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/sum_cps.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:24:12,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:24:12,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:24:12,201 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:24:12,202 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:24:12,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:24:12,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:24:12,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:24:12,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:24:12,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:24:12,210 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:24:12,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:24:12,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:24:12,212 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:24:12,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:24:12,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:24:12,215 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:24:12,217 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:24:12,218 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:24:12,219 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:24:12,220 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:24:12,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:24:12,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:24:12,223 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:24:12,223 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:24:12,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:24:12,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:24:12,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:24:12,227 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:24:12,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:24:12,227 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:24:12,228 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:24:12,228 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:24:12,229 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:24:12,230 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:24:12,230 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:24:12,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:24:12,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:24:12,244 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:24:12,244 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:24:12,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:24:12,246 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:24:12,246 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:24:12,246 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:24:12,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:24:12,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:24:12,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:24:12,247 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:24:12,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:24:12,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:24:12,247 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:24:12,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:24:12,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:24:12,249 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:24:12,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:24:12,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:24:12,249 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:24:12,251 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:24:12,251 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:24:12,294 INFO ]: Repository-Root is: /tmp [2018-06-24 21:24:12,308 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:24:12,311 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:24:12,312 INFO ]: Initializing SmtParser... [2018-06-24 21:24:12,313 INFO ]: SmtParser initialized [2018-06-24 21:24:12,313 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 [2018-06-24 21:24:12,314 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 21:24:12,394 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 unknown [2018-06-24 21:24:12,639 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum_cps.smt2 [2018-06-24 21:24:12,646 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:24:12,651 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:24:12,652 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:24:12,652 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:24:12,652 INFO ]: ChcToBoogie initialized [2018-06-24 21:24:12,655 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,711 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12 Unit [2018-06-24 21:24:12,711 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:24:12,712 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:24:12,712 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:24:12,712 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:24:12,733 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,733 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,738 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,738 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,742 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,745 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,745 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (1/1) ... [2018-06-24 21:24:12,747 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:24:12,747 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:24:12,747 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:24:12,747 INFO ]: RCFGBuilder initialized [2018-06-24 21:24:12,755 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (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 21:24:12,768 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:24:12,768 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:24:12,768 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:24:12,768 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:24:12,768 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:24:12,768 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 21:24:13,066 INFO ]: Using library mode [2018-06-24 21:24:13,067 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:13 BoogieIcfgContainer [2018-06-24 21:24:13,067 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:24:13,067 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:24:13,067 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:24:13,068 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:24:13,069 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:13" (1/1) ... [2018-06-24 21:24:13,084 INFO ]: Initial Icfg 19 locations, 24 edges [2018-06-24 21:24:13,085 INFO ]: Using Remove infeasible edges [2018-06-24 21:24:13,086 INFO ]: Using Maximize final states [2018-06-24 21:24:13,086 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:24:13,086 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:24:13,088 INFO ]: Using Remove sink states [2018-06-24 21:24:13,089 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:24:13,089 INFO ]: Using Use SBE [2018-06-24 21:24:13,096 INFO ]: SBE split 0 edges [2018-06-24 21:24:13,101 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:24:13,103 INFO ]: 0 new accepting states [2018-06-24 21:24:13,204 INFO ]: Removed 17 edges and 7 locations by large block encoding [2018-06-24 21:24:13,207 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:13,208 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:24:13,208 INFO ]: 0 new accepting states [2018-06-24 21:24:13,208 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:13,208 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:13,209 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:24:13,210 INFO ]: 0 new accepting states [2018-06-24 21:24:13,210 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:24:13,210 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:24:13,211 INFO ]: Encoded RCFG 10 locations, 14 edges [2018-06-24 21:24:13,211 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:13 BasicIcfg [2018-06-24 21:24:13,211 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:24:13,212 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:24:13,212 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:24:13,221 INFO ]: TraceAbstraction initialized [2018-06-24 21:24:13,221 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:24:12" (1/4) ... [2018-06-24 21:24:13,222 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7569d95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:24:13, skipping insertion in model container [2018-06-24 21:24:13,222 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:24:12" (2/4) ... [2018-06-24 21:24:13,222 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7569d95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:24:13, skipping insertion in model container [2018-06-24 21:24:13,222 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:24:13" (3/4) ... [2018-06-24 21:24:13,223 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7569d95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:13, skipping insertion in model container [2018-06-24 21:24:13,224 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:24:13" (4/4) ... [2018-06-24 21:24:13,226 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:24:13,237 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:24:13,243 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:24:13,277 INFO ]: Using default assertion order modulation [2018-06-24 21:24:13,277 INFO ]: Interprodecural is true [2018-06-24 21:24:13,277 INFO ]: Hoare is false [2018-06-24 21:24:13,278 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:24:13,278 INFO ]: Backedges is TWOTRACK [2018-06-24 21:24:13,278 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:24:13,278 INFO ]: Difference is false [2018-06-24 21:24:13,278 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:24:13,278 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:24:13,286 INFO ]: Start isEmpty. Operand 10 states. [2018-06-24 21:24:13,296 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:24:13,296 INFO ]: Found error trace [2018-06-24 21:24:13,297 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:24:13,297 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:13,302 INFO ]: Analyzing trace with hash 35835429, now seen corresponding path program 1 times [2018-06-24 21:24:13,304 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:13,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:13,335 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:13,335 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:13,335 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:13,363 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:13,418 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:24:13,420 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:13,420 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:24:13,421 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:24:13,431 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:24:13,431 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:24:13,433 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-24 21:24:13,513 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:13,513 INFO ]: Finished difference Result 17 states and 25 transitions. [2018-06-24 21:24:13,513 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:24:13,514 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:24:13,514 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:13,522 INFO ]: With dead ends: 17 [2018-06-24 21:24:13,522 INFO ]: Without dead ends: 17 [2018-06-24 21:24:13,524 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 21:24:13,535 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:24:13,556 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:24:13,558 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:24:13,559 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2018-06-24 21:24:13,560 INFO ]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 5 [2018-06-24 21:24:13,561 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:13,561 INFO ]: Abstraction has 17 states and 25 transitions. [2018-06-24 21:24:13,561 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:24:13,561 INFO ]: Start isEmpty. Operand 17 states and 25 transitions. [2018-06-24 21:24:13,562 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:24:13,562 INFO ]: Found error trace [2018-06-24 21:24:13,562 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:24:13,563 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:24:13,563 INFO ]: Analyzing trace with hash -575767634, now seen corresponding path program 1 times [2018-06-24 21:24:13,563 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:24:13,563 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:24:13,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:13,564 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:24:13,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:24:13,596 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:24:13,786 INFO ]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:24:13,786 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:24:13,786 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:24:13,788 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:24:13,788 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:24:13,788 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:24:13,788 INFO ]: Start difference. First operand 17 states and 25 transitions. Second operand 4 states. [2018-06-24 21:24:13,900 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:24:13,900 INFO ]: Finished difference Result 17 states and 25 transitions. [2018-06-24 21:24:13,900 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:24:13,901 INFO ]: Start accepts. Automaton has 4 states. Word has length 15 [2018-06-24 21:24:13,901 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:24:13,901 INFO ]: With dead ends: 17 [2018-06-24 21:24:13,901 INFO ]: Without dead ends: 0 [2018-06-24 21:24:13,902 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:24:13,902 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:24:13,902 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:24:13,902 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:24:13,902 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:24:13,902 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-24 21:24:13,902 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:24:13,902 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:24:13,902 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:24:13,902 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:24:13,902 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:24:13,905 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:24:13,907 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:24:13 BasicIcfg [2018-06-24 21:24:13,907 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:24:13,910 INFO ]: Toolchain (without parser) took 1260.73 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 223.4 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,911 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:24:13,912 INFO ]: ChcToBoogie took 59.81 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 260.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,912 INFO ]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 308.8 MB. Free memory was 260.3 MB in the beginning and 259.3 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,913 INFO ]: RCFGBuilder took 319.81 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 251.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,914 INFO ]: BlockEncodingV2 took 143.56 ms. Allocated memory is still 308.8 MB. Free memory was 251.4 MB in the beginning and 246.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,915 INFO ]: TraceAbstraction took 694.54 ms. Allocated memory is still 308.8 MB. Free memory was 246.4 MB in the beginning and 223.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:24:13,925 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 19 locations, 24 edges - StatisticsResult: Encoded RCFG 10 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.81 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 260.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 308.8 MB. Free memory was 260.3 MB in the beginning and 259.3 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 3.6 GB. * RCFGBuilder took 319.81 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 251.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 143.56 ms. Allocated memory is still 308.8 MB. Free memory was 251.4 MB in the beginning and 246.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 694.54 ms. Allocated memory is still 308.8 MB. Free memory was 246.4 MB in the beginning and 223.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 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, 10 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 6 SDslu, 23 SDs, 0 SdLazy, 13 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=17occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 452 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 9/9 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/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-24-13-945.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-24-13-945.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-24-13-945.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_cps.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-24-13-945.csv Received shutdown request...