO ]: Finished difference Result 33 states and 49 transitions. [2018-06-22 11:26:23,412 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:26:23,412 INFO ]: Start accepts. Automaton has 17 states. Word has length 45 [2018-06-22 11:26:23,412 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:26:23,412 INFO ]: With dead ends: 33 [2018-06-22 11:26:23,412 INFO ]: Without dead ends: 0 [2018-06-22 11:26:23,413 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:26:23,413 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:26:23,413 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:26:23,413 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:26:23,413 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:26:23,413 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-06-22 11:26:23,413 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:26:23,413 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:26:23,413 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:26:23,413 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:26:23,413 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:26:23,419 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:26:23 BoogieIcfgContainer [2018-06-22 11:26:23,419 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:26:23,419 INFO ]: Toolchain (without parser) took 6471.79 ms. Allocated memory was 308.8 MB in the beginning and 367.0 MB in the end (delta: 58.2 MB). Free memory was 263.2 MB in the beginning and 252.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 68.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:26:23,421 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:26:23,421 INFO ]: ChcToBoogie took 49.76 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:26:23,422 INFO ]: Boogie Preprocessor took 47.34 ms. Allocated memory is still 308.8 MB. Free memory is still 259.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:26:23,422 INFO ]: RCFGBuilder took 390.66 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 247.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:26:23,423 INFO ]: TraceAbstraction took 5974.88 ms. Allocated memory was 308.8 MB in the beginning and 367.0 MB in the end (delta: 58.2 MB). Free memory was 247.2 MB in the beginning and 252.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 52.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:26:23,426 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.76 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.34 ms. Allocated memory is still 308.8 MB. Free memory is still 259.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 390.66 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 247.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5974.88 ms. Allocated memory was 308.8 MB in the beginning and 367.0 MB in the end (delta: 58.2 MB). Free memory was 247.2 MB in the beginning and 252.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 52.7 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 5 procedures, 27 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 249 SDtfs, 39 SDslu, 1066 SDs, 0 SdLazy, 1125 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=6, 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 35436 SizeOfPredicates, 53 NumberOfNonLiveVariables, 860 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 268/369 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/a-max.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-26-23-436.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-max.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-26-23-436.csv Received shutdown request...