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/loop__fib.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:45:09,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:45:09,367 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:45:09,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:45:09,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:45:09,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:45:09,382 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:45:09,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:45:09,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:45:09,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:45:09,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:45:09,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:45:09,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:45:09,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:45:09,397 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:45:09,398 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:45:09,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:45:09,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:45:09,404 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:45:09,417 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:45:09,418 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:45:09,419 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:45:09,421 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:45:09,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:45:09,422 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:45:09,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:45:09,423 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:45:09,424 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:45:09,425 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:45:09,426 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:45:09,426 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:45:09,426 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:45:09,427 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:45:09,427 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:45:09,427 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:45:09,428 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:45:09,428 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:45:09,441 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:45:09,441 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:45:09,442 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:45:09,442 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:45:09,443 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:45:09,443 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:45:09,443 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:45:09,443 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:45:09,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:45:09,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:45:09,445 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:45:09,445 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:45:09,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:45:09,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:45:09,445 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:45:09,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:45:09,446 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:45:09,446 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:45:09,446 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:45:09,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:45:09,447 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:45:09,448 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:45:09,448 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:45:09,501 INFO ]: Repository-Root is: /tmp [2018-06-26 18:45:09,517 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:45:09,524 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:45:09,525 INFO ]: Initializing SmtParser... [2018-06-26 18:45:09,525 INFO ]: SmtParser initialized [2018-06-26 18:45:09,526 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 [2018-06-26 18:45:09,528 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 18:45:09,615 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@e06d54e [2018-06-26 18:45:09,780 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__fib.smt2 [2018-06-26 18:45:09,785 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:45:09,793 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:45:09,793 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:45:09,793 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:45:09,793 INFO ]: ChcToBoogie initialized [2018-06-26 18:45:09,797 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,858 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09 Unit [2018-06-26 18:45:09,859 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:45:09,859 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:45:09,859 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:45:09,859 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:45:09,883 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,883 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,889 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,890 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,893 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,895 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,895 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (1/1) ... [2018-06-26 18:45:09,898 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:45:09,899 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:45:09,899 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:45:09,899 INFO ]: RCFGBuilder initialized [2018-06-26 18:45:09,900 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:45:09,915 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:45:09,915 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:45:09,915 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:45:09,915 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:45:09,915 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:45:09,915 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:45:10,153 INFO ]: Using library mode [2018-06-26 18:45:10,154 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:10 BoogieIcfgContainer [2018-06-26 18:45:10,154 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:45:10,154 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:45:10,154 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:45:10,155 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:45:10,156 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:10" (1/1) ... [2018-06-26 18:45:10,167 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-26 18:45:10,170 INFO ]: Using Remove infeasible edges [2018-06-26 18:45:10,171 INFO ]: Using Maximize final states [2018-06-26 18:45:10,171 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:45:10,172 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:45:10,176 INFO ]: Using Remove sink states [2018-06-26 18:45:10,177 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:45:10,177 INFO ]: Using Use SBE [2018-06-26 18:45:10,184 INFO ]: SBE split 0 edges [2018-06-26 18:45:10,191 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 18:45:10,193 INFO ]: 0 new accepting states [2018-06-26 18:45:10,209 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-26 18:45:10,211 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:45:10,215 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:45:10,215 INFO ]: 0 new accepting states [2018-06-26 18:45:10,216 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:45:10,216 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:45:10,216 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-26 18:45:10,216 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:45:10 BasicIcfg [2018-06-26 18:45:10,216 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:45:10,217 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:45:10,217 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:45:10,221 INFO ]: TraceAbstraction initialized [2018-06-26 18:45:10,221 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:45:09" (1/4) ... [2018-06-26 18:45:10,222 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187776a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:45:10, skipping insertion in model container [2018-06-26 18:45:10,222 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:09" (2/4) ... [2018-06-26 18:45:10,222 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187776a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:45:10, skipping insertion in model container [2018-06-26 18:45:10,222 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:10" (3/4) ... [2018-06-26 18:45:10,222 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187776a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:45:10, skipping insertion in model container [2018-06-26 18:45:10,222 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:45:10" (4/4) ... [2018-06-26 18:45:10,224 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:45:10,232 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:45:10,238 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:45:10,275 INFO ]: Using default assertion order modulation [2018-06-26 18:45:10,275 INFO ]: Interprodecural is true [2018-06-26 18:45:10,275 INFO ]: Hoare is false [2018-06-26 18:45:10,275 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:45:10,276 INFO ]: Backedges is TWOTRACK [2018-06-26 18:45:10,276 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:45:10,276 INFO ]: Difference is false [2018-06-26 18:45:10,276 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:45:10,276 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:45:10,289 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 18:45:10,299 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:45:10,299 INFO ]: Found error trace [2018-06-26 18:45:10,300 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:45:10,300 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:10,305 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-26 18:45:10,307 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:10,308 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:10,347 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,347 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:10,347 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,381 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:10,464 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:10,467 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:45:10,467 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:45:10,469 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:45:10,489 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:45:10,490 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:45:10,492 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 18:45:10,587 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:10,588 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-26 18:45:10,588 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:45:10,589 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:45:10,589 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:10,596 INFO ]: With dead ends: 7 [2018-06-26 18:45:10,596 INFO ]: Without dead ends: 7 [2018-06-26 18:45:10,598 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 18:45:10,612 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 18:45:10,639 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 18:45:10,641 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:45:10,641 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 18:45:10,642 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-26 18:45:10,642 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:10,642 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 18:45:10,642 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:45:10,642 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 18:45:10,643 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:45:10,643 INFO ]: Found error trace [2018-06-26 18:45:10,643 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:45:10,643 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:10,643 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-26 18:45:10,643 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:10,643 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:10,644 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,644 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:10,644 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,657 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:10,741 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:10,741 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:45:10,741 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:45:10,743 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:45:10,743 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:45:10,743 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:45:10,743 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 3 states. [2018-06-26 18:45:10,885 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:10,885 INFO ]: Finished difference Result 8 states and 14 transitions. [2018-06-26 18:45:10,886 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:45:10,886 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:45:10,886 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:10,887 INFO ]: With dead ends: 8 [2018-06-26 18:45:10,887 INFO ]: Without dead ends: 8 [2018-06-26 18:45:10,887 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 18:45:10,887 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 18:45:10,888 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 18:45:10,888 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:45:10,889 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-06-26 18:45:10,889 INFO ]: Start accepts. Automaton has 8 states and 14 transitions. Word has length 6 [2018-06-26 18:45:10,889 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:10,889 INFO ]: Abstraction has 8 states and 14 transitions. [2018-06-26 18:45:10,889 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:45:10,889 INFO ]: Start isEmpty. Operand 8 states and 14 transitions. [2018-06-26 18:45:10,889 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:45:10,889 INFO ]: Found error trace [2018-06-26 18:45:10,889 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:45:10,889 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:10,890 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-26 18:45:10,890 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:10,890 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:10,891 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,891 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:10,891 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:10,909 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,069 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:11,069 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:11,069 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 18:45:11,077 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:11,125 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,133 INFO ]: Computing forward predicates... [2018-06-26 18:45:11,214 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:11,235 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:45:11,235 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 18:45:11,235 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:45:11,235 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:45:11,235 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:45:11,235 INFO ]: Start difference. First operand 8 states and 14 transitions. Second operand 5 states. [2018-06-26 18:45:11,389 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:11,389 INFO ]: Finished difference Result 12 states and 23 transitions. [2018-06-26 18:45:11,389 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 18:45:11,389 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 18:45:11,389 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:11,390 INFO ]: With dead ends: 12 [2018-06-26 18:45:11,390 INFO ]: Without dead ends: 12 [2018-06-26 18:45:11,390 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:11,390 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 18:45:11,392 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-26 18:45:11,392 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 18:45:11,392 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-26 18:45:11,392 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-26 18:45:11,392 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:11,392 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-26 18:45:11,392 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:45:11,393 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-26 18:45:11,393 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:45:11,393 INFO ]: Found error trace [2018-06-26 18:45:11,393 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:45:11,393 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:11,393 INFO ]: Analyzing trace with hash 1156320714, now seen corresponding path program 1 times [2018-06-26 18:45:11,393 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:11,393 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:11,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:11,394 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:11,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:11,406 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,462 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:11,462 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:11,462 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 18:45:11,469 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:11,504 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,506 INFO ]: Computing forward predicates... [2018-06-26 18:45:11,594 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:11,626 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:45:11,626 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 18:45:11,626 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:45:11,626 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:45:11,626 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:45:11,627 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 5 states. [2018-06-26 18:45:11,715 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:11,715 INFO ]: Finished difference Result 11 states and 21 transitions. [2018-06-26 18:45:11,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:45:11,715 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 18:45:11,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:11,716 INFO ]: With dead ends: 11 [2018-06-26 18:45:11,716 INFO ]: Without dead ends: 11 [2018-06-26 18:45:11,716 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:45:11,716 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 18:45:11,717 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-26 18:45:11,717 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-26 18:45:11,718 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 21 transitions. [2018-06-26 18:45:11,718 INFO ]: Start accepts. Automaton has 11 states and 21 transitions. Word has length 6 [2018-06-26 18:45:11,718 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:11,718 INFO ]: Abstraction has 11 states and 21 transitions. [2018-06-26 18:45:11,718 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:45:11,718 INFO ]: Start isEmpty. Operand 11 states and 21 transitions. [2018-06-26 18:45:11,718 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:45:11,718 INFO ]: Found error trace [2018-06-26 18:45:11,718 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:45:11,718 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:11,718 INFO ]: Analyzing trace with hash 1485848357, now seen corresponding path program 1 times [2018-06-26 18:45:11,718 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:11,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:11,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:11,719 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:11,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:11,734 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,830 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:11,830 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:11,830 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:45:11,836 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:11,877 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:11,880 INFO ]: Computing forward predicates... [2018-06-26 18:45:11,990 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:12,011 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:45:12,011 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-26 18:45:12,011 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:45:12,012 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:45:12,012 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:12,012 INFO ]: Start difference. First operand 11 states and 21 transitions. Second operand 6 states. [2018-06-26 18:45:12,192 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:12,192 INFO ]: Finished difference Result 12 states and 24 transitions. [2018-06-26 18:45:12,193 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:45:12,193 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 18:45:12,193 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:12,193 INFO ]: With dead ends: 12 [2018-06-26 18:45:12,193 INFO ]: Without dead ends: 12 [2018-06-26 18:45:12,194 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:12,194 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 18:45:12,195 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-26 18:45:12,195 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 18:45:12,195 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-26 18:45:12,195 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 7 [2018-06-26 18:45:12,195 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:12,195 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-26 18:45:12,195 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:45:12,195 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-26 18:45:12,196 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:45:12,196 INFO ]: Found error trace [2018-06-26 18:45:12,196 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-26 18:45:12,196 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:12,196 INFO ]: Analyzing trace with hash 1485878148, now seen corresponding path program 2 times [2018-06-26 18:45:12,196 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:12,196 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:12,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:12,197 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:12,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:12,206 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:12,251 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:12,251 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:12,251 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:45:12,257 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:45:12,281 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:45:12,281 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:12,282 INFO ]: Computing forward predicates... [2018-06-26 18:45:12,314 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:12,336 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:45:12,336 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-26 18:45:12,336 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:45:12,336 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:45:12,336 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:12,336 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 6 states. [2018-06-26 18:45:12,757 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:12,758 INFO ]: Finished difference Result 11 states and 19 transitions. [2018-06-26 18:45:12,758 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-26 18:45:12,758 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 18:45:12,758 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:12,758 INFO ]: With dead ends: 11 [2018-06-26 18:45:12,758 INFO ]: Without dead ends: 0 [2018-06-26 18:45:12,758 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:45:12,758 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:45:12,758 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:45:12,758 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:45:12,758 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:45:12,758 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-26 18:45:12,758 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:12,759 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:45:12,759 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:45:12,759 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:45:12,759 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:45:12,761 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:45:12,762 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:45:12 BasicIcfg [2018-06-26 18:45:12,762 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:45:12,763 INFO ]: Toolchain (without parser) took 2977.83 ms. Allocated memory was 309.3 MB in the beginning and 326.6 MB in the end (delta: 17.3 MB). Free memory was 265.8 MB in the beginning and 269.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:12,770 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:45:12,770 INFO ]: ChcToBoogie took 65.74 ms. Allocated memory is still 309.3 MB. Free memory was 265.8 MB in the beginning and 263.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:12,771 INFO ]: Boogie Preprocessor took 38.93 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:12,771 INFO ]: RCFGBuilder took 255.03 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 254.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:12,772 INFO ]: BlockEncodingV2 took 62.32 ms. Allocated memory is still 309.3 MB. Free memory was 254.6 MB in the beginning and 251.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:12,773 INFO ]: TraceAbstraction took 2545.02 ms. Allocated memory was 309.3 MB in the beginning and 326.6 MB in the end (delta: 17.3 MB). Free memory was 251.6 MB in the beginning and 269.2 MB in the end (delta: -17.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:45:12,781 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 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.74 ms. Allocated memory is still 309.3 MB. Free memory was 265.8 MB in the beginning and 263.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.93 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 255.03 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 254.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 62.32 ms. Allocated memory is still 309.3 MB. Free memory was 254.6 MB in the beginning and 251.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2545.02 ms. Allocated memory was 309.3 MB in the beginning and 326.6 MB in the end (delta: 17.3 MB). Free memory was 251.6 MB in the beginning and 269.2 MB in the end (delta: -17.5 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, 6 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 37 SDs, 0 SdLazy, 136 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 879 SizeOfPredicates, 11 NumberOfNonLiveVariables, 320 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 6/17 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/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-45-12-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-45-12-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-45-12-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__fib.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-45-12-796.csv Received shutdown request...