java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/Consistency/graham.28.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:28:14,060 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:28:14,062 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:28:14,078 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:28:14,078 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:28:14,079 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:28:14,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:28:14,082 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:28:14,083 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:28:14,084 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:28:14,085 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:28:14,085 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:28:14,088 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:28:14,089 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:28:14,090 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:28:14,090 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:28:14,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:28:14,097 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:28:14,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:28:14,113 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:28:14,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:28:14,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:28:14,117 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:28:14,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:28:14,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:28:14,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:28:14,118 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:28:14,119 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:28:14,120 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:28:14,121 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:28:14,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:28:14,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:28:14,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:28:14,126 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:28:14,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:28:14,128 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:28:14,128 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:28:14,155 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:28:14,156 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:28:14,156 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:28:14,156 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:28:14,157 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:28:14,157 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:28:14,157 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:28:14,158 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:28:14,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:28:14,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:28:14,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:28:14,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:28:14,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:28:14,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:28:14,160 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:28:14,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:28:14,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:28:14,160 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:28:14,160 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:28:14,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:28:14,161 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:28:14,164 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:28:14,164 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:28:14,220 INFO ]: Repository-Root is: /tmp [2018-06-26 17:28:14,236 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:28:14,242 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:28:14,244 INFO ]: Initializing SmtParser... [2018-06-26 17:28:14,244 INFO ]: SmtParser initialized [2018-06-26 17:28:14,245 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 [2018-06-26 17:28:14,246 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 [2018-06-26 17:28:14,325 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 unknown [2018-06-26 17:28:14,842 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.28.smt2 [2018-06-26 17:28:14,850 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:28:14,857 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:28:14,858 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:28:14,858 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:28:14,858 INFO ]: ChcToBoogie initialized [2018-06-26 17:28:14,861 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:14,965 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14 Unit [2018-06-26 17:28:14,969 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:28:14,970 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:28:14,970 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:28:14,970 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:28:14,991 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:14,991 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,004 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,005 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,023 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,032 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,036 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (1/1) ... [2018-06-26 17:28:15,041 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:28:15,041 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:28:15,041 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:28:15,041 INFO ]: RCFGBuilder initialized [2018-06-26 17:28:15,042 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (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) [2018-06-26 17:28:15,056 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:28:15,056 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:28:15,056 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:28:15,056 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:28:15,056 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:28:15,056 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 [2018-06-26 17:28:16,182 INFO ]: Using library mode [2018-06-26 17:28:16,183 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:28:16 BoogieIcfgContainer [2018-06-26 17:28:16,183 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:28:16,183 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:28:16,183 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:28:16,184 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:28:16,185 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:28:16" (1/1) ... [2018-06-26 17:28:16,222 INFO ]: Initial Icfg 145 locations, 278 edges [2018-06-26 17:28:16,224 INFO ]: Using Remove infeasible edges [2018-06-26 17:28:16,224 INFO ]: Using Maximize final states [2018-06-26 17:28:16,225 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:28:16,225 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:28:16,226 INFO ]: Using Remove sink states [2018-06-26 17:28:16,227 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:28:16,227 INFO ]: Using Use SBE [2018-06-26 17:28:16,239 INFO ]: SBE split 0 edges [2018-06-26 17:28:16,256 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 17:28:16,258 INFO ]: 0 new accepting states [2018-06-26 17:28:16,921 INFO ]: Removed 47 edges and 7 locations by large block encoding [2018-06-26 17:28:16,925 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-26 17:28:16,929 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:28:16,930 INFO ]: 0 new accepting states [2018-06-26 17:28:16,936 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:28:16,937 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:28:16,942 INFO ]: Encoded RCFG 135 locations, 267 edges [2018-06-26 17:28:16,943 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:28:16 BasicIcfg [2018-06-26 17:28:16,943 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:28:16,944 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:28:16,944 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:28:16,947 INFO ]: TraceAbstraction initialized [2018-06-26 17:28:16,947 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:28:14" (1/4) ... [2018-06-26 17:28:16,948 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fbd125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:28:16, skipping insertion in model container [2018-06-26 17:28:16,948 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:28:14" (2/4) ... [2018-06-26 17:28:16,948 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fbd125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:28:16, skipping insertion in model container [2018-06-26 17:28:16,948 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:28:16" (3/4) ... [2018-06-26 17:28:16,948 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fbd125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:28:16, skipping insertion in model container [2018-06-26 17:28:16,949 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:28:16" (4/4) ... [2018-06-26 17:28:16,951 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:28:16,962 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:28:16,976 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:28:17,019 INFO ]: Using default assertion order modulation [2018-06-26 17:28:17,020 INFO ]: Interprodecural is true [2018-06-26 17:28:17,020 INFO ]: Hoare is false [2018-06-26 17:28:17,020 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:28:17,020 INFO ]: Backedges is TWOTRACK [2018-06-26 17:28:17,020 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:28:17,020 INFO ]: Difference is false [2018-06-26 17:28:17,020 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:28:17,020 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:28:17,041 INFO ]: Start isEmpty. Operand 135 states. [2018-06-26 17:28:17,078 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:28:17,078 INFO ]: Found error trace [2018-06-26 17:28:17,079 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:28:17,079 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:17,084 INFO ]: Analyzing trace with hash 173900682, now seen corresponding path program 1 times [2018-06-26 17:28:17,086 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:17,086 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:17,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:17,133 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:17,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:17,199 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:17,389 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:28:17,392 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:17,393 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:28:17,394 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:28:17,409 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:28:17,410 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:28:17,415 INFO ]: Start difference. First operand 135 states. Second operand 3 states. [2018-06-26 17:28:19,505 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:19,505 INFO ]: Finished difference Result 267 states and 530 transitions. [2018-06-26 17:28:19,506 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:28:19,507 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:28:19,507 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:19,549 INFO ]: With dead ends: 267 [2018-06-26 17:28:19,549 INFO ]: Without dead ends: 267 [2018-06-26 17:28:19,551 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:28:19,569 INFO ]: Start minimizeSevpa. Operand 267 states. [2018-06-26 17:28:19,695 INFO ]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-06-26 17:28:19,697 INFO ]: Start removeUnreachable. Operand 267 states. [2018-06-26 17:28:19,720 INFO ]: Finished removeUnreachable. Reduced from 267 states to 267 states and 530 transitions. [2018-06-26 17:28:19,721 INFO ]: Start accepts. Automaton has 267 states and 530 transitions. Word has length 5 [2018-06-26 17:28:19,722 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:19,722 INFO ]: Abstraction has 267 states and 530 transitions. [2018-06-26 17:28:19,722 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:28:19,722 INFO ]: Start isEmpty. Operand 267 states and 530 transitions. [2018-06-26 17:28:19,734 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:28:19,734 INFO ]: Found error trace [2018-06-26 17:28:19,734 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:28:19,734 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:19,735 INFO ]: Analyzing trace with hash 173958342, now seen corresponding path program 1 times [2018-06-26 17:28:19,735 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:19,735 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:19,736 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:19,736 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:19,736 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:19,766 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:19,873 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:28:19,873 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:19,873 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:28:19,874 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:28:19,875 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:28:19,875 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:28:19,875 INFO ]: Start difference. First operand 267 states and 530 transitions. Second operand 3 states. [2018-06-26 17:28:21,774 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:21,774 INFO ]: Finished difference Result 399 states and 794 transitions. [2018-06-26 17:28:21,775 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:28:21,775 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:28:21,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:21,803 INFO ]: With dead ends: 399 [2018-06-26 17:28:21,804 INFO ]: Without dead ends: 399 [2018-06-26 17:28:21,804 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:28:21,805 INFO ]: Start minimizeSevpa. Operand 399 states. [2018-06-26 17:28:21,904 INFO ]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-06-26 17:28:21,904 INFO ]: Start removeUnreachable. Operand 399 states. [2018-06-26 17:28:21,934 INFO ]: Finished removeUnreachable. Reduced from 399 states to 399 states and 794 transitions. [2018-06-26 17:28:21,934 INFO ]: Start accepts. Automaton has 399 states and 794 transitions. Word has length 5 [2018-06-26 17:28:21,934 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:21,935 INFO ]: Abstraction has 399 states and 794 transitions. [2018-06-26 17:28:21,935 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:28:21,935 INFO ]: Start isEmpty. Operand 399 states and 794 transitions. [2018-06-26 17:28:21,960 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:28:21,960 INFO ]: Found error trace [2018-06-26 17:28:21,961 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:28:21,961 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:21,961 INFO ]: Analyzing trace with hash -1700351082, now seen corresponding path program 1 times [2018-06-26 17:28:21,961 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:21,961 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:21,962 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:21,962 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:21,962 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:22,009 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:22,436 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:22,436 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:22,436 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:28:22,436 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:28:22,436 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:28:22,437 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:28:22,437 INFO ]: Start difference. First operand 399 states and 794 transitions. Second operand 5 states. [2018-06-26 17:28:25,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:25,712 INFO ]: Finished difference Result 840 states and 2145 transitions. [2018-06-26 17:28:25,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 17:28:25,713 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-26 17:28:25,713 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:25,876 INFO ]: With dead ends: 840 [2018-06-26 17:28:25,876 INFO ]: Without dead ends: 739 [2018-06-26 17:28:25,877 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:28:25,877 INFO ]: Start minimizeSevpa. Operand 739 states. [2018-06-26 17:28:26,092 INFO ]: Finished minimizeSevpa. Reduced states from 739 to 611. [2018-06-26 17:28:26,092 INFO ]: Start removeUnreachable. Operand 611 states. [2018-06-26 17:28:26,123 INFO ]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1348 transitions. [2018-06-26 17:28:26,123 INFO ]: Start accepts. Automaton has 611 states and 1348 transitions. Word has length 9 [2018-06-26 17:28:26,123 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:26,123 INFO ]: Abstraction has 611 states and 1348 transitions. [2018-06-26 17:28:26,123 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:28:26,123 INFO ]: Start isEmpty. Operand 611 states and 1348 transitions. [2018-06-26 17:28:26,153 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:28:26,153 INFO ]: Found error trace [2018-06-26 17:28:26,153 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:28:26,153 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:26,153 INFO ]: Analyzing trace with hash 267771761, now seen corresponding path program 1 times [2018-06-26 17:28:26,154 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:26,154 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:26,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:26,154 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:26,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:26,206 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:26,542 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:26,542 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:26,542 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:28:26,542 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:28:26,542 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:28:26,542 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:28:26,542 INFO ]: Start difference. First operand 611 states and 1348 transitions. Second operand 5 states. [2018-06-26 17:28:30,451 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:30,451 INFO ]: Finished difference Result 1379 states and 4311 transitions. [2018-06-26 17:28:30,451 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 17:28:30,451 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-26 17:28:30,451 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:30,699 INFO ]: With dead ends: 1379 [2018-06-26 17:28:30,699 INFO ]: Without dead ends: 1373 [2018-06-26 17:28:30,699 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:28:30,700 INFO ]: Start minimizeSevpa. Operand 1373 states. [2018-06-26 17:28:30,966 INFO ]: Finished minimizeSevpa. Reduced states from 1373 to 985. [2018-06-26 17:28:30,966 INFO ]: Start removeUnreachable. Operand 985 states. [2018-06-26 17:28:30,999 INFO ]: Finished removeUnreachable. Reduced from 985 states to 985 states and 2672 transitions. [2018-06-26 17:28:30,999 INFO ]: Start accepts. Automaton has 985 states and 2672 transitions. Word has length 9 [2018-06-26 17:28:30,999 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:30,999 INFO ]: Abstraction has 985 states and 2672 transitions. [2018-06-26 17:28:30,999 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:28:30,999 INFO ]: Start isEmpty. Operand 985 states and 2672 transitions. [2018-06-26 17:28:31,031 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:28:31,031 INFO ]: Found error trace [2018-06-26 17:28:31,031 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:28:31,031 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:31,032 INFO ]: Analyzing trace with hash 270542324, now seen corresponding path program 1 times [2018-06-26 17:28:31,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:31,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:31,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:31,033 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:31,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:31,067 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:31,167 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:31,167 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:31,167 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:28:31,167 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:28:31,167 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:28:31,167 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:28:31,167 INFO ]: Start difference. First operand 985 states and 2672 transitions. Second operand 5 states. [2018-06-26 17:28:34,640 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:34,640 INFO ]: Finished difference Result 1818 states and 6672 transitions. [2018-06-26 17:28:34,640 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 17:28:34,640 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-26 17:28:34,640 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:34,809 INFO ]: With dead ends: 1818 [2018-06-26 17:28:34,809 INFO ]: Without dead ends: 1660 [2018-06-26 17:28:34,809 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:28:34,810 INFO ]: Start minimizeSevpa. Operand 1660 states. [2018-06-26 17:28:35,264 INFO ]: Finished minimizeSevpa. Reduced states from 1660 to 1165. [2018-06-26 17:28:35,264 INFO ]: Start removeUnreachable. Operand 1165 states. [2018-06-26 17:28:35,484 INFO ]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 3770 transitions. [2018-06-26 17:28:35,484 INFO ]: Start accepts. Automaton has 1165 states and 3770 transitions. Word has length 9 [2018-06-26 17:28:35,515 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:35,515 INFO ]: Abstraction has 1165 states and 3770 transitions. [2018-06-26 17:28:35,515 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:28:35,516 INFO ]: Start isEmpty. Operand 1165 states and 3770 transitions. [2018-06-26 17:28:35,564 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 17:28:35,564 INFO ]: Found error trace [2018-06-26 17:28:35,564 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:28:35,564 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:35,565 INFO ]: Analyzing trace with hash 337524938, now seen corresponding path program 1 times [2018-06-26 17:28:35,565 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:35,565 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:35,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:35,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:35,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:35,591 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:35,740 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:35,740 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:28:35,740 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 [2018-06-26 17:28:35,748 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:35,824 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:35,839 INFO ]: Computing forward predicates... [2018-06-26 17:28:36,057 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:36,080 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:28:36,080 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-26 17:28:36,080 INFO ]: Interpolant automaton has 10 states [2018-06-26 17:28:36,080 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-26 17:28:36,080 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-26 17:28:36,080 INFO ]: Start difference. First operand 1165 states and 3770 transitions. Second operand 10 states. [2018-06-26 17:28:53,265 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:28:53,265 INFO ]: Finished difference Result 4249 states and 21060 transitions. [2018-06-26 17:28:53,266 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-06-26 17:28:53,266 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-26 17:28:53,266 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:28:54,243 INFO ]: With dead ends: 4249 [2018-06-26 17:28:54,243 INFO ]: Without dead ends: 2631 [2018-06-26 17:28:54,243 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-06-26 17:28:54,244 INFO ]: Start minimizeSevpa. Operand 2631 states. [2018-06-26 17:28:55,452 INFO ]: Finished minimizeSevpa. Reduced states from 2631 to 1856. [2018-06-26 17:28:55,454 INFO ]: Start removeUnreachable. Operand 1856 states. [2018-06-26 17:28:55,543 INFO ]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 6396 transitions. [2018-06-26 17:28:55,543 INFO ]: Start accepts. Automaton has 1856 states and 6396 transitions. Word has length 10 [2018-06-26 17:28:55,543 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:28:55,543 INFO ]: Abstraction has 1856 states and 6396 transitions. [2018-06-26 17:28:55,543 INFO ]: Interpolant automaton has 10 states. [2018-06-26 17:28:55,543 INFO ]: Start isEmpty. Operand 1856 states and 6396 transitions. [2018-06-26 17:28:55,597 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 17:28:55,597 INFO ]: Found error trace [2018-06-26 17:28:55,597 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:28:55,597 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:28:55,598 INFO ]: Analyzing trace with hash -325209, now seen corresponding path program 1 times [2018-06-26 17:28:55,598 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:28:55,598 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:28:55,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:55,598 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:28:55,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:28:55,625 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:28:55,927 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:28:55,927 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:28:55,927 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-26 17:28:55,928 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:28:55,928 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:28:55,928 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:28:55,928 INFO ]: Start difference. First operand 1856 states and 6396 transitions. Second operand 6 states. [2018-06-26 17:29:01,173 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:29:01,173 INFO ]: Finished difference Result 4384 states and 21908 transitions. [2018-06-26 17:29:01,205 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 17:29:01,205 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-26 17:29:01,206 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:29:02,007 INFO ]: With dead ends: 4384 [2018-06-26 17:29:02,007 INFO ]: Without dead ends: 4384 [2018-06-26 17:29:02,008 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-26 17:29:02,010 INFO ]: Start minimizeSevpa. Operand 4384 states. [2018-06-26 17:29:03,264 INFO ]: Finished minimizeSevpa. Reduced states from 4384 to 2390. [2018-06-26 17:29:03,264 INFO ]: Start removeUnreachable. Operand 2390 states. [2018-06-26 17:29:03,424 INFO ]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 8212 transitions. [2018-06-26 17:29:03,424 INFO ]: Start accepts. Automaton has 2390 states and 8212 transitions. Word has length 10 [2018-06-26 17:29:03,425 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:29:03,425 INFO ]: Abstraction has 2390 states and 8212 transitions. [2018-06-26 17:29:03,425 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:29:03,425 INFO ]: Start isEmpty. Operand 2390 states and 8212 transitions. [2018-06-26 17:29:03,478 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 17:29:03,478 INFO ]: Found error trace [2018-06-26 17:29:03,478 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:29:03,478 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:29:03,479 INFO ]: Analyzing trace with hash 85562244, now seen corresponding path program 1 times [2018-06-26 17:29:03,479 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:29:03,479 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:29:03,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:29:03,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:29:03,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:29:04,745 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:29:04,940 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:29:04,940 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:29:04,940 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-26 17:29:04,940 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:29:04,940 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:29:04,940 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:29:04,940 INFO ]: Start difference. First operand 2390 states and 8212 transitions. Second operand 6 states. [2018-06-26 17:29:10,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:29:10,828 INFO ]: Finished difference Result 6203 states and 30663 transitions. [2018-06-26 17:29:10,828 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 17:29:10,828 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-26 17:29:10,828 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:29:12,220 INFO ]: With dead ends: 6203 [2018-06-26 17:29:12,220 INFO ]: Without dead ends: 6202 [2018-06-26 17:29:12,220 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-26 17:29:12,222 INFO ]: Start minimizeSevpa. Operand 6202 states. Received shutdown request... [2018-06-26 17:29:12,829 WARN ]: Verification canceled [2018-06-26 17:29:12,831 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:29:12,831 WARN ]: Timeout [2018-06-26 17:29:12,832 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:29:12 BasicIcfg [2018-06-26 17:29:12,832 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:29:12,833 INFO ]: Toolchain (without parser) took 57981.69 ms. Allocated memory was 307.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 249.7 MB in the beginning and 1.1 GB in the end (delta: -860.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,834 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:29:12,834 INFO ]: ChcToBoogie took 111.86 ms. Allocated memory is still 307.2 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,835 INFO ]: Boogie Preprocessor took 70.72 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,835 INFO ]: RCFGBuilder took 1141.45 ms. Allocated memory was 307.2 MB in the beginning and 324.0 MB in the end (delta: 16.8 MB). Free memory was 243.7 MB in the beginning and 283.9 MB in the end (delta: -40.2 MB). Peak memory consumption was 63.8 MB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,842 INFO ]: BlockEncodingV2 took 759.83 ms. Allocated memory is still 324.0 MB. Free memory was 283.9 MB in the beginning and 239.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,843 INFO ]: TraceAbstraction took 55887.84 ms. Allocated memory was 324.0 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 239.2 MB in the beginning and 1.1 GB in the end (delta: -870.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-26 17:29:12,845 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 145 locations, 278 edges - StatisticsResult: Encoded RCFG 135 locations, 267 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.86 ms. Allocated memory is still 307.2 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 70.72 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1141.45 ms. Allocated memory was 307.2 MB in the beginning and 324.0 MB in the end (delta: 16.8 MB). Free memory was 243.7 MB in the beginning and 283.9 MB in the end (delta: -40.2 MB). Peak memory consumption was 63.8 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 759.83 ms. Allocated memory is still 324.0 MB. Free memory was 283.9 MB in the beginning and 239.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55887.84 ms. Allocated memory was 324.0 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 239.2 MB in the beginning and 1.1 GB in the end (delta: -870.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 135 locations, 1 error locations. TIMEOUT Result, 55.8s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 46.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6246 SDtfs, 1576 SDslu, 10550 SDs, 0 SdLazy, 28248 SolverSat, 6205 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2390occurred in iteration=7, 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: 4.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 3780 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 10 NumberOfNonLiveVariables, 461 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 14/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-29-12-862.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-29-12-862.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-29-12-862.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.28.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-29-12-862.csv Completed graceful shutdown