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/rec__loop_rec.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 22:01:06,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 22:01:06,240 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 22:01:06,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 22:01:06,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 22:01:06,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 22:01:06,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 22:01:06,261 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 22:01:06,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 22:01:06,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 22:01:06,265 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 22:01:06,265 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 22:01:06,266 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 22:01:06,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 22:01:06,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 22:01:06,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 22:01:06,271 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 22:01:06,273 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 22:01:06,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 22:01:06,285 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 22:01:06,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 22:01:06,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 22:01:06,288 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 22:01:06,289 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 22:01:06,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 22:01:06,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 22:01:06,291 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 22:01:06,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 22:01:06,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 22:01:06,295 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 22:01:06,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 22:01:06,296 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 22:01:06,296 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 22:01:06,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 22:01:06,298 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 22:01:06,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 22:01:06,311 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 22:01:06,312 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 22:01:06,312 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 22:01:06,312 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 22:01:06,313 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 22:01:06,313 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 22:01:06,314 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 22:01:06,314 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 22:01:06,314 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 22:01:06,314 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 22:01:06,314 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 22:01:06,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 22:01:06,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 22:01:06,315 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 22:01:06,315 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 22:01:06,315 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 22:01:06,315 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 22:01:06,316 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 22:01:06,316 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 22:01:06,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 22:01:06,316 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 22:01:06,317 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 22:01:06,318 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 22:01:06,365 INFO ]: Repository-Root is: /tmp [2018-06-24 22:01:06,382 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 22:01:06,388 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 22:01:06,389 INFO ]: Initializing SmtParser... [2018-06-24 22:01:06,390 INFO ]: SmtParser initialized [2018-06-24 22:01:06,390 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 [2018-06-24 22:01:06,391 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 22:01:06,484 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@3c84d884 [2018-06-24 22:01:06,693 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 [2018-06-24 22:01:06,698 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 22:01:06,715 INFO ]: Walking toolchain with 5 elements. [2018-06-24 22:01:06,716 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 22:01:06,716 INFO ]: Initializing ChcToBoogie... [2018-06-24 22:01:06,716 INFO ]: ChcToBoogie initialized [2018-06-24 22:01:06,719 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,773 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06 Unit [2018-06-24 22:01:06,773 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 22:01:06,773 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 22:01:06,774 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 22:01:06,774 INFO ]: Boogie Preprocessor initialized [2018-06-24 22:01:06,794 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,794 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,800 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,801 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,806 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,809 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,812 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... [2018-06-24 22:01:06,814 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 22:01:06,814 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 22:01:06,814 INFO ]: Initializing RCFGBuilder... [2018-06-24 22:01:06,814 INFO ]: RCFGBuilder initialized [2018-06-24 22:01:06,822 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 22:01:06,834 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 22:01:06,834 INFO ]: Found specification of procedure gotoProc [2018-06-24 22:01:06,834 INFO ]: Found implementation of procedure gotoProc [2018-06-24 22:01:06,834 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 22:01:06,834 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 22:01:06,834 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 22:01:07,184 INFO ]: Using library mode [2018-06-24 22:01:07,185 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:01:07 BoogieIcfgContainer [2018-06-24 22:01:07,185 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 22:01:07,185 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 22:01:07,185 INFO ]: Initializing BlockEncodingV2... [2018-06-24 22:01:07,186 INFO ]: BlockEncodingV2 initialized [2018-06-24 22:01:07,187 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:01:07" (1/1) ... [2018-06-24 22:01:07,205 INFO ]: Initial Icfg 30 locations, 39 edges [2018-06-24 22:01:07,206 INFO ]: Using Remove infeasible edges [2018-06-24 22:01:07,207 INFO ]: Using Maximize final states [2018-06-24 22:01:07,207 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 22:01:07,208 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 22:01:07,210 INFO ]: Using Remove sink states [2018-06-24 22:01:07,211 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 22:01:07,211 INFO ]: Using Use SBE [2018-06-24 22:01:07,226 INFO ]: SBE split 0 edges [2018-06-24 22:01:07,231 INFO ]: Removed 14 edges and 6 locations because of local infeasibility [2018-06-24 22:01:07,232 INFO ]: 0 new accepting states [2018-06-24 22:01:07,338 INFO ]: Removed 27 edges and 11 locations by large block encoding [2018-06-24 22:01:07,340 INFO ]: Removed 6 edges and 6 locations by removing sink states [2018-06-24 22:01:07,341 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 22:01:07,341 INFO ]: 0 new accepting states [2018-06-24 22:01:07,342 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 22:01:07,342 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 22:01:07,342 INFO ]: Encoded RCFG 7 locations, 8 edges [2018-06-24 22:01:07,342 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 10:01:07 BasicIcfg [2018-06-24 22:01:07,342 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 22:01:07,344 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 22:01:07,344 INFO ]: Initializing TraceAbstraction... [2018-06-24 22:01:07,347 INFO ]: TraceAbstraction initialized [2018-06-24 22:01:07,347 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 10:01:06" (1/4) ... [2018-06-24 22:01:07,348 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6271e4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 10:01:07, skipping insertion in model container [2018-06-24 22:01:07,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:01:06" (2/4) ... [2018-06-24 22:01:07,348 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6271e4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 10:01:07, skipping insertion in model container [2018-06-24 22:01:07,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:01:07" (3/4) ... [2018-06-24 22:01:07,348 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6271e4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 10:01:07, skipping insertion in model container [2018-06-24 22:01:07,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 10:01:07" (4/4) ... [2018-06-24 22:01:07,350 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 22:01:07,359 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 22:01:07,375 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 22:01:07,408 INFO ]: Using default assertion order modulation [2018-06-24 22:01:07,409 INFO ]: Interprodecural is true [2018-06-24 22:01:07,409 INFO ]: Hoare is false [2018-06-24 22:01:07,409 INFO ]: Compute interpolants for FPandBP [2018-06-24 22:01:07,409 INFO ]: Backedges is TWOTRACK [2018-06-24 22:01:07,409 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 22:01:07,409 INFO ]: Difference is false [2018-06-24 22:01:07,409 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 22:01:07,409 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 22:01:07,417 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 22:01:07,426 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 22:01:07,426 INFO ]: Found error trace [2018-06-24 22:01:07,427 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 22:01:07,427 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:01:07,432 INFO ]: Analyzing trace with hash 1303334, now seen corresponding path program 1 times [2018-06-24 22:01:07,434 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:01:07,434 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:01:07,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:01:07,471 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:01:07,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:01:07,505 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:01:07,566 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:01:07,568 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:01:07,569 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:01:07,570 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:01:07,585 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:01:07,586 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:01:07,588 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-24 22:01:07,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:01:07,677 INFO ]: Finished difference Result 11 states and 13 transitions. [2018-06-24 22:01:07,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:01:07,678 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 22:01:07,679 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:01:07,685 INFO ]: With dead ends: 11 [2018-06-24 22:01:07,685 INFO ]: Without dead ends: 11 [2018-06-24 22:01:07,687 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:01:07,699 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 22:01:07,715 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 22:01:07,717 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 22:01:07,717 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-06-24 22:01:07,718 INFO ]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2018-06-24 22:01:07,719 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:01:07,719 INFO ]: Abstraction has 11 states and 13 transitions. [2018-06-24 22:01:07,719 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:01:07,719 INFO ]: Start isEmpty. Operand 11 states and 13 transitions. [2018-06-24 22:01:07,719 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 22:01:07,720 INFO ]: Found error trace [2018-06-24 22:01:07,720 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:01:07,720 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:01:07,720 INFO ]: Analyzing trace with hash -1003934321, now seen corresponding path program 1 times [2018-06-24 22:01:07,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:01:07,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:01:07,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:01:07,721 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:01:07,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:01:07,742 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:01:07,935 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 22:01:07,935 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:01:07,935 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 22:01:07,936 INFO ]: Interpolant automaton has 4 states [2018-06-24 22:01:07,936 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 22:01:07,936 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 22:01:07,937 INFO ]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2018-06-24 22:01:08,048 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:01:08,048 INFO ]: Finished difference Result 6 states and 7 transitions. [2018-06-24 22:01:08,048 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 22:01:08,048 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-24 22:01:08,048 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:01:08,048 INFO ]: With dead ends: 6 [2018-06-24 22:01:08,048 INFO ]: Without dead ends: 0 [2018-06-24 22:01:08,049 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 22:01:08,049 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 22:01:08,049 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 22:01:08,049 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 22:01:08,049 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 22:01:08,049 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 22:01:08,049 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:01:08,049 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 22:01:08,049 INFO ]: Interpolant automaton has 4 states. [2018-06-24 22:01:08,049 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 22:01:08,049 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 22:01:08,051 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 22:01:08,053 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 10:01:08 BasicIcfg [2018-06-24 22:01:08,053 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 22:01:08,055 INFO ]: Toolchain (without parser) took 1355.71 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 218.6 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,056 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 22:01:08,057 INFO ]: ChcToBoogie took 57.50 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,057 INFO ]: Boogie Preprocessor took 40.13 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,058 INFO ]: RCFGBuilder took 370.78 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 249.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,059 INFO ]: BlockEncodingV2 took 157.12 ms. Allocated memory is still 309.3 MB. Free memory was 249.6 MB in the beginning and 242.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,060 INFO ]: TraceAbstraction took 709.60 ms. Allocated memory is still 309.3 MB. Free memory was 242.7 MB in the beginning and 218.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:01:08,065 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 30 locations, 39 edges - StatisticsResult: Encoded RCFG 7 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 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.50 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 40.13 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 370.78 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 249.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 157.12 ms. Allocated memory is still 309.3 MB. Free memory was 249.6 MB in the beginning and 242.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 709.60 ms. Allocated memory is still 309.3 MB. Free memory was 242.7 MB in the beginning and 218.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. 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, 7 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 3 SDslu, 5 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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/rec__loop_rec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_22-01-08-093.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec__loop_rec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_22-01-08-093.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec__loop_rec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_22-01-08-093.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec__loop_rec.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_22-01-08-093.csv Received shutdown request...