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/HOLA/06.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:16,236 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:16,243 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:16,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:16,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:16,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:16,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:16,259 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:16,260 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:16,261 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:16,262 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:16,262 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:16,263 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:16,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:16,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:16,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:16,280 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:16,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:16,284 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:16,284 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:16,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:16,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:16,288 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:16,289 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:16,294 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:16,295 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:16,296 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:16,296 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:16,297 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:16,298 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:16,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:16,299 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:16,299 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:16,300 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:16,300 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:16,301 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:16,319 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:16,319 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:16,320 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:16,320 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:16,321 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:16,321 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:16,321 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:16,321 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:16,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:16,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:16,322 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:16,322 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:16,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:16,323 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:16,323 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:16,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:16,323 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:16,323 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:16,324 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:16,324 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:16,324 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:16,325 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:16,325 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:16,368 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:16,385 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:16,392 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:16,394 INFO ]: Initializing SmtParser... [2018-06-24 20:39:16,394 INFO ]: SmtParser initialized [2018-06-24 20:39:16,395 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/06.c.smt2 [2018-06-24 20:39:16,396 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 [2018-06-24 20:39:16,489 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/06.c.smt2 unknown [2018-06-24 20:39:17,050 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/06.c.smt2 [2018-06-24 20:39:17,055 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:17,060 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:17,060 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:17,060 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:17,060 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:17,071 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,166 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17 Unit [2018-06-24 20:39:17,166 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:17,167 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:17,167 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:17,167 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:17,188 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,188 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,201 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,201 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,216 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,218 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,221 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... [2018-06-24 20:39:17,225 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:17,225 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:17,225 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:17,226 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:17,226 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 20:39:17,236 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:17,236 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:17,236 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:17,236 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:17,236 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:17,236 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 [2018-06-24 20:39:18,216 INFO ]: Using library mode [2018-06-24 20:39:18,216 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:18 BoogieIcfgContainer [2018-06-24 20:39:18,216 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:18,217 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:18,217 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:18,218 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:18,218 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:18" (1/1) ... [2018-06-24 20:39:18,245 INFO ]: Initial Icfg 47 locations, 55 edges [2018-06-24 20:39:18,247 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:18,247 INFO ]: Using Maximize final states [2018-06-24 20:39:18,248 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:18,248 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:18,250 INFO ]: Using Remove sink states [2018-06-24 20:39:18,253 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:18,253 INFO ]: Using Use SBE [2018-06-24 20:39:18,269 INFO ]: SBE split 0 edges [2018-06-24 20:39:18,276 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:18,279 INFO ]: 0 new accepting states [2018-06-24 20:39:19,405 INFO ]: Removed 100 edges and 36 locations by large block encoding [2018-06-24 20:39:19,407 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:19,408 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:19,408 INFO ]: 0 new accepting states [2018-06-24 20:39:19,408 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:19,410 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:19,410 INFO ]: Encoded RCFG 9 locations, 17 edges [2018-06-24 20:39:19,411 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:19 BasicIcfg [2018-06-24 20:39:19,411 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:19,412 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:19,412 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:19,416 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:19,416 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:17" (1/4) ... [2018-06-24 20:39:19,417 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7415f98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:19, skipping insertion in model container [2018-06-24 20:39:19,417 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:17" (2/4) ... [2018-06-24 20:39:19,417 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7415f98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:19, skipping insertion in model container [2018-06-24 20:39:19,418 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:18" (3/4) ... [2018-06-24 20:39:19,418 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7415f98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:19, skipping insertion in model container [2018-06-24 20:39:19,418 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:19" (4/4) ... [2018-06-24 20:39:19,422 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:19,434 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:19,444 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:19,486 INFO ]: Using default assertion order modulation [2018-06-24 20:39:19,487 INFO ]: Interprodecural is true [2018-06-24 20:39:19,487 INFO ]: Hoare is false [2018-06-24 20:39:19,487 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:19,487 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:19,487 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:19,487 INFO ]: Difference is false [2018-06-24 20:39:19,487 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:19,487 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:19,499 INFO ]: Start isEmpty. Operand 9 states. [2018-06-24 20:39:19,508 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:39:19,508 INFO ]: Found error trace [2018-06-24 20:39:19,509 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:39:19,510 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:19,515 INFO ]: Analyzing trace with hash 40601091, now seen corresponding path program 1 times [2018-06-24 20:39:19,517 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:19,517 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:19,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:19,551 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:19,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:19,625 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:19,755 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:19,757 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:19,757 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:19,759 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:19,776 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:19,776 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:19,779 INFO ]: Start difference. First operand 9 states. Second operand 3 states. [2018-06-24 20:39:19,915 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:19,915 INFO ]: Finished difference Result 13 states and 28 transitions. [2018-06-24 20:39:19,917 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:19,918 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:39:19,918 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:19,928 INFO ]: With dead ends: 13 [2018-06-24 20:39:19,928 INFO ]: Without dead ends: 13 [2018-06-24 20:39:19,930 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 [2018-06-24 20:39:19,943 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 20:39:19,960 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-06-24 20:39:19,963 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 20:39:19,963 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-24 20:39:19,965 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 5 [2018-06-24 20:39:19,965 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:19,965 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-24 20:39:19,965 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:19,965 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-24 20:39:19,966 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:39:19,966 INFO ]: Found error trace [2018-06-24 20:39:19,966 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:19,966 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:19,966 INFO ]: Analyzing trace with hash 359673267, now seen corresponding path program 1 times [2018-06-24 20:39:19,966 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:19,966 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:19,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:19,967 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:19,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:20,039 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:20,367 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:39:20,368 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:20,368 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:39:20,369 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:39:20,369 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:39:20,369 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:20,369 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 4 states. [2018-06-24 20:39:20,708 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:20,708 INFO ]: Finished difference Result 17 states and 39 transitions. [2018-06-24 20:39:20,709 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:39:20,709 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-24 20:39:20,709 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:20,709 INFO ]: With dead ends: 17 [2018-06-24 20:39:20,709 INFO ]: Without dead ends: 17 [2018-06-24 20:39:20,710 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:20,710 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 20:39:20,712 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 11. [2018-06-24 20:39:20,712 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:39:20,713 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 23 transitions. [2018-06-24 20:39:20,713 INFO ]: Start accepts. Automaton has 11 states and 23 transitions. Word has length 7 [2018-06-24 20:39:20,714 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:20,714 INFO ]: Abstraction has 11 states and 23 transitions. [2018-06-24 20:39:20,714 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:39:20,714 INFO ]: Start isEmpty. Operand 11 states and 23 transitions. [2018-06-24 20:39:20,714 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:39:20,714 INFO ]: Found error trace [2018-06-24 20:39:20,714 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:20,714 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:20,714 INFO ]: Analyzing trace with hash -887556519, now seen corresponding path program 1 times [2018-06-24 20:39:20,714 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:20,714 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:20,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:20,715 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:20,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:20,741 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:20,804 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:20,804 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:20,804 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:39:20,805 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:20,805 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:20,805 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:20,805 INFO ]: Start difference. First operand 11 states and 23 transitions. Second operand 5 states. [2018-06-24 20:39:20,919 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:20,920 INFO ]: Finished difference Result 7 states and 13 transitions. [2018-06-24 20:39:20,920 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:20,920 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-24 20:39:20,920 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:20,920 INFO ]: With dead ends: 7 [2018-06-24 20:39:20,920 INFO ]: Without dead ends: 0 [2018-06-24 20:39:20,920 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:20,920 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:39:20,920 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:39:20,920 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:39:20,920 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:39:20,920 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-24 20:39:20,920 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:20,920 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:39:20,921 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:20,921 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:39:20,921 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:39:20,922 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:39:20,924 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:20 BasicIcfg [2018-06-24 20:39:20,924 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:39:20,925 INFO ]: Toolchain (without parser) took 3869.76 ms. Allocated memory was 302.0 MB in the beginning and 363.3 MB in the end (delta: 61.3 MB). Free memory was 232.6 MB in the beginning and 291.8 MB in the end (delta: -59.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:20,926 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 302.0 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:20,927 INFO ]: ChcToBoogie took 106.37 ms. Allocated memory is still 302.0 MB. Free memory was 232.6 MB in the beginning and 228.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:20,927 INFO ]: Boogie Preprocessor took 58.11 ms. Allocated memory is still 302.0 MB. Free memory was 228.6 MB in the beginning and 226.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:20,928 INFO ]: RCFGBuilder took 990.98 ms. Allocated memory was 302.0 MB in the beginning and 323.0 MB in the end (delta: 21.0 MB). Free memory was 226.6 MB in the beginning and 286.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:20,928 INFO ]: BlockEncodingV2 took 1193.79 ms. Allocated memory is still 323.0 MB. Free memory was 286.4 MB in the beginning and 183.8 MB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:20,929 INFO ]: TraceAbstraction took 1512.40 ms. Allocated memory was 323.0 MB in the beginning and 363.3 MB in the end (delta: 40.4 MB). Free memory was 183.8 MB in the beginning and 291.8 MB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:20,943 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 47 locations, 55 edges - StatisticsResult: Encoded RCFG 9 locations, 17 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 302.0 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.37 ms. Allocated memory is still 302.0 MB. Free memory was 232.6 MB in the beginning and 228.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 58.11 ms. Allocated memory is still 302.0 MB. Free memory was 228.6 MB in the beginning and 226.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 990.98 ms. Allocated memory was 302.0 MB in the beginning and 323.0 MB in the end (delta: 21.0 MB). Free memory was 226.6 MB in the beginning and 286.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1193.79 ms. Allocated memory is still 323.0 MB. Free memory was 286.4 MB in the beginning and 183.8 MB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1512.40 ms. Allocated memory was 323.0 MB in the beginning and 363.3 MB in the end (delta: 40.4 MB). Free memory was 183.8 MB in the beginning and 291.8 MB in the end (delta: -108.0 MB). There was no memory consumed. 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, 9 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 43 SDslu, 44 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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/06.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-39-20-957.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/06.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-39-20-957.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/06.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-39-20-957.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/06.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-39-20-957.csv Received shutdown request...