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__nested-while!.smt2' -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:41:50,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:41:50,348 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:41:50,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:41:50,360 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:41:50,361 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:41:50,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:41:50,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:41:50,369 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:41:50,370 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:41:50,371 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:41:50,371 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:41:50,372 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:41:50,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:41:50,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:41:50,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:41:50,375 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:41:50,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:41:50,378 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:41:50,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:41:50,381 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:41:50,382 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:41:50,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:41:50,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:41:50,385 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:41:50,385 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:41:50,386 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:41:50,387 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:41:50,388 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:41:50,389 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:41:50,389 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:41:50,390 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:41:50,390 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:41:50,391 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:41:50,391 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:41:50,392 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:41:50,392 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:41:50,406 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:41:50,406 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:41:50,407 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:41:50,407 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:41:50,408 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:41:50,408 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:41:50,408 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:41:50,408 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:41:50,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:41:50,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:41:50,409 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:41:50,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:41:50,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:41:50,410 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:41:50,410 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:41:50,410 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:41:50,410 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:41:50,410 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:41:50,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:41:50,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:41:50,411 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:41:50,412 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:41:50,413 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:41:50,451 INFO ]: Repository-Root is: /tmp [2018-06-26 18:41:50,467 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:41:50,470 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:41:50,472 INFO ]: Initializing SmtParser... [2018-06-26 18:41:50,472 INFO ]: SmtParser initialized [2018-06-26 18:41:50,472 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/faulty__nested-while!.smt2 [2018-06-26 18:41:50,474 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-26 18:41:50,566 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/faulty__nested-while!.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@11a63f6c [2018-06-26 18:41:50,791 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/faulty__nested-while!.smt2 [2018-06-26 18:41:50,799 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:41:50,804 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:41:50,805 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:41:50,805 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:41:50,805 INFO ]: ChcToBoogie initialized [2018-06-26 18:41:50,810 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50 Unit [2018-06-26 18:41:50,861 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:41:50,862 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:41:50,862 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:41:50,862 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:41:50,883 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,884 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,890 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,890 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,894 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,896 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,897 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... [2018-06-26 18:41:50,898 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:41:50,899 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:41:50,899 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:41:50,899 INFO ]: RCFGBuilder initialized [2018-06-26 18:41:50,900 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-26 18:41:50,913 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:41:50,913 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:41:50,913 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:41:50,913 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:41:50,913 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:41:50,913 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:41:51,173 INFO ]: Using library mode [2018-06-26 18:41:51,174 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:51 BoogieIcfgContainer [2018-06-26 18:41:51,174 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:41:51,174 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:41:51,174 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:41:51,175 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:41:51,176 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:51" (1/1) ... [2018-06-26 18:41:51,187 INFO ]: Initial Icfg 11 locations, 16 edges [2018-06-26 18:41:51,189 INFO ]: Using Remove infeasible edges [2018-06-26 18:41:51,189 INFO ]: Using Maximize final states [2018-06-26 18:41:51,190 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:41:51,190 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:41:51,192 INFO ]: Using Remove sink states [2018-06-26 18:41:51,193 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:41:51,193 INFO ]: Using Use SBE [2018-06-26 18:41:51,199 INFO ]: SBE split 0 edges [2018-06-26 18:41:51,204 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 18:41:51,205 INFO ]: 0 new accepting states [2018-06-26 18:41:51,248 INFO ]: Removed 6 edges and 2 locations by large block encoding [2018-06-26 18:41:51,250 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:41:51,251 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:41:51,251 INFO ]: 0 new accepting states [2018-06-26 18:41:51,251 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:41:51,252 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:41:51,252 INFO ]: Encoded RCFG 7 locations, 12 edges [2018-06-26 18:41:51,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:41:51 BasicIcfg [2018-06-26 18:41:51,252 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:41:51,253 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:41:51,253 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:41:51,255 INFO ]: TraceAbstraction initialized [2018-06-26 18:41:51,255 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:41:50" (1/4) ... [2018-06-26 18:41:51,257 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cd185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:41:51, skipping insertion in model container [2018-06-26 18:41:51,257 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:50" (2/4) ... [2018-06-26 18:41:51,257 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cd185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:41:51, skipping insertion in model container [2018-06-26 18:41:51,257 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:51" (3/4) ... [2018-06-26 18:41:51,258 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cd185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:41:51, skipping insertion in model container [2018-06-26 18:41:51,258 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:41:51" (4/4) ... [2018-06-26 18:41:51,260 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:41:51,270 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:41:51,281 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:41:51,325 INFO ]: Using default assertion order modulation [2018-06-26 18:41:51,325 INFO ]: Interprodecural is true [2018-06-26 18:41:51,325 INFO ]: Hoare is false [2018-06-26 18:41:51,325 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:41:51,325 INFO ]: Backedges is TWOTRACK [2018-06-26 18:41:51,325 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:41:51,325 INFO ]: Difference is false [2018-06-26 18:41:51,326 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:41:51,326 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:41:51,334 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 18:41:51,344 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:41:51,344 INFO ]: Found error trace [2018-06-26 18:41:51,345 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:41:51,345 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:51,349 INFO ]: Analyzing trace with hash 35589182, now seen corresponding path program 1 times [2018-06-26 18:41:51,350 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:51,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:51,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,382 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:51,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,418 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:51,480 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:51,482 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:41:51,482 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:41:51,483 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:41:51,493 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:41:51,494 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:51,495 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-26 18:41:51,574 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:51,574 INFO ]: Finished difference Result 9 states and 17 transitions. [2018-06-26 18:41:51,575 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:41:51,576 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:41:51,576 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:51,583 INFO ]: With dead ends: 9 [2018-06-26 18:41:51,583 INFO ]: Without dead ends: 9 [2018-06-26 18:41:51,585 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:51,597 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 18:41:51,613 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-06-26 18:41:51,614 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:41:51,615 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-26 18:41:51,616 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 5 [2018-06-26 18:41:51,616 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:51,616 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-26 18:41:51,616 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:41:51,616 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-26 18:41:51,616 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:41:51,616 INFO ]: Found error trace [2018-06-26 18:41:51,616 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:41:51,617 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:51,617 INFO ]: Analyzing trace with hash 35618973, now seen corresponding path program 1 times [2018-06-26 18:41:51,617 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:51,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:51,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,618 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:51,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,627 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:51,787 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-26 18:41:51,788 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:51,788 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:41:51,788 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:41:51,789 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:41:51,789 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:41:51,789 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:51,790 INFO ]: Start difference. First operand 8 states and 13 transitions. Second operand 3 states. [2018-06-26 18:41:51,902 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:51,902 INFO ]: Finished difference Result 10 states and 18 transitions. [2018-06-26 18:41:51,903 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:41:51,903 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:41:51,903 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:51,903 INFO ]: With dead ends: 10 [2018-06-26 18:41:51,903 INFO ]: Without dead ends: 10 [2018-06-26 18:41:51,904 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:51,904 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 18:41:51,906 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-26 18:41:51,906 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:41:51,906 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-26 18:41:51,906 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 5 [2018-06-26 18:41:51,906 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:51,906 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-26 18:41:51,906 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:41:51,906 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-26 18:41:51,906 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:41:51,906 INFO ]: Found error trace [2018-06-26 18:41:51,906 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:41:51,906 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:51,907 INFO ]: Analyzing trace with hash 35648764, now seen corresponding path program 1 times [2018-06-26 18:41:51,907 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:51,907 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:51,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,908 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:51,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:51,915 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:51,983 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:51,983 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:41:51,983 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:41:51,983 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:41:51,983 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:41:51,984 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:51,984 INFO ]: Start difference. First operand 8 states and 13 transitions. Second operand 3 states. [2018-06-26 18:41:52,059 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:52,059 INFO ]: Finished difference Result 10 states and 18 transitions. [2018-06-26 18:41:52,059 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:41:52,059 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:41:52,059 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:52,060 INFO ]: With dead ends: 10 [2018-06-26 18:41:52,060 INFO ]: Without dead ends: 10 [2018-06-26 18:41:52,060 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:52,060 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 18:41:52,061 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-26 18:41:52,062 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:41:52,062 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-26 18:41:52,062 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 5 [2018-06-26 18:41:52,062 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:52,062 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-26 18:41:52,062 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:41:52,062 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-26 18:41:52,062 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:41:52,062 INFO ]: Found error trace [2018-06-26 18:41:52,062 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:41:52,063 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:52,063 INFO ]: Analyzing trace with hash -175172751, now seen corresponding path program 1 times [2018-06-26 18:41:52,063 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:52,063 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:52,065 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:52,065 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:52,065 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:52,090 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:52,289 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:52,289 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:41:52,289 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:41:52,303 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:52,324 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:52,331 INFO ]: Computing forward predicates... [2018-06-26 18:41:52,581 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:52,601 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:41:52,601 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-26 18:41:52,601 INFO ]: Interpolant automaton has 8 states [2018-06-26 18:41:52,601 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 18:41:52,601 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:41:52,602 INFO ]: Start difference. First operand 8 states and 13 transitions. Second operand 8 states. [2018-06-26 18:41:52,964 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:52,964 INFO ]: Finished difference Result 15 states and 27 transitions. [2018-06-26 18:41:52,965 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-26 18:41:52,965 INFO ]: Start accepts. Automaton has 8 states. Word has length 7 [2018-06-26 18:41:52,965 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:52,965 INFO ]: With dead ends: 15 [2018-06-26 18:41:52,965 INFO ]: Without dead ends: 8 [2018-06-26 18:41:52,965 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:41:52,966 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 18:41:52,967 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 18:41:52,967 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:41:52,967 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-06-26 18:41:52,967 INFO ]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 7 [2018-06-26 18:41:52,967 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:52,967 INFO ]: Abstraction has 8 states and 11 transitions. [2018-06-26 18:41:52,967 INFO ]: Interpolant automaton has 8 states. [2018-06-26 18:41:52,967 INFO ]: Start isEmpty. Operand 8 states and 11 transitions. [2018-06-26 18:41:52,967 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:41:52,967 INFO ]: Found error trace [2018-06-26 18:41:52,967 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:41:52,968 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:52,968 INFO ]: Analyzing trace with hash -146543600, now seen corresponding path program 1 times [2018-06-26 18:41:52,968 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:52,968 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:52,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:52,968 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:52,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:52,985 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:53,078 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:53,078 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:41:53,078 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:41:53,084 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:53,111 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:53,114 INFO ]: Computing forward predicates... [2018-06-26 18:41:53,274 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:53,294 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:41:53,294 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-26 18:41:53,294 INFO ]: Interpolant automaton has 8 states [2018-06-26 18:41:53,294 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 18:41:53,294 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:41:53,294 INFO ]: Start difference. First operand 8 states and 11 transitions. Second operand 8 states. [2018-06-26 18:41:53,651 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-26 18:41:53,754 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:53,754 INFO ]: Finished difference Result 15 states and 25 transitions. [2018-06-26 18:41:53,755 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-26 18:41:53,755 INFO ]: Start accepts. Automaton has 8 states. Word has length 7 [2018-06-26 18:41:53,755 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:53,755 INFO ]: With dead ends: 15 [2018-06-26 18:41:53,755 INFO ]: Without dead ends: 8 [2018-06-26 18:41:53,756 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:41:53,756 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 18:41:53,756 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 18:41:53,756 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:41:53,757 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-26 18:41:53,757 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 7 [2018-06-26 18:41:53,757 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:53,757 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-26 18:41:53,757 INFO ]: Interpolant automaton has 8 states. [2018-06-26 18:41:53,757 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-26 18:41:53,757 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:41:53,757 INFO ]: Found error trace [2018-06-26 18:41:53,757 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:41:53,757 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:53,757 INFO ]: Analyzing trace with hash -117914449, now seen corresponding path program 1 times [2018-06-26 18:41:53,757 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:53,757 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:53,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:53,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:53,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:53,772 INFO ]: Conjunction of SSA is sat [2018-06-26 18:41:53,774 INFO ]: Counterexample might be feasible [2018-06-26 18:41:53,792 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:41:53,793 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:41:53 BasicIcfg [2018-06-26 18:41:53,793 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:41:53,794 INFO ]: Toolchain (without parser) took 2995.06 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 262.5 MB in the beginning and 262.6 MB in the end (delta: -84.0 kB). Peak memory consumption was 19.3 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,795 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:41:53,796 INFO ]: ChcToBoogie took 56.67 ms. Allocated memory is still 306.2 MB. Free memory was 261.5 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,796 INFO ]: Boogie Preprocessor took 36.62 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 258.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,797 INFO ]: RCFGBuilder took 274.99 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 248.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,797 INFO ]: BlockEncodingV2 took 78.17 ms. Allocated memory is still 306.2 MB. Free memory was 248.4 MB in the beginning and 245.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,798 INFO ]: TraceAbstraction took 2540.32 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 245.4 MB in the beginning and 262.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:53,802 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 16 edges - StatisticsResult: Encoded RCFG 7 locations, 12 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.67 ms. Allocated memory is still 306.2 MB. Free memory was 261.5 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.62 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 258.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 274.99 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 248.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 78.17 ms. Allocated memory is still 306.2 MB. Free memory was 248.4 MB in the beginning and 245.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2540.32 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 245.4 MB in the beginning and 262.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 2.2 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, 0); [L0] assume (!(hbv_False_1_Int < hbv_False_2_Int) && !(hbv_False_5_Int < hbv_False_6_Int)) && !(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, hhv_INV_MAIN_42_5_Int := hbv_False_3_Int, hbv_False_5_Int, hbv_False_6_Int, hbv_False_4_Int, hbv_False_1_Int, hbv_False_2_Int; [L0] havoc hbv_False_3_Int, hbv_False_2_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_6_Int, hbv_False_1_Int; [L0] assume (hhv_INV_MAIN_42_0_Int == hbv_INV_MAIN_42_1_Int + 1 && !(hhv_INV_MAIN_42_2_Int < hhv_INV_MAIN_42_1_Int)) && !(hhv_INV_MAIN_42_5_Int < hhv_INV_MAIN_42_4_Int); [L0] hhv_INV_MAIN_23_0_Int, hhv_INV_MAIN_23_1_Int, hhv_INV_MAIN_23_2_Int, hhv_INV_MAIN_23_3_Int, hhv_INV_MAIN_23_4_Int, hhv_INV_MAIN_23_5_Int := hhv_INV_MAIN_42_1_Int, hbv_INV_MAIN_42_1_Int, hhv_INV_MAIN_42_2_Int, hhv_INV_MAIN_42_4_Int, hhv_INV_MAIN_42_3_Int, hhv_INV_MAIN_42_5_Int; [L0] havoc hbv_INV_MAIN_42_1_Int; [L0] assume ((((hbv_INV_MAIN_23_1_Int < hhv_INV_MAIN_23_2_Int && hhv_INV_MAIN_23_3_Int == hbv_INV_MAIN_23_2_Int + 1) && hhv_INV_MAIN_23_4_Int == hbv_INV_MAIN_23_3_Int - 2) && hhv_INV_MAIN_23_0_Int == hbv_INV_MAIN_23_1_Int + 1) && hhv_INV_MAIN_23_1_Int == hbv_INV_MAIN_23_4_Int - 2) && hbv_INV_MAIN_23_2_Int < hhv_INV_MAIN_23_5_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, hhv_INV_MAIN_42_5_Int := hbv_INV_MAIN_23_4_Int, hbv_INV_MAIN_23_1_Int, hhv_INV_MAIN_23_2_Int, hbv_INV_MAIN_23_3_Int, hbv_INV_MAIN_23_2_Int, hhv_INV_MAIN_23_5_Int; [L0] havoc hbv_INV_MAIN_23_1_Int, hbv_INV_MAIN_23_3_Int, hbv_INV_MAIN_23_2_Int, hbv_INV_MAIN_23_4_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 2.4s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 17 SDslu, 72 SDs, 0 SdLazy, 122 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 858 SizeOfPredicates, 24 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 0/4 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__nested-while!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-41-53-814.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__nested-while!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-41-53-814.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__nested-while!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-41-53-814.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__nested-while!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-41-53-814.csv Received shutdown request...