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/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-27 02:47:35,200 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-27 02:47:35,202 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-27 02:47:35,213 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-27 02:47:35,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-27 02:47:35,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-27 02:47:35,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-27 02:47:35,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-27 02:47:35,224 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-27 02:47:35,224 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-27 02:47:35,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-27 02:47:35,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-27 02:47:35,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-27 02:47:35,230 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-27 02:47:35,231 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-27 02:47:35,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-27 02:47:35,233 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-27 02:47:35,235 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-27 02:47:35,237 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-27 02:47:35,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-27 02:47:35,239 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-27 02:47:35,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-27 02:47:35,242 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-27 02:47:35,243 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-27 02:47:35,243 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-27 02:47:35,244 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-27 02:47:35,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-27 02:47:35,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-27 02:47:35,246 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-27 02:47:35,247 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-27 02:47:35,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-27 02:47:35,248 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-06-27 02:47:35,250 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-27 02:47:35,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-27 02:47:35,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-27 02:47:35,264 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-27 02:47:35,264 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-27 02:47:35,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-27 02:47:35,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-27 02:47:35,265 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-27 02:47:35,265 INFO L133 SettingsManager]: * Use SBE=true [2018-06-27 02:47:35,266 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-27 02:47:35,266 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-27 02:47:35,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-27 02:47:35,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-27 02:47:35,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-27 02:47:35,267 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-27 02:47:35,267 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-27 02:47:35,267 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-27 02:47:35,267 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-27 02:47:35,268 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-27 02:47:35,268 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-27 02:47:35,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-27 02:47:35,268 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-27 02:47:35,270 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-27 02:47:35,270 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-27 02:47:35,308 INFO ]: Repository-Root is: /tmp [2018-06-27 02:47:35,324 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-27 02:47:35,328 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-27 02:47:35,329 INFO ]: Initializing SmtParser... [2018-06-27 02:47:35,329 INFO ]: SmtParser initialized [2018-06-27 02:47:35,330 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_1.smt2 [2018-06-27 02:47:35,331 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 [2018-06-27 02:47:35,426 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_1.smt2 unknown [2018-06-27 02:47:35,778 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_1.smt2 [2018-06-27 02:47:35,791 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-27 02:47:35,797 INFO ]: Walking toolchain with 5 elements. [2018-06-27 02:47:35,797 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-27 02:47:35,797 INFO ]: Initializing ChcToBoogie... [2018-06-27 02:47:35,797 INFO ]: ChcToBoogie initialized [2018-06-27 02:47:35,810 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,923 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35 Unit [2018-06-27 02:47:35,923 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-27 02:47:35,924 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-27 02:47:35,924 INFO ]: Initializing Boogie Preprocessor... [2018-06-27 02:47:35,924 INFO ]: Boogie Preprocessor initialized [2018-06-27 02:47:35,952 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,953 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,960 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,960 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,965 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,967 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,968 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (1/1) ... [2018-06-27 02:47:35,971 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-27 02:47:35,972 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-27 02:47:35,972 INFO ]: Initializing RCFGBuilder... [2018-06-27 02:47:35,972 INFO ]: RCFGBuilder initialized [2018-06-27 02:47:35,972 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (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) [2018-06-27 02:47:35,988 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-27 02:47:35,988 INFO ]: Found specification of procedure gotoProc [2018-06-27 02:47:35,988 INFO ]: Found implementation of procedure gotoProc [2018-06-27 02:47:35,988 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-27 02:47:35,988 INFO ]: Found specification of procedure Ultimate.START [2018-06-27 02:47:35,988 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 [2018-06-27 02:47:36,316 INFO ]: Using library mode [2018-06-27 02:47:36,317 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:47:36 BoogieIcfgContainer [2018-06-27 02:47:36,317 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-27 02:47:36,317 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-27 02:47:36,317 INFO ]: Initializing BlockEncodingV2... [2018-06-27 02:47:36,320 INFO ]: BlockEncodingV2 initialized [2018-06-27 02:47:36,320 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:47:36" (1/1) ... [2018-06-27 02:47:36,338 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-27 02:47:36,340 INFO ]: Using Remove infeasible edges [2018-06-27 02:47:36,340 INFO ]: Using Maximize final states [2018-06-27 02:47:36,341 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-27 02:47:36,341 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-27 02:47:36,343 INFO ]: Using Remove sink states [2018-06-27 02:47:36,345 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-27 02:47:36,345 INFO ]: Using Use SBE [2018-06-27 02:47:36,353 WARN ]: expecting exponential blowup for input size 13 [2018-06-27 02:47:38,036 WARN ]: expecting exponential blowup for input size 13 [2018-06-27 02:47:38,672 WARN ]: aborting because of expected exponential blowup for input size 52 [2018-06-27 02:47:39,236 WARN ]: aborting because of expected exponential blowup for input size 52 [2018-06-27 02:47:39,246 INFO ]: SBE split 2 edges [2018-06-27 02:47:39,320 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-27 02:47:39,326 INFO ]: 0 new accepting states [2018-06-27 02:48:07,160 INFO ]: Removed 4248 edges and 2 locations by large block encoding [2018-06-27 02:48:07,162 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-27 02:48:07,230 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-27 02:48:07,232 INFO ]: 0 new accepting states [2018-06-27 02:48:07,236 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-27 02:48:07,237 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-27 02:48:07,328 INFO ]: Encoded RCFG 6 locations, 4250 edges [2018-06-27 02:48:07,328 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 27.06 02:48:07 BasicIcfg [2018-06-27 02:48:07,328 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-27 02:48:07,329 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-27 02:48:07,329 INFO ]: Initializing TraceAbstraction... [2018-06-27 02:48:07,332 INFO ]: TraceAbstraction initialized [2018-06-27 02:48:07,333 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 27.06 02:47:35" (1/4) ... [2018-06-27 02:48:07,334 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5c84a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 27.06 02:48:07, skipping insertion in model container [2018-06-27 02:48:07,334 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:47:35" (2/4) ... [2018-06-27 02:48:07,334 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5c84a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 02:48:07, skipping insertion in model container [2018-06-27 02:48:07,334 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:47:36" (3/4) ... [2018-06-27 02:48:07,334 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5c84a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 02:48:07, skipping insertion in model container [2018-06-27 02:48:07,334 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 27.06 02:48:07" (4/4) ... [2018-06-27 02:48:07,336 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-27 02:48:07,345 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-27 02:48:07,352 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-27 02:48:07,394 INFO ]: Using default assertion order modulation [2018-06-27 02:48:07,395 INFO ]: Interprodecural is true [2018-06-27 02:48:07,395 INFO ]: Hoare is false [2018-06-27 02:48:07,395 INFO ]: Compute interpolants for FPandBP [2018-06-27 02:48:07,395 INFO ]: Backedges is TWOTRACK [2018-06-27 02:48:07,395 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-27 02:48:07,395 INFO ]: Difference is false [2018-06-27 02:48:07,395 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-27 02:48:07,395 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-27 02:48:07,419 INFO ]: Start isEmpty. Operand 6 states. [2018-06-27 02:48:07,443 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:48:07,443 INFO ]: Found error trace [2018-06-27 02:48:07,444 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:48:07,444 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:48:07,449 INFO ]: Analyzing trace with hash 287260481, now seen corresponding path program 1 times [2018-06-27 02:48:07,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:48:07,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:48:07,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:07,496 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:48:07,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:07,559 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:48:07,681 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:48:07,683 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:48:07,683 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:48:07,685 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:48:07,700 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:48:07,700 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:48:07,702 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-27 02:48:15,254 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:48:15,254 INFO ]: Finished difference Result 7 states and 4251 transitions. [2018-06-27 02:48:15,259 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:48:15,260 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:48:15,260 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:48:15,288 INFO ]: With dead ends: 7 [2018-06-27 02:48:15,288 INFO ]: Without dead ends: 7 [2018-06-27 02:48:15,290 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 [2018-06-27 02:48:15,308 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-27 02:48:15,378 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-27 02:48:15,380 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-27 02:48:15,387 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4251 transitions. [2018-06-27 02:48:15,388 INFO ]: Start accepts. Automaton has 7 states and 4251 transitions. Word has length 5 [2018-06-27 02:48:15,389 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:48:15,389 INFO ]: Abstraction has 7 states and 4251 transitions. [2018-06-27 02:48:15,389 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:48:15,389 INFO ]: Start isEmpty. Operand 7 states and 4251 transitions. [2018-06-27 02:48:15,391 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:48:15,391 INFO ]: Found error trace [2018-06-27 02:48:15,391 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:48:15,391 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:48:15,392 INFO ]: Analyzing trace with hash 287409436, now seen corresponding path program 1 times [2018-06-27 02:48:15,392 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:48:15,392 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:48:15,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:15,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:48:15,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:15,408 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:48:15,473 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:48:15,473 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:48:15,473 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:48:15,474 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:48:15,475 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:48:15,475 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:48:15,475 INFO ]: Start difference. First operand 7 states and 4251 transitions. Second operand 3 states. [2018-06-27 02:48:22,059 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:48:22,059 INFO ]: Finished difference Result 10 states and 4302 transitions. [2018-06-27 02:48:22,059 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:48:22,059 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:48:22,059 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:48:22,068 INFO ]: With dead ends: 10 [2018-06-27 02:48:22,068 INFO ]: Without dead ends: 10 [2018-06-27 02:48:22,068 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 [2018-06-27 02:48:22,069 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-27 02:48:22,093 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-27 02:48:22,093 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-27 02:48:22,100 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4300 transitions. [2018-06-27 02:48:22,100 INFO ]: Start accepts. Automaton has 8 states and 4300 transitions. Word has length 5 [2018-06-27 02:48:22,100 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:48:22,100 INFO ]: Abstraction has 8 states and 4300 transitions. [2018-06-27 02:48:22,100 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:48:22,100 INFO ]: Start isEmpty. Operand 8 states and 4300 transitions. [2018-06-27 02:48:22,103 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:48:22,103 INFO ]: Found error trace [2018-06-27 02:48:22,103 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:48:22,103 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:48:22,103 INFO ]: Analyzing trace with hash 287410397, now seen corresponding path program 1 times [2018-06-27 02:48:22,103 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:48:22,103 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:48:22,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:22,104 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:48:22,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:22,136 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:48:22,204 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:48:22,204 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:48:22,204 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:48:22,204 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:48:22,204 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:48:22,204 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:48:22,204 INFO ]: Start difference. First operand 8 states and 4300 transitions. Second operand 3 states. [2018-06-27 02:48:27,105 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:48:27,105 INFO ]: Finished difference Result 12 states and 4400 transitions. [2018-06-27 02:48:27,107 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:48:27,107 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:48:27,107 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:48:27,112 INFO ]: With dead ends: 12 [2018-06-27 02:48:27,112 INFO ]: Without dead ends: 12 [2018-06-27 02:48:27,112 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 [2018-06-27 02:48:27,112 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-27 02:48:27,137 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-27 02:48:27,137 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-27 02:48:27,146 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4398 transitions. [2018-06-27 02:48:27,146 INFO ]: Start accepts. Automaton has 10 states and 4398 transitions. Word has length 5 [2018-06-27 02:48:27,146 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:48:27,146 INFO ]: Abstraction has 10 states and 4398 transitions. [2018-06-27 02:48:27,146 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:48:27,146 INFO ]: Start isEmpty. Operand 10 states and 4398 transitions. [2018-06-27 02:48:27,149 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:48:27,149 INFO ]: Found error trace [2018-06-27 02:48:27,149 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:48:27,149 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:48:27,149 INFO ]: Analyzing trace with hash 287352737, now seen corresponding path program 1 times [2018-06-27 02:48:27,149 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:48:27,149 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:48:27,150 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:27,150 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:48:27,150 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:27,162 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:48:27,206 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:48:27,206 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:48:27,206 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:48:27,206 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:48:27,206 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:48:27,206 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:48:27,206 INFO ]: Start difference. First operand 10 states and 4398 transitions. Second operand 3 states. [2018-06-27 02:48:32,011 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:48:32,011 INFO ]: Finished difference Result 16 states and 4530 transitions. [2018-06-27 02:48:32,014 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:48:32,014 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:48:32,014 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:48:32,021 INFO ]: With dead ends: 16 [2018-06-27 02:48:32,021 INFO ]: Without dead ends: 16 [2018-06-27 02:48:32,021 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 [2018-06-27 02:48:32,021 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-27 02:48:32,041 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-06-27 02:48:32,041 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-27 02:48:32,048 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4526 transitions. [2018-06-27 02:48:32,049 INFO ]: Start accepts. Automaton has 12 states and 4526 transitions. Word has length 5 [2018-06-27 02:48:32,049 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:48:32,049 INFO ]: Abstraction has 12 states and 4526 transitions. [2018-06-27 02:48:32,049 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:48:32,049 INFO ]: Start isEmpty. Operand 12 states and 4526 transitions. [2018-06-27 02:48:32,051 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:48:32,051 INFO ]: Found error trace [2018-06-27 02:48:32,051 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:48:32,051 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:48:32,051 INFO ]: Analyzing trace with hash 287498809, now seen corresponding path program 1 times [2018-06-27 02:48:32,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:48:32,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:48:32,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:32,053 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:48:32,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:48:32,069 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:48:32,134 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:48:32,134 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:48:32,134 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:48:32,134 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:48:32,134 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:48:32,135 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:48:32,135 INFO ]: Start difference. First operand 12 states and 4526 transitions. Second operand 3 states. Received shutdown request... [2018-06-27 02:48:36,393 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:48:36,393 WARN ]: Verification canceled [2018-06-27 02:48:36,396 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-27 02:48:36,396 WARN ]: Timeout [2018-06-27 02:48:36,397 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 02:48:36 BasicIcfg [2018-06-27 02:48:36,397 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-27 02:48:36,397 INFO ]: Toolchain (without parser) took 60606.23 ms. Allocated memory was 303.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 251.7 MB in the beginning and 317.1 MB in the end (delta: -65.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-27 02:48:36,399 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-27 02:48:36,399 INFO ]: ChcToBoogie took 126.49 ms. Allocated memory is still 303.6 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-27 02:48:36,400 INFO ]: Boogie Preprocessor took 47.08 ms. Allocated memory is still 303.6 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-27 02:48:36,400 INFO ]: RCFGBuilder took 345.03 ms. Allocated memory is still 303.6 MB. Free memory was 246.7 MB in the beginning and 226.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. [2018-06-27 02:48:36,401 INFO ]: BlockEncodingV2 took 31011.15 ms. Allocated memory was 303.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 226.6 MB in the beginning and 213.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-27 02:48:36,401 INFO ]: TraceAbstraction took 29067.25 ms. Allocated memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -58.7 MB). Free memory was 213.0 MB in the beginning and 317.1 MB in the end (delta: -104.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-27 02:48:36,405 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 4250 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 126.49 ms. Allocated memory is still 303.6 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.08 ms. Allocated memory is still 303.6 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 345.03 ms. Allocated memory is still 303.6 MB. Free memory was 246.7 MB in the beginning and 226.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 31011.15 ms. Allocated memory was 303.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 226.6 MB in the beginning and 213.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. * TraceAbstraction took 29067.25 ms. Allocated memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -58.7 MB). Free memory was 213.0 MB in the beginning and 317.1 MB in the end (delta: -104.1 MB). There was no memory consumed. 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 BasicCegarLoop was constructing difference of abstraction (12states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (2 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 29.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 28.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21011 SDtfs, 84 SDslu, 13 SDs, 0 SdLazy, 10850 SolverSat, 10831 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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/PRODUCER_CONSUMMER_luke_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-27_02-48-36-416.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-27_02-48-36-416.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-27_02-48-36-416.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-27_02-48-36-416.csv Completed graceful shutdown