java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/19.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:44:15,661 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:44:15,662 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:44:15,674 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:44:15,674 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:44:15,675 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:44:15,676 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:44:15,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:44:15,680 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:44:15,681 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:44:15,682 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:44:15,682 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:44:15,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:44:15,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:44:15,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:44:15,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:44:15,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:44:15,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:44:15,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:44:15,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:44:15,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:44:15,694 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:44:15,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:44:15,695 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:44:15,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:44:15,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:44:15,697 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:44:15,698 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:44:15,699 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:44:15,699 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:44:15,700 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:44:15,700 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:44:15,701 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:44:15,702 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:44:15,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:44:15,702 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:44:15,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:44:15,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:44:15,717 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:44:15,719 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:44:15,720 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:44:15,720 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:44:15,720 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:44:15,720 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:44:15,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:44:15,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:44:15,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:44:15,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:44:15,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:44:15,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:44:15,722 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:44:15,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:44:15,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:44:15,722 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:44:15,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:44:15,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:44:15,723 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:44:15,724 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:44:15,724 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:44:15,768 INFO ]: Repository-Root is: /tmp [2018-06-25 08:44:15,782 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:44:15,785 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:44:15,786 INFO ]: Initializing SmtParser... [2018-06-25 08:44:15,786 INFO ]: SmtParser initialized [2018-06-25 08:44:15,787 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/19.c.smt2 [2018-06-25 08:44:15,788 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 08:44:15,870 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/19.c.smt2 unknown [2018-06-25 08:44:16,230 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/19.c.smt2 [2018-06-25 08:44:16,235 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:44:16,245 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:44:16,245 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:44:16,245 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:44:16,245 INFO ]: ChcToBoogie initialized [2018-06-25 08:44:16,257 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,340 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16 Unit [2018-06-25 08:44:16,340 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:44:16,340 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:44:16,340 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:44:16,340 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:44:16,359 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,359 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,367 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,367 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,372 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,374 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,375 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... [2018-06-25 08:44:16,378 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:44:16,379 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:44:16,379 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:44:16,379 INFO ]: RCFGBuilder initialized [2018-06-25 08:44:16,380 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:44:16,392 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:44:16,392 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:44:16,392 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:44:16,392 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:44:16,392 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:44:16,392 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 08:44:16,828 INFO ]: Using library mode [2018-06-25 08:44:16,829 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:44:16 BoogieIcfgContainer [2018-06-25 08:44:16,829 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:44:16,830 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:44:16,830 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:44:16,833 INFO ]: TraceAbstraction initialized [2018-06-25 08:44:16,834 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:44:16" (1/3) ... [2018-06-25 08:44:16,834 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522374cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:44:16, skipping insertion in model container [2018-06-25 08:44:16,834 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:44:16" (2/3) ... [2018-06-25 08:44:16,835 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522374cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:44:16, skipping insertion in model container [2018-06-25 08:44:16,835 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:44:16" (3/3) ... [2018-06-25 08:44:16,836 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:44:16,845 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:44:16,854 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:44:16,904 INFO ]: Using default assertion order modulation [2018-06-25 08:44:16,905 INFO ]: Interprodecural is true [2018-06-25 08:44:16,905 INFO ]: Hoare is false [2018-06-25 08:44:16,905 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:44:16,905 INFO ]: Backedges is TWOTRACK [2018-06-25 08:44:16,905 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:44:16,905 INFO ]: Difference is false [2018-06-25 08:44:16,905 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:44:16,905 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:44:16,922 INFO ]: Start isEmpty. Operand 33 states. [2018-06-25 08:44:16,934 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 08:44:16,934 INFO ]: Found error trace [2018-06-25 08:44:16,935 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:16,935 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:16,940 INFO ]: Analyzing trace with hash -2052862302, now seen corresponding path program 1 times [2018-06-25 08:44:16,942 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:16,942 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:16,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:16,975 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:16,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:17,054 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:17,710 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:17,712 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:44:17,712 INFO ]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-06-25 08:44:17,719 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:44:17,732 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:44:17,732 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:44:17,734 INFO ]: Start difference. First operand 33 states. Second operand 12 states. [2018-06-25 08:44:18,447 WARN ]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-06-25 08:44:18,533 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:18,533 INFO ]: Finished difference Result 68 states and 73 transitions. [2018-06-25 08:44:18,533 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-25 08:44:18,534 INFO ]: Start accepts. Automaton has 12 states. Word has length 23 [2018-06-25 08:44:18,534 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:18,544 INFO ]: With dead ends: 68 [2018-06-25 08:44:18,544 INFO ]: Without dead ends: 64 [2018-06-25 08:44:18,546 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-06-25 08:44:18,566 INFO ]: Start minimizeSevpa. Operand 64 states. [2018-06-25 08:44:18,585 INFO ]: Finished minimizeSevpa. Reduced states from 64 to 37. [2018-06-25 08:44:18,586 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-25 08:44:18,587 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-06-25 08:44:18,588 INFO ]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 23 [2018-06-25 08:44:18,588 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:18,588 INFO ]: Abstraction has 37 states and 40 transitions. [2018-06-25 08:44:18,588 INFO ]: Interpolant automaton has 12 states. [2018-06-25 08:44:18,589 INFO ]: Start isEmpty. Operand 37 states and 40 transitions. [2018-06-25 08:44:18,589 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 08:44:18,589 INFO ]: Found error trace [2018-06-25 08:44:18,589 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:18,589 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:18,590 INFO ]: Analyzing trace with hash -1823007921, now seen corresponding path program 1 times [2018-06-25 08:44:18,590 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:18,590 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:18,591 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:18,591 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:18,591 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:18,617 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:18,906 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:18,906 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:44:18,906 INFO ]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-06-25 08:44:18,908 INFO ]: Interpolant automaton has 14 states [2018-06-25 08:44:18,908 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 08:44:18,908 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-25 08:44:18,908 INFO ]: Start difference. First operand 37 states and 40 transitions. Second operand 14 states. [2018-06-25 08:44:19,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:19,965 INFO ]: Finished difference Result 72 states and 78 transitions. [2018-06-25 08:44:19,967 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-25 08:44:19,967 INFO ]: Start accepts. Automaton has 14 states. Word has length 23 [2018-06-25 08:44:19,967 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:19,968 INFO ]: With dead ends: 72 [2018-06-25 08:44:19,969 INFO ]: Without dead ends: 66 [2018-06-25 08:44:19,970 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-06-25 08:44:19,970 INFO ]: Start minimizeSevpa. Operand 66 states. [2018-06-25 08:44:19,973 INFO ]: Finished minimizeSevpa. Reduced states from 66 to 33. [2018-06-25 08:44:19,973 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-25 08:44:19,974 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-06-25 08:44:19,974 INFO ]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2018-06-25 08:44:19,974 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:19,974 INFO ]: Abstraction has 33 states and 36 transitions. [2018-06-25 08:44:19,974 INFO ]: Interpolant automaton has 14 states. [2018-06-25 08:44:19,975 INFO ]: Start isEmpty. Operand 33 states and 36 transitions. [2018-06-25 08:44:19,975 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-25 08:44:19,975 INFO ]: Found error trace [2018-06-25 08:44:19,975 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:19,975 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:19,976 INFO ]: Analyzing trace with hash 2094206110, now seen corresponding path program 1 times [2018-06-25 08:44:19,976 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:19,976 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:19,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:19,976 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:19,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:20,008 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:20,194 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:20,194 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:44:20,194 INFO ]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-06-25 08:44:20,195 INFO ]: Interpolant automaton has 16 states [2018-06-25 08:44:20,195 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-25 08:44:20,195 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-25 08:44:20,195 INFO ]: Start difference. First operand 33 states and 36 transitions. Second operand 16 states. [2018-06-25 08:44:20,826 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:20,826 INFO ]: Finished difference Result 103 states and 112 transitions. [2018-06-25 08:44:20,828 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-25 08:44:20,828 INFO ]: Start accepts. Automaton has 16 states. Word has length 29 [2018-06-25 08:44:20,829 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:20,830 INFO ]: With dead ends: 103 [2018-06-25 08:44:20,830 INFO ]: Without dead ends: 99 [2018-06-25 08:44:20,831 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2018-06-25 08:44:20,831 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-25 08:44:20,837 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 43. [2018-06-25 08:44:20,837 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-25 08:44:20,838 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-06-25 08:44:20,838 INFO ]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 29 [2018-06-25 08:44:20,838 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:20,838 INFO ]: Abstraction has 43 states and 47 transitions. [2018-06-25 08:44:20,838 INFO ]: Interpolant automaton has 16 states. [2018-06-25 08:44:20,838 INFO ]: Start isEmpty. Operand 43 states and 47 transitions. [2018-06-25 08:44:20,839 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-25 08:44:20,839 INFO ]: Found error trace [2018-06-25 08:44:20,839 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:20,839 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:20,840 INFO ]: Analyzing trace with hash 1366516619, now seen corresponding path program 1 times [2018-06-25 08:44:20,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:20,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:20,840 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:20,840 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:20,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:20,866 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:21,104 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:21,104 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:21,104 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:21,111 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:21,184 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:21,196 INFO ]: Computing forward predicates... [2018-06-25 08:44:21,702 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:21,725 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:21,725 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2018-06-25 08:44:21,725 INFO ]: Interpolant automaton has 26 states [2018-06-25 08:44:21,726 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-25 08:44:21,726 INFO ]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2018-06-25 08:44:21,726 INFO ]: Start difference. First operand 43 states and 47 transitions. Second operand 26 states. [2018-06-25 08:44:23,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:23,617 INFO ]: Finished difference Result 142 states and 154 transitions. [2018-06-25 08:44:23,617 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-06-25 08:44:23,617 INFO ]: Start accepts. Automaton has 26 states. Word has length 29 [2018-06-25 08:44:23,618 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:23,619 INFO ]: With dead ends: 142 [2018-06-25 08:44:23,619 INFO ]: Without dead ends: 136 [2018-06-25 08:44:23,621 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=786, Invalid=2754, Unknown=0, NotChecked=0, Total=3540 [2018-06-25 08:44:23,621 INFO ]: Start minimizeSevpa. Operand 136 states. [2018-06-25 08:44:23,626 INFO ]: Finished minimizeSevpa. Reduced states from 136 to 37. [2018-06-25 08:44:23,626 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-25 08:44:23,627 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-06-25 08:44:23,627 INFO ]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 29 [2018-06-25 08:44:23,627 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:23,627 INFO ]: Abstraction has 37 states and 40 transitions. [2018-06-25 08:44:23,627 INFO ]: Interpolant automaton has 26 states. [2018-06-25 08:44:23,627 INFO ]: Start isEmpty. Operand 37 states and 40 transitions. [2018-06-25 08:44:23,628 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-25 08:44:23,628 INFO ]: Found error trace [2018-06-25 08:44:23,628 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:23,628 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:23,628 INFO ]: Analyzing trace with hash 2002359534, now seen corresponding path program 1 times [2018-06-25 08:44:23,628 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:23,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:23,629 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:23,629 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:23,629 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:23,651 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:24,021 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:24,021 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:24,021 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:24,027 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:24,090 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:24,095 INFO ]: Computing forward predicates... [2018-06-25 08:44:24,453 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:24,473 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:24,473 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 28 [2018-06-25 08:44:24,473 INFO ]: Interpolant automaton has 28 states [2018-06-25 08:44:24,473 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-25 08:44:24,473 INFO ]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2018-06-25 08:44:24,474 INFO ]: Start difference. First operand 37 states and 40 transitions. Second operand 28 states. [2018-06-25 08:44:25,831 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-25 08:44:26,020 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:26,020 INFO ]: Finished difference Result 114 states and 124 transitions. [2018-06-25 08:44:26,022 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-25 08:44:26,022 INFO ]: Start accepts. Automaton has 28 states. Word has length 30 [2018-06-25 08:44:26,022 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:26,023 INFO ]: With dead ends: 114 [2018-06-25 08:44:26,023 INFO ]: Without dead ends: 111 [2018-06-25 08:44:26,024 INFO ]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080 [2018-06-25 08:44:26,024 INFO ]: Start minimizeSevpa. Operand 111 states. [2018-06-25 08:44:26,030 INFO ]: Finished minimizeSevpa. Reduced states from 111 to 50. [2018-06-25 08:44:26,030 INFO ]: Start removeUnreachable. Operand 50 states. [2018-06-25 08:44:26,031 INFO ]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2018-06-25 08:44:26,031 INFO ]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 30 [2018-06-25 08:44:26,031 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:26,031 INFO ]: Abstraction has 50 states and 55 transitions. [2018-06-25 08:44:26,031 INFO ]: Interpolant automaton has 28 states. [2018-06-25 08:44:26,031 INFO ]: Start isEmpty. Operand 50 states and 55 transitions. [2018-06-25 08:44:26,032 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-25 08:44:26,032 INFO ]: Found error trace [2018-06-25 08:44:26,032 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:26,032 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:26,032 INFO ]: Analyzing trace with hash 918821793, now seen corresponding path program 1 times [2018-06-25 08:44:26,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:26,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:26,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:26,035 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:26,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:26,065 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:26,443 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:26,444 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:26,444 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) [2018-06-25 08:44:26,457 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:26,516 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:26,520 INFO ]: Computing forward predicates... [2018-06-25 08:44:26,656 INFO ]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:26,675 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 08:44:26,675 INFO ]: Number of different interpolants: perfect sequences [19] imperfect sequences [21] total 28 [2018-06-25 08:44:26,676 INFO ]: Interpolant automaton has 28 states [2018-06-25 08:44:26,676 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-25 08:44:26,676 INFO ]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2018-06-25 08:44:26,676 INFO ]: Start difference. First operand 50 states and 55 transitions. Second operand 28 states. [2018-06-25 08:44:27,532 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:27,532 INFO ]: Finished difference Result 124 states and 136 transitions. [2018-06-25 08:44:27,533 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-25 08:44:27,533 INFO ]: Start accepts. Automaton has 28 states. Word has length 30 [2018-06-25 08:44:27,533 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:27,534 INFO ]: With dead ends: 124 [2018-06-25 08:44:27,534 INFO ]: Without dead ends: 118 [2018-06-25 08:44:27,535 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=603, Invalid=1847, Unknown=0, NotChecked=0, Total=2450 [2018-06-25 08:44:27,536 INFO ]: Start minimizeSevpa. Operand 118 states. [2018-06-25 08:44:27,541 INFO ]: Finished minimizeSevpa. Reduced states from 118 to 59. [2018-06-25 08:44:27,543 INFO ]: Start removeUnreachable. Operand 59 states. [2018-06-25 08:44:27,544 INFO ]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-06-25 08:44:27,544 INFO ]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 30 [2018-06-25 08:44:27,544 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:27,544 INFO ]: Abstraction has 59 states and 66 transitions. [2018-06-25 08:44:27,544 INFO ]: Interpolant automaton has 28 states. [2018-06-25 08:44:27,544 INFO ]: Start isEmpty. Operand 59 states and 66 transitions. [2018-06-25 08:44:27,545 INFO ]: Finished isEmpty. Found accepting run of length 37 [2018-06-25 08:44:27,545 INFO ]: Found error trace [2018-06-25 08:44:27,545 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:27,545 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:27,545 INFO ]: Analyzing trace with hash 1492511210, now seen corresponding path program 1 times [2018-06-25 08:44:27,545 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:27,546 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:27,546 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:27,546 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:27,546 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:27,578 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:27,914 INFO ]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:27,914 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:27,915 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:27,921 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:27,979 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:27,985 INFO ]: Computing forward predicates... [2018-06-25 08:44:28,407 INFO ]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:28,427 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:28,427 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-06-25 08:44:28,427 INFO ]: Interpolant automaton has 35 states [2018-06-25 08:44:28,428 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-25 08:44:28,428 INFO ]: CoverageRelationStatistics Valid=86, Invalid=1104, Unknown=0, NotChecked=0, Total=1190 [2018-06-25 08:44:28,428 INFO ]: Start difference. First operand 59 states and 66 transitions. Second operand 35 states. [2018-06-25 08:44:29,580 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:29,580 INFO ]: Finished difference Result 133 states and 146 transitions. [2018-06-25 08:44:29,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-06-25 08:44:29,583 INFO ]: Start accepts. Automaton has 35 states. Word has length 36 [2018-06-25 08:44:29,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:29,585 INFO ]: With dead ends: 133 [2018-06-25 08:44:29,585 INFO ]: Without dead ends: 130 [2018-06-25 08:44:29,586 INFO ]: 0 DeclaredPredicates, 92 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=848, Invalid=3708, Unknown=0, NotChecked=0, Total=4556 [2018-06-25 08:44:29,587 INFO ]: Start minimizeSevpa. Operand 130 states. [2018-06-25 08:44:29,593 INFO ]: Finished minimizeSevpa. Reduced states from 130 to 54. [2018-06-25 08:44:29,593 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-25 08:44:29,593 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-06-25 08:44:29,594 INFO ]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 36 [2018-06-25 08:44:29,594 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:29,594 INFO ]: Abstraction has 54 states and 60 transitions. [2018-06-25 08:44:29,594 INFO ]: Interpolant automaton has 35 states. [2018-06-25 08:44:29,594 INFO ]: Start isEmpty. Operand 54 states and 60 transitions. [2018-06-25 08:44:29,595 INFO ]: Finished isEmpty. Found accepting run of length 37 [2018-06-25 08:44:29,595 INFO ]: Found error trace [2018-06-25 08:44:29,595 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:29,595 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:29,595 INFO ]: Analyzing trace with hash -962337934, now seen corresponding path program 2 times [2018-06-25 08:44:29,595 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:29,595 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:29,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:29,596 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:29,596 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:29,612 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:29,801 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-25 08:44:29,801 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:29,801 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 [2018-06-25 08:44:29,807 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:44:29,885 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:44:29,885 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:29,890 INFO ]: Computing forward predicates... [2018-06-25 08:44:30,030 INFO ]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:30,049 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 08:44:30,049 INFO ]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2018-06-25 08:44:30,050 INFO ]: Interpolant automaton has 23 states [2018-06-25 08:44:30,050 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-25 08:44:30,050 INFO ]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-06-25 08:44:30,050 INFO ]: Start difference. First operand 54 states and 60 transitions. Second operand 23 states. [2018-06-25 08:44:30,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:30,646 INFO ]: Finished difference Result 107 states and 115 transitions. [2018-06-25 08:44:30,651 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-25 08:44:30,651 INFO ]: Start accepts. Automaton has 23 states. Word has length 36 [2018-06-25 08:44:30,651 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:30,652 INFO ]: With dead ends: 107 [2018-06-25 08:44:30,652 INFO ]: Without dead ends: 81 [2018-06-25 08:44:30,652 INFO ]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=1487, Unknown=0, NotChecked=0, Total=1806 [2018-06-25 08:44:30,652 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-25 08:44:30,657 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 58. [2018-06-25 08:44:30,657 INFO ]: Start removeUnreachable. Operand 58 states. [2018-06-25 08:44:30,658 INFO ]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-06-25 08:44:30,658 INFO ]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 36 [2018-06-25 08:44:30,658 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:30,658 INFO ]: Abstraction has 58 states and 62 transitions. [2018-06-25 08:44:30,658 INFO ]: Interpolant automaton has 23 states. [2018-06-25 08:44:30,658 INFO ]: Start isEmpty. Operand 58 states and 62 transitions. [2018-06-25 08:44:30,659 INFO ]: Finished isEmpty. Found accepting run of length 37 [2018-06-25 08:44:30,659 INFO ]: Found error trace [2018-06-25 08:44:30,659 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:30,659 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:30,659 INFO ]: Analyzing trace with hash -522232227, now seen corresponding path program 1 times [2018-06-25 08:44:30,659 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:30,659 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:30,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:30,665 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:44:30,665 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:30,691 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:30,990 INFO ]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:30,990 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:30,990 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:30,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:31,050 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:31,055 INFO ]: Computing forward predicates... [2018-06-25 08:44:31,384 INFO ]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:31,403 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:31,403 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 37 [2018-06-25 08:44:31,403 INFO ]: Interpolant automaton has 37 states [2018-06-25 08:44:31,403 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-25 08:44:31,403 INFO ]: CoverageRelationStatistics Valid=96, Invalid=1236, Unknown=0, NotChecked=0, Total=1332 [2018-06-25 08:44:31,403 INFO ]: Start difference. First operand 58 states and 62 transitions. Second operand 37 states. [2018-06-25 08:44:32,813 WARN ]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-06-25 08:44:33,176 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:33,176 INFO ]: Finished difference Result 85 states and 89 transitions. [2018-06-25 08:44:33,177 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-25 08:44:33,177 INFO ]: Start accepts. Automaton has 37 states. Word has length 36 [2018-06-25 08:44:33,177 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:33,178 INFO ]: With dead ends: 85 [2018-06-25 08:44:33,178 INFO ]: Without dead ends: 44 [2018-06-25 08:44:33,179 INFO ]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=811, Invalid=3349, Unknown=0, NotChecked=0, Total=4160 [2018-06-25 08:44:33,179 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-25 08:44:33,182 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-06-25 08:44:33,182 INFO ]: Start removeUnreachable. Operand 44 states. [2018-06-25 08:44:33,182 INFO ]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-06-25 08:44:33,183 INFO ]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 36 [2018-06-25 08:44:33,183 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:33,183 INFO ]: Abstraction has 44 states and 46 transitions. [2018-06-25 08:44:33,183 INFO ]: Interpolant automaton has 37 states. [2018-06-25 08:44:33,183 INFO ]: Start isEmpty. Operand 44 states and 46 transitions. [2018-06-25 08:44:33,183 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-25 08:44:33,183 INFO ]: Found error trace [2018-06-25 08:44:33,184 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:33,184 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:33,184 INFO ]: Analyzing trace with hash 529686818, now seen corresponding path program 2 times [2018-06-25 08:44:33,184 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:33,184 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:33,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:33,184 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:44:33,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:33,202 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:34,169 INFO ]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:34,169 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:34,169 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:34,176 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:44:34,236 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:44:34,236 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:34,241 INFO ]: Computing forward predicates... [2018-06-25 08:44:34,516 INFO ]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:44:34,536 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:34,537 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 35 [2018-06-25 08:44:34,537 INFO ]: Interpolant automaton has 35 states [2018-06-25 08:44:34,537 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-25 08:44:34,537 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1113, Unknown=0, NotChecked=0, Total=1190 [2018-06-25 08:44:34,537 INFO ]: Start difference. First operand 44 states and 46 transitions. Second operand 35 states. [2018-06-25 08:44:35,578 WARN ]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-06-25 08:44:36,041 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:36,042 INFO ]: Finished difference Result 83 states and 87 transitions. [2018-06-25 08:44:36,043 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-06-25 08:44:36,043 INFO ]: Start accepts. Automaton has 35 states. Word has length 37 [2018-06-25 08:44:36,043 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:36,043 INFO ]: With dead ends: 83 [2018-06-25 08:44:36,043 INFO ]: Without dead ends: 80 [2018-06-25 08:44:36,044 INFO ]: 0 DeclaredPredicates, 94 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=731, Invalid=3825, Unknown=0, NotChecked=0, Total=4556 [2018-06-25 08:44:36,044 INFO ]: Start minimizeSevpa. Operand 80 states. [2018-06-25 08:44:36,046 INFO ]: Finished minimizeSevpa. Reduced states from 80 to 51. [2018-06-25 08:44:36,046 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-25 08:44:36,051 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-06-25 08:44:36,051 INFO ]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 37 [2018-06-25 08:44:36,051 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:36,051 INFO ]: Abstraction has 51 states and 54 transitions. [2018-06-25 08:44:36,051 INFO ]: Interpolant automaton has 35 states. [2018-06-25 08:44:36,051 INFO ]: Start isEmpty. Operand 51 states and 54 transitions. [2018-06-25 08:44:36,053 INFO ]: Finished isEmpty. Found accepting run of length 44 [2018-06-25 08:44:36,053 INFO ]: Found error trace [2018-06-25 08:44:36,053 INFO ]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:44:36,053 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:36,053 INFO ]: Analyzing trace with hash 757710622, now seen corresponding path program 3 times [2018-06-25 08:44:36,053 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:36,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:36,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:36,053 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:44:36,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:36,072 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:36,444 INFO ]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-25 08:44:36,444 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:36,444 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:36,450 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 08:44:36,518 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 08:44:36,518 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:36,524 INFO ]: Computing forward predicates... [2018-06-25 08:44:36,912 INFO ]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-25 08:44:36,932 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:36,932 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 37 [2018-06-25 08:44:36,932 INFO ]: Interpolant automaton has 37 states [2018-06-25 08:44:36,932 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-25 08:44:36,933 INFO ]: CoverageRelationStatistics Valid=82, Invalid=1250, Unknown=0, NotChecked=0, Total=1332 [2018-06-25 08:44:36,933 INFO ]: Start difference. First operand 51 states and 54 transitions. Second operand 37 states. [2018-06-25 08:44:37,277 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-25 08:44:38,464 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:38,464 INFO ]: Finished difference Result 66 states and 69 transitions. [2018-06-25 08:44:38,487 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-25 08:44:38,487 INFO ]: Start accepts. Automaton has 37 states. Word has length 43 [2018-06-25 08:44:38,488 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:38,488 INFO ]: With dead ends: 66 [2018-06-25 08:44:38,488 INFO ]: Without dead ends: 57 [2018-06-25 08:44:38,489 INFO ]: 0 DeclaredPredicates, 102 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=647, Invalid=3643, Unknown=0, NotChecked=0, Total=4290 [2018-06-25 08:44:38,490 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-25 08:44:38,494 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 51. [2018-06-25 08:44:38,494 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-25 08:44:38,495 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-06-25 08:44:38,495 INFO ]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 43 [2018-06-25 08:44:38,495 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:38,495 INFO ]: Abstraction has 51 states and 53 transitions. [2018-06-25 08:44:38,495 INFO ]: Interpolant automaton has 37 states. [2018-06-25 08:44:38,495 INFO ]: Start isEmpty. Operand 51 states and 53 transitions. [2018-06-25 08:44:38,497 INFO ]: Finished isEmpty. Found accepting run of length 45 [2018-06-25 08:44:38,497 INFO ]: Found error trace [2018-06-25 08:44:38,497 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] [2018-06-25 08:44:38,497 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:38,498 INFO ]: Analyzing trace with hash -774294930, now seen corresponding path program 3 times [2018-06-25 08:44:38,498 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:38,498 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:38,498 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:38,498 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:44:38,498 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:38,515 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:38,933 INFO ]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:44:38,933 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:38,933 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 08:44:38,947 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:39,019 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 08:44:39,019 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:39,024 INFO ]: Computing forward predicates... [2018-06-25 08:44:39,660 INFO ]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-25 08:44:39,681 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:39,681 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 38 [2018-06-25 08:44:39,681 INFO ]: Interpolant automaton has 38 states [2018-06-25 08:44:39,681 INFO ]: Constructing interpolant automaton starting with 38 interpolants. [2018-06-25 08:44:39,682 INFO ]: CoverageRelationStatistics Valid=83, Invalid=1323, Unknown=0, NotChecked=0, Total=1406 [2018-06-25 08:44:39,682 INFO ]: Start difference. First operand 51 states and 53 transitions. Second operand 38 states. [2018-06-25 08:44:41,101 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:41,101 INFO ]: Finished difference Result 59 states and 60 transitions. [2018-06-25 08:44:41,103 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-25 08:44:41,103 INFO ]: Start accepts. Automaton has 38 states. Word has length 44 [2018-06-25 08:44:41,103 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:41,103 INFO ]: With dead ends: 59 [2018-06-25 08:44:41,103 INFO ]: Without dead ends: 56 [2018-06-25 08:44:41,104 INFO ]: 0 DeclaredPredicates, 102 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=647, Invalid=3513, Unknown=0, NotChecked=0, Total=4160 [2018-06-25 08:44:41,104 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-25 08:44:41,106 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 51. [2018-06-25 08:44:41,106 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-25 08:44:41,106 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-06-25 08:44:41,106 INFO ]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 44 [2018-06-25 08:44:41,106 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:41,106 INFO ]: Abstraction has 51 states and 52 transitions. [2018-06-25 08:44:41,106 INFO ]: Interpolant automaton has 38 states. [2018-06-25 08:44:41,106 INFO ]: Start isEmpty. Operand 51 states and 52 transitions. [2018-06-25 08:44:41,107 INFO ]: Finished isEmpty. Found accepting run of length 51 [2018-06-25 08:44:41,107 INFO ]: Found error trace [2018-06-25 08:44:41,107 INFO ]: trace histogram [5, 4, 4, 4, 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, 1] [2018-06-25 08:44:41,107 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:44:41,107 INFO ]: Analyzing trace with hash 1034512234, now seen corresponding path program 4 times [2018-06-25 08:44:41,107 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:44:41,107 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:44:41,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:41,108 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:44:41,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:44:41,131 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:41,676 INFO ]: Checked inductivity of 44 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 08:44:41,676 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:44:41,676 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:44:41,682 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 08:44:41,773 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 08:44:41,773 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:44:41,780 INFO ]: Computing forward predicates... [2018-06-25 08:44:42,031 INFO ]: Checked inductivity of 44 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-25 08:44:42,053 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:44:42,053 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 40 [2018-06-25 08:44:42,054 INFO ]: Interpolant automaton has 40 states [2018-06-25 08:44:42,054 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-25 08:44:42,054 INFO ]: CoverageRelationStatistics Valid=88, Invalid=1472, Unknown=0, NotChecked=0, Total=1560 [2018-06-25 08:44:42,054 INFO ]: Start difference. First operand 51 states and 52 transitions. Second operand 40 states. [2018-06-25 08:44:43,204 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:44:43,204 INFO ]: Finished difference Result 40 states and 41 transitions. [2018-06-25 08:44:43,204 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-06-25 08:44:43,204 INFO ]: Start accepts. Automaton has 40 states. Word has length 50 [2018-06-25 08:44:43,205 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:44:43,205 INFO ]: With dead ends: 40 [2018-06-25 08:44:43,205 INFO ]: Without dead ends: 0 [2018-06-25 08:44:43,206 INFO ]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=564, Invalid=3342, Unknown=0, NotChecked=0, Total=3906 [2018-06-25 08:44:43,206 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:44:43,206 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:44:43,206 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:44:43,206 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:44:43,206 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2018-06-25 08:44:43,206 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:44:43,206 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:44:43,206 INFO ]: Interpolant automaton has 40 states. [2018-06-25 08:44:43,206 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:44:43,206 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:44:43,211 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:44:43 BoogieIcfgContainer [2018-06-25 08:44:43,211 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:44:43,212 INFO ]: Toolchain (without parser) took 26975.98 ms. Allocated memory was 306.7 MB in the beginning and 592.4 MB in the end (delta: 285.7 MB). Free memory was 252.1 MB in the beginning and 244.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 293.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:44:43,212 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:44:43,212 INFO ]: ChcToBoogie took 94.82 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 249.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:44:43,213 INFO ]: Boogie Preprocessor took 37.62 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 08:44:43,213 INFO ]: RCFGBuilder took 450.44 ms. Allocated memory is still 306.7 MB. Free memory was 248.1 MB in the beginning and 224.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:44:43,213 INFO ]: TraceAbstraction took 26380.40 ms. Allocated memory was 306.7 MB in the beginning and 592.4 MB in the end (delta: 285.7 MB). Free memory was 224.1 MB in the beginning and 244.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 264.9 MB. Max. memory is 3.6 GB. [2018-06-25 08:44:43,215 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 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 94.82 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 249.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.62 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 450.44 ms. Allocated memory is still 306.7 MB. Free memory was 248.1 MB in the beginning and 224.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 26380.40 ms. Allocated memory was 306.7 MB in the beginning and 592.4 MB in the end (delta: 285.7 MB). Free memory was 224.1 MB in the beginning and 244.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 264.9 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 2 procedures, 33 locations, 1 error locations. SAFE Result, 26.3s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 15.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 399 SDtfs, 3493 SDslu, 8290 SDs, 0 SdLazy, 5327 SolverSat, 1376 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 980 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5490 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 13 MinimizatonAttempts, 474 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 794 ConstructedInterpolants, 0 QuantifiedInterpolants, 99492 SizeOfPredicates, 485 NumberOfNonLiveVariables, 5530 ConjunctsInSsa, 507 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 64/278 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/19.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-44-43-230.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/19.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-44-43-230.csv Received shutdown request...