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/llreve-bench/smt2/faulty__loop5!.smt2' -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:38:56,458 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:38:56,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:38:56,477 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:38:56,477 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:38:56,478 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:38:56,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:38:56,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:38:56,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:38:56,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:38:56,485 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:38:56,485 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:38:56,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:38:56,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:38:56,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:38:56,490 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:38:56,492 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:38:56,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:38:56,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:38:56,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:38:56,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:38:56,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:38:56,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:38:56,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:38:56,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:38:56,512 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:38:56,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:38:56,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:38:56,516 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:38:56,517 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:38:56,518 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:38:56,518 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:38:56,518 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:38:56,519 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:38:56,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:38:56,520 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:38:56,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:38:56,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:38:56,544 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:38:56,545 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:38:56,545 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:38:56,546 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:38:56,546 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:38:56,546 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:38:56,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:38:56,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:38:56,547 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:38:56,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:38:56,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:38:56,548 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:38:56,548 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:38:56,548 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:38:56,548 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:38:56,549 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:38:56,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:38:56,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:38:56,549 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:38:56,552 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:38:56,552 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:38:56,598 INFO ]: Repository-Root is: /tmp [2018-06-24 21:38:56,615 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:38:56,619 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:38:56,620 INFO ]: Initializing SmtParser... [2018-06-24 21:38:56,620 INFO ]: SmtParser initialized [2018-06-24 21:38:56,621 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/faulty__loop5!.smt2 [2018-06-24 21:38:56,622 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 21:38:56,715 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/faulty__loop5!.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2fab15a [2018-06-24 21:38:56,867 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/faulty__loop5!.smt2 [2018-06-24 21:38:56,872 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:38:56,879 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:38:56,880 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:38:56,880 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:38:56,880 INFO ]: ChcToBoogie initialized [2018-06-24 21:38:56,883 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,940 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56 Unit [2018-06-24 21:38:56,940 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:38:56,941 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:38:56,941 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:38:56,941 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:38:56,961 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,961 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,966 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,966 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,968 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,970 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,971 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (1/1) ... [2018-06-24 21:38:56,972 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:38:56,974 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:38:56,974 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:38:56,974 INFO ]: RCFGBuilder initialized [2018-06-24 21:38:56,975 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (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 21:38:56,989 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:38:56,989 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:38:56,989 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:38:56,989 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:38:56,989 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:38:56,989 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 21:38:57,258 INFO ]: Using library mode [2018-06-24 21:38:57,259 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:38:57 BoogieIcfgContainer [2018-06-24 21:38:57,259 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:38:57,259 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:38:57,259 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:38:57,260 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:38:57,261 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:38:57" (1/1) ... [2018-06-24 21:38:57,275 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:38:57,276 INFO ]: Using Remove infeasible edges [2018-06-24 21:38:57,277 INFO ]: Using Maximize final states [2018-06-24 21:38:57,277 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:38:57,277 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:38:57,279 INFO ]: Using Remove sink states [2018-06-24 21:38:57,280 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:38:57,280 INFO ]: Using Use SBE [2018-06-24 21:38:57,285 INFO ]: SBE split 0 edges [2018-06-24 21:38:57,290 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:38:57,292 INFO ]: 0 new accepting states [2018-06-24 21:38:57,331 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:38:57,333 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:38:57,337 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:38:57,338 INFO ]: 0 new accepting states [2018-06-24 21:38:57,338 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:38:57,338 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:38:57,338 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:38:57,339 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:38:57 BasicIcfg [2018-06-24 21:38:57,339 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:38:57,339 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:38:57,339 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:38:57,342 INFO ]: TraceAbstraction initialized [2018-06-24 21:38:57,343 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:38:56" (1/4) ... [2018-06-24 21:38:57,344 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8b626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:38:57, skipping insertion in model container [2018-06-24 21:38:57,344 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:38:56" (2/4) ... [2018-06-24 21:38:57,344 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8b626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:38:57, skipping insertion in model container [2018-06-24 21:38:57,344 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:38:57" (3/4) ... [2018-06-24 21:38:57,344 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8b626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:38:57, skipping insertion in model container [2018-06-24 21:38:57,344 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:38:57" (4/4) ... [2018-06-24 21:38:57,346 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:38:57,355 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:38:57,363 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:38:57,413 INFO ]: Using default assertion order modulation [2018-06-24 21:38:57,413 INFO ]: Interprodecural is true [2018-06-24 21:38:57,414 INFO ]: Hoare is false [2018-06-24 21:38:57,414 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:38:57,414 INFO ]: Backedges is TWOTRACK [2018-06-24 21:38:57,414 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:38:57,414 INFO ]: Difference is false [2018-06-24 21:38:57,414 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:38:57,414 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:38:57,433 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:38:57,446 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:38:57,446 INFO ]: Found error trace [2018-06-24 21:38:57,447 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:38:57,447 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:38:57,452 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:38:57,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:38:57,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:38:57,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:57,488 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:38:57,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:57,534 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:38:57,591 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:38:57,592 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:38:57,592 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:38:57,594 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:38:57,605 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:38:57,606 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:38:57,608 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:38:57,693 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:38:57,693 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:38:57,695 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:38:57,696 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:38:57,697 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:38:57,705 INFO ]: With dead ends: 7 [2018-06-24 21:38:57,705 INFO ]: Without dead ends: 7 [2018-06-24 21:38:57,707 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 21:38:57,721 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:38:57,748 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:38:57,750 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:38:57,750 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:38:57,751 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:38:57,751 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:38:57,751 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:38:57,751 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:38:57,752 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:38:57,752 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:38:57,752 INFO ]: Found error trace [2018-06-24 21:38:57,752 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:38:57,752 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:38:57,752 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-24 21:38:57,752 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:38:57,752 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:38:57,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:57,761 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:38:57,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:57,780 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:38:57,879 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:38:57,879 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:38:57,879 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:38:57,881 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:38:57,881 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:38:57,881 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:38:57,881 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 3 states. [2018-06-24 21:38:58,003 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:38:58,004 INFO ]: Finished difference Result 8 states and 13 transitions. [2018-06-24 21:38:58,008 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:38:58,008 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:38:58,008 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:38:58,009 INFO ]: With dead ends: 8 [2018-06-24 21:38:58,009 INFO ]: Without dead ends: 8 [2018-06-24 21:38:58,009 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 21:38:58,010 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:38:58,011 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 21:38:58,011 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 21:38:58,011 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-24 21:38:58,011 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 6 [2018-06-24 21:38:58,011 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:38:58,011 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-24 21:38:58,011 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:38:58,011 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-24 21:38:58,011 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:38:58,011 INFO ]: Found error trace [2018-06-24 21:38:58,011 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:38:58,011 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:38:58,012 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:38:58,012 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:38:58,012 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:38:58,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:58,012 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:38:58,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:38:58,026 INFO ]: Conjunction of SSA is sat [2018-06-24 21:38:58,031 INFO ]: Counterexample might be feasible [2018-06-24 21:38:58,043 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:38:58,044 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:38:58 BasicIcfg [2018-06-24 21:38:58,044 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:38:58,044 INFO ]: Toolchain (without parser) took 1172.35 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 232.1 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,046 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:38:58,046 INFO ]: ChcToBoogie took 60.64 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,047 INFO ]: Boogie Preprocessor took 31.95 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,047 INFO ]: RCFGBuilder took 285.05 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 254.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,048 INFO ]: BlockEncodingV2 took 79.45 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,049 INFO ]: TraceAbstraction took 704.43 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 232.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:38:58,057 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.64 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 31.95 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 285.05 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 254.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 79.45 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 704.43 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 232.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0); [L0] assume (!(hbv_False_1_Int < hbv_False_2_Int + hbv_False_2_Int) && !(hbv_False_5_Int > 0)) && !(hbv_False_3_Int == hbv_False_4_Int); [L0] hhv_INV_MAIN_42_0_Int, hhv_INV_MAIN_42_1_Int, hhv_INV_MAIN_42_2_Int, hhv_INV_MAIN_42_3_Int, hhv_INV_MAIN_42_4_Int := hbv_False_1_Int, hbv_False_3_Int, hbv_False_2_Int, hbv_False_5_Int, hbv_False_4_Int; [L0] havoc hbv_False_1_Int, hbv_False_5_Int, hbv_False_3_Int, hbv_False_2_Int, hbv_False_4_Int; [L0] assume ((hhv_INV_MAIN_42_3_Int == hbv_INV_MAIN_42_1_Int - 1 && hhv_INV_MAIN_42_4_Int == hbv_INV_MAIN_42_2_Int + 2) && !(hhv_INV_MAIN_42_0_Int < hhv_INV_MAIN_42_2_Int + hhv_INV_MAIN_42_2_Int)) && hbv_INV_MAIN_42_1_Int > 0; [L0] hhv_INV_MAIN_42_0_Int, hhv_INV_MAIN_42_1_Int, hhv_INV_MAIN_42_2_Int, hhv_INV_MAIN_42_3_Int, hhv_INV_MAIN_42_4_Int := hhv_INV_MAIN_42_0_Int, hhv_INV_MAIN_42_1_Int, hhv_INV_MAIN_42_2_Int, hbv_INV_MAIN_42_1_Int, hbv_INV_MAIN_42_2_Int; [L0] havoc hbv_INV_MAIN_42_2_Int, hbv_INV_MAIN_42_1_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__loop5!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-38-58-073.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__loop5!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-38-58-073.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__loop5!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-38-58-073.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__loop5!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-38-58-073.csv Received shutdown request...