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/hopv/lia/mochi/neg2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:23:27,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:23:27,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:23:27,309 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:23:27,309 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:23:27,312 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:23:27,313 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:23:27,315 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:23:27,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:23:27,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:23:27,317 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:23:27,318 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:23:27,319 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:23:27,320 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:23:27,321 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:23:27,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:23:27,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:23:27,326 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:23:27,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:23:27,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:23:27,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:23:27,338 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:23:27,338 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:23:27,338 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:23:27,339 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:23:27,340 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:23:27,340 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:23:27,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:23:27,345 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:23:27,345 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:23:27,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:23:27,346 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:23:27,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:23:27,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:23:27,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:23:27,352 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:23:27,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:23:27,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:23:27,373 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:23:27,374 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:23:27,374 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:23:27,375 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:23:27,375 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:23:27,375 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:23:27,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:23:27,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:23:27,379 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:23:27,379 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:23:27,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:27,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:23:27,380 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:23:27,380 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:23:27,380 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:23:27,381 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:23:27,381 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:23:27,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:23:27,381 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:23:27,382 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:23:27,384 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:23:27,422 INFO ]: Repository-Root is: /tmp [2018-06-24 21:23:27,442 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:23:27,446 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:23:27,446 INFO ]: Initializing SmtParser... [2018-06-24 21:23:27,447 INFO ]: SmtParser initialized [2018-06-24 21:23:27,447 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-24 21:23:27,448 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:23:27,515 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 unknown [2018-06-24 21:23:27,665 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-24 21:23:27,670 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:23:27,676 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:23:27,676 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:23:27,676 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:23:27,676 INFO ]: ChcToBoogie initialized [2018-06-24 21:23:27,680 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,743 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27 Unit [2018-06-24 21:23:27,743 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:23:27,744 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:23:27,744 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:23:27,744 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:23:27,768 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,768 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,773 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,773 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,776 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,778 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,780 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... [2018-06-24 21:23:27,781 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:23:27,782 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:23:27,782 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:23:27,782 INFO ]: RCFGBuilder initialized [2018-06-24 21:23:27,783 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:23:27,796 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:23:27,796 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:23:27,796 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:23:27,796 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:23:27,796 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:23:27,796 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:28,273 INFO ]: Using library mode [2018-06-24 21:23:28,274 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:28 BoogieIcfgContainer [2018-06-24 21:23:28,274 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:23:28,274 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:23:28,274 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:23:28,275 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:23:28,276 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:28" (1/1) ... [2018-06-24 21:23:28,293 INFO ]: Initial Icfg 23 locations, 30 edges [2018-06-24 21:23:28,294 INFO ]: Using Remove infeasible edges [2018-06-24 21:23:28,294 INFO ]: Using Maximize final states [2018-06-24 21:23:28,294 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:23:28,295 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:23:28,297 INFO ]: Using Remove sink states [2018-06-24 21:23:28,298 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:23:28,298 INFO ]: Using Use SBE [2018-06-24 21:23:28,304 INFO ]: SBE split 0 edges [2018-06-24 21:23:28,309 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:23:28,311 INFO ]: 0 new accepting states [2018-06-24 21:23:28,407 INFO ]: Removed 22 edges and 8 locations by large block encoding [2018-06-24 21:23:28,409 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:28,410 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:23:28,410 INFO ]: 0 new accepting states [2018-06-24 21:23:28,411 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:23:28,411 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:28,411 INFO ]: Encoded RCFG 13 locations, 19 edges [2018-06-24 21:23:28,412 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:28 BasicIcfg [2018-06-24 21:23:28,412 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:23:28,413 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:23:28,413 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:23:28,416 INFO ]: TraceAbstraction initialized [2018-06-24 21:23:28,416 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:27" (1/4) ... [2018-06-24 21:23:28,417 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b69be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:23:28, skipping insertion in model container [2018-06-24 21:23:28,417 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:27" (2/4) ... [2018-06-24 21:23:28,417 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b69be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:23:28, skipping insertion in model container [2018-06-24 21:23:28,417 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:28" (3/4) ... [2018-06-24 21:23:28,418 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b69be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:28, skipping insertion in model container [2018-06-24 21:23:28,418 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:28" (4/4) ... [2018-06-24 21:23:28,420 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:23:28,429 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:23:28,447 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:23:28,494 INFO ]: Using default assertion order modulation [2018-06-24 21:23:28,494 INFO ]: Interprodecural is true [2018-06-24 21:23:28,494 INFO ]: Hoare is false [2018-06-24 21:23:28,494 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:23:28,494 INFO ]: Backedges is TWOTRACK [2018-06-24 21:23:28,494 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:23:28,495 INFO ]: Difference is false [2018-06-24 21:23:28,495 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:23:28,495 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:23:28,503 INFO ]: Start isEmpty. Operand 13 states. [2018-06-24 21:23:28,514 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:23:28,515 INFO ]: Found error trace [2018-06-24 21:23:28,516 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:23:28,516 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:28,521 INFO ]: Analyzing trace with hash 1170334, now seen corresponding path program 1 times [2018-06-24 21:23:28,523 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:28,523 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:28,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:28,556 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:28,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:28,593 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:28,645 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:28,646 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:28,646 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:28,647 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:28,657 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:28,658 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:28,660 INFO ]: Start difference. First operand 13 states. Second operand 3 states. [2018-06-24 21:23:28,862 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:28,862 INFO ]: Finished difference Result 23 states and 34 transitions. [2018-06-24 21:23:28,863 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:28,864 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:23:28,864 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:28,872 INFO ]: With dead ends: 23 [2018-06-24 21:23:28,872 INFO ]: Without dead ends: 23 [2018-06-24 21:23:28,873 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:28,886 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:23:28,907 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-24 21:23:28,908 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:23:28,912 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2018-06-24 21:23:28,913 INFO ]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 4 [2018-06-24 21:23:28,914 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:28,914 INFO ]: Abstraction has 23 states and 34 transitions. [2018-06-24 21:23:28,914 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:28,914 INFO ]: Start isEmpty. Operand 23 states and 34 transitions. [2018-06-24 21:23:28,916 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:23:28,916 INFO ]: Found error trace [2018-06-24 21:23:28,916 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:28,916 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:28,916 INFO ]: Analyzing trace with hash 631993445, now seen corresponding path program 1 times [2018-06-24 21:23:28,916 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:28,916 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:28,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:28,917 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:28,917 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:28,922 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:28,953 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:28,953 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:28,953 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:28,954 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:28,955 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:28,955 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:28,955 INFO ]: Start difference. First operand 23 states and 34 transitions. Second operand 3 states. [2018-06-24 21:23:29,243 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:29,243 INFO ]: Finished difference Result 33 states and 50 transitions. [2018-06-24 21:23:29,244 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:29,244 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-24 21:23:29,244 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:29,246 INFO ]: With dead ends: 33 [2018-06-24 21:23:29,246 INFO ]: Without dead ends: 33 [2018-06-24 21:23:29,247 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:29,247 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-24 21:23:29,255 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-24 21:23:29,257 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-24 21:23:29,259 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2018-06-24 21:23:29,259 INFO ]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 8 [2018-06-24 21:23:29,259 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:29,259 INFO ]: Abstraction has 33 states and 50 transitions. [2018-06-24 21:23:29,259 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:29,259 INFO ]: Start isEmpty. Operand 33 states and 50 transitions. [2018-06-24 21:23:29,264 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-24 21:23:29,264 INFO ]: Found error trace [2018-06-24 21:23:29,264 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:29,265 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:29,265 INFO ]: Analyzing trace with hash -1870891028, now seen corresponding path program 1 times [2018-06-24 21:23:29,265 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:29,265 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:29,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:29,265 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:29,266 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:29,295 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:29,516 INFO ]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:23:29,516 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:29,516 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 [2018-06-24 21:23:29,535 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:29,593 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:29,603 INFO ]: Computing forward predicates... [2018-06-24 21:23:30,303 INFO ]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:23:30,336 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:30,336 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-24 21:23:30,336 INFO ]: Interpolant automaton has 16 states [2018-06-24 21:23:30,337 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-24 21:23:30,337 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:23:30,337 INFO ]: Start difference. First operand 33 states and 50 transitions. Second operand 16 states. [2018-06-24 21:23:31,120 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:31,121 INFO ]: Finished difference Result 59 states and 97 transitions. [2018-06-24 21:23:31,121 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-24 21:23:31,121 INFO ]: Start accepts. Automaton has 16 states. Word has length 20 [2018-06-24 21:23:31,121 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:31,125 INFO ]: With dead ends: 59 [2018-06-24 21:23:31,125 INFO ]: Without dead ends: 46 [2018-06-24 21:23:31,126 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2018-06-24 21:23:31,126 INFO ]: Start minimizeSevpa. Operand 46 states. [2018-06-24 21:23:31,150 INFO ]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-06-24 21:23:31,150 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-24 21:23:31,152 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2018-06-24 21:23:31,152 INFO ]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 20 [2018-06-24 21:23:31,154 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:31,154 INFO ]: Abstraction has 43 states and 73 transitions. [2018-06-24 21:23:31,154 INFO ]: Interpolant automaton has 16 states. [2018-06-24 21:23:31,154 INFO ]: Start isEmpty. Operand 43 states and 73 transitions. [2018-06-24 21:23:31,156 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-24 21:23:31,156 INFO ]: Found error trace [2018-06-24 21:23:31,157 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:31,157 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:31,158 INFO ]: Analyzing trace with hash 1272871792, now seen corresponding path program 1 times [2018-06-24 21:23:31,158 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:31,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:31,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:31,159 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:31,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:31,174 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:31,335 INFO ]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:23:31,335 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:31,335 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 [2018-06-24 21:23:31,346 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:31,375 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:31,379 INFO ]: Computing forward predicates... [2018-06-24 21:23:31,529 INFO ]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:23:31,557 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:31,557 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-24 21:23:31,557 INFO ]: Interpolant automaton has 16 states [2018-06-24 21:23:31,558 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-24 21:23:31,558 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:23:31,558 INFO ]: Start difference. First operand 43 states and 73 transitions. Second operand 16 states. [2018-06-24 21:23:31,955 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:31,955 INFO ]: Finished difference Result 35 states and 49 transitions. [2018-06-24 21:23:31,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-24 21:23:31,956 INFO ]: Start accepts. Automaton has 16 states. Word has length 20 [2018-06-24 21:23:31,956 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:31,956 INFO ]: With dead ends: 35 [2018-06-24 21:23:31,956 INFO ]: Without dead ends: 0 [2018-06-24 21:23:31,957 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:23:31,957 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:23:31,957 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:23:31,957 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:23:31,957 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:23:31,957 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-06-24 21:23:31,957 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:31,957 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:23:31,957 INFO ]: Interpolant automaton has 16 states. [2018-06-24 21:23:31,957 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:23:31,957 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:23:31,959 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:23:31,960 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:31 BasicIcfg [2018-06-24 21:23:31,960 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:23:31,961 INFO ]: Toolchain (without parser) took 4291.28 ms. Allocated memory was 306.7 MB in the beginning and 339.7 MB in the end (delta: 33.0 MB). Free memory was 263.1 MB in the beginning and 281.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:31,963 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:31,963 INFO ]: ChcToBoogie took 67.54 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:31,964 INFO ]: Boogie Preprocessor took 37.06 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:31,964 INFO ]: RCFGBuilder took 492.27 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:31,965 INFO ]: BlockEncodingV2 took 137.54 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 246.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:31,965 INFO ]: TraceAbstraction took 3547.70 ms. Allocated memory was 306.7 MB in the beginning and 339.7 MB in the end (delta: 33.0 MB). Free memory was 246.1 MB in the beginning and 281.0 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:31,969 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 23 locations, 30 edges - StatisticsResult: Encoded RCFG 13 locations, 19 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.54 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.06 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 492.27 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 137.54 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 246.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3547.70 ms. Allocated memory was 306.7 MB in the beginning and 339.7 MB in the end (delta: 33.0 MB). Free memory was 246.1 MB in the beginning and 281.0 MB in the end (delta: -34.9 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, 13 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 37 SDslu, 92 SDs, 0 SdLazy, 491 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 86 ConstructedInterpolants, 10 QuantifiedInterpolants, 7193 SizeOfPredicates, 30 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 66/90 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/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-23-31-981.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-23-31-981.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-23-31-981.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-23-31-981.csv Received shutdown request...