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__bug15.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:42:15,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:42:15,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:42:15,458 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:42:15,458 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:42:15,459 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:42:15,460 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:42:15,464 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:42:15,465 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:42:15,466 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:42:15,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:42:15,467 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:42:15,468 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:42:15,469 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:42:15,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:42:15,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:42:15,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:42:15,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:42:15,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:42:15,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:42:15,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:42:15,479 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:42:15,479 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:42:15,480 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:42:15,480 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:42:15,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:42:15,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:42:15,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:42:15,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:42:15,484 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:42:15,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:42:15,485 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:42:15,486 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:42:15,486 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:42:15,487 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:42:15,487 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:42:15,501 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:42:15,501 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:42:15,501 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:42:15,501 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:42:15,502 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:42:15,503 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:42:15,503 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:42:15,503 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:42:15,503 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:42:15,504 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:42:15,504 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:42:15,504 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:42:15,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:42:15,504 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:42:15,505 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:42:15,505 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:42:15,505 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:42:15,505 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:42:15,505 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:42:15,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:42:15,506 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:42:15,507 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:42:15,507 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:42:15,551 INFO ]: Repository-Root is: /tmp [2018-06-24 21:42:15,563 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:42:15,570 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:42:15,571 INFO ]: Initializing SmtParser... [2018-06-24 21:42:15,571 INFO ]: SmtParser initialized [2018-06-24 21:42:15,572 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 [2018-06-24 21:42:15,573 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 21:42:15,667 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@1889887b [2018-06-24 21:42:15,830 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__bug15.smt2 [2018-06-24 21:42:15,834 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:42:15,839 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:42:15,839 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:42:15,839 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:42:15,840 INFO ]: ChcToBoogie initialized [2018-06-24 21:42:15,843 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,879 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15 Unit [2018-06-24 21:42:15,880 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:42:15,880 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:42:15,880 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:42:15,880 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:42:15,901 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,901 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,906 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,907 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,909 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,912 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,912 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (1/1) ... [2018-06-24 21:42:15,913 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:42:15,914 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:42:15,914 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:42:15,914 INFO ]: RCFGBuilder initialized [2018-06-24 21:42:15,918 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (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 21:42:15,936 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:42:15,936 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:42:15,936 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:42:15,936 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:42:15,936 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:42:15,936 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 21:42:16,102 INFO ]: Using library mode [2018-06-24 21:42:16,102 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:16 BoogieIcfgContainer [2018-06-24 21:42:16,102 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:42:16,103 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:42:16,103 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:42:16,110 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:42:16,111 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:16" (1/1) ... [2018-06-24 21:42:16,139 INFO ]: Initial Icfg 10 locations, 15 edges [2018-06-24 21:42:16,140 INFO ]: Using Remove infeasible edges [2018-06-24 21:42:16,140 INFO ]: Using Maximize final states [2018-06-24 21:42:16,141 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:42:16,141 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:42:16,143 INFO ]: Using Remove sink states [2018-06-24 21:42:16,143 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:42:16,143 INFO ]: Using Use SBE [2018-06-24 21:42:16,148 INFO ]: SBE split 0 edges [2018-06-24 21:42:16,153 INFO ]: Removed 5 edges and 2 locations because of local infeasibility [2018-06-24 21:42:16,154 INFO ]: 0 new accepting states [2018-06-24 21:42:16,190 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:42:16,192 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:16,196 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:42:16,196 INFO ]: 0 new accepting states [2018-06-24 21:42:16,196 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:42:16,196 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:16,196 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:42:16,197 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:16 BasicIcfg [2018-06-24 21:42:16,197 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:42:16,198 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:42:16,198 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:42:16,200 INFO ]: TraceAbstraction initialized [2018-06-24 21:42:16,201 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:15" (1/4) ... [2018-06-24 21:42:16,201 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:42:16, skipping insertion in model container [2018-06-24 21:42:16,202 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:15" (2/4) ... [2018-06-24 21:42:16,202 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:42:16, skipping insertion in model container [2018-06-24 21:42:16,202 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:16" (3/4) ... [2018-06-24 21:42:16,202 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:16, skipping insertion in model container [2018-06-24 21:42:16,202 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:16" (4/4) ... [2018-06-24 21:42:16,204 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:42:16,212 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:42:16,221 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:42:16,268 INFO ]: Using default assertion order modulation [2018-06-24 21:42:16,268 INFO ]: Interprodecural is true [2018-06-24 21:42:16,268 INFO ]: Hoare is false [2018-06-24 21:42:16,268 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:42:16,268 INFO ]: Backedges is TWOTRACK [2018-06-24 21:42:16,268 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:42:16,268 INFO ]: Difference is false [2018-06-24 21:42:16,268 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:42:16,269 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:42:16,276 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:42:16,285 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:42:16,285 INFO ]: Found error trace [2018-06-24 21:42:16,286 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:42:16,286 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:16,291 INFO ]: Analyzing trace with hash 37403521, now seen corresponding path program 1 times [2018-06-24 21:42:16,293 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:16,293 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:16,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:16,330 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:16,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:16,361 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:16,462 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:16,464 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:16,464 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:16,465 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:16,476 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:16,477 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:16,479 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:42:16,561 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:16,561 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:42:16,561 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:16,562 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:42:16,562 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:16,570 INFO ]: With dead ends: 7 [2018-06-24 21:42:16,570 INFO ]: Without dead ends: 7 [2018-06-24 21:42:16,572 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 21:42:16,586 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:42:16,617 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:42:16,622 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:42:16,622 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:42:16,623 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:42:16,623 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:16,623 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:42:16,623 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:16,623 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:42:16,624 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:16,624 INFO ]: Found error trace [2018-06-24 21:42:16,624 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:16,624 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:16,624 INFO ]: Analyzing trace with hash 1159124044, now seen corresponding path program 1 times [2018-06-24 21:42:16,624 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:16,624 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:16,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:16,625 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:16,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:16,635 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:16,796 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:42:16,796 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:16,796 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:16,798 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:16,798 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:16,798 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:16,798 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 3 states. [2018-06-24 21:42:16,871 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:16,871 INFO ]: Finished difference Result 4 states and 8 transitions. [2018-06-24 21:42:16,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:16,872 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:42:16,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:16,872 INFO ]: With dead ends: 4 [2018-06-24 21:42:16,872 INFO ]: Without dead ends: 0 [2018-06-24 21:42:16,873 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:16,873 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:42:16,873 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:42:16,873 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:42:16,873 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:42:16,873 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-24 21:42:16,873 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:16,873 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:42:16,873 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:16,873 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:42:16,873 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:42:16,875 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:42:16,880 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:16 BasicIcfg [2018-06-24 21:42:16,880 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:42:16,881 INFO ]: Toolchain (without parser) took 1045.85 ms. Allocated memory is still 303.0 MB. Free memory was 257.6 MB in the beginning and 226.4 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,883 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:16,884 INFO ]: ChcToBoogie took 40.61 ms. Allocated memory is still 303.0 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,884 INFO ]: Boogie Preprocessor took 33.30 ms. Allocated memory is still 303.0 MB. Free memory was 255.6 MB in the beginning and 254.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,885 INFO ]: RCFGBuilder took 188.16 ms. Allocated memory is still 303.0 MB. Free memory was 254.6 MB in the beginning and 247.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,885 INFO ]: BlockEncodingV2 took 93.98 ms. Allocated memory is still 303.0 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,887 INFO ]: TraceAbstraction took 682.25 ms. Allocated memory is still 303.0 MB. Free memory was 244.5 MB in the beginning and 226.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:16,893 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 15 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 303.0 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 40.61 ms. Allocated memory is still 303.0 MB. Free memory was 257.6 MB in the beginning and 255.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.30 ms. Allocated memory is still 303.0 MB. Free memory was 255.6 MB in the beginning and 254.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 188.16 ms. Allocated memory is still 303.0 MB. Free memory was 254.6 MB in the beginning and 247.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 93.98 ms. Allocated memory is still 303.0 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 682.25 ms. Allocated memory is still 303.0 MB. Free memory was 244.5 MB in the beginning and 226.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 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, 6 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-42-16-911.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-42-16-911.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-42-16-911.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__bug15.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-42-16-911.csv Received shutdown request...