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/enc-zip.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:17:56,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:17:56,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:17:56,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:17:56,138 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:17:56,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:17:56,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:17:56,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:17:56,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:17:56,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:17:56,145 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:17:56,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:17:56,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:17:56,149 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:17:56,150 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:17:56,151 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:17:56,159 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:17:56,161 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:17:56,164 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:17:56,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:17:56,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:17:56,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:17:56,170 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:17:56,170 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:17:56,171 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:17:56,172 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:17:56,172 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:17:56,173 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:17:56,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:17:56,174 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:17:56,175 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:17:56,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:17:56,176 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:17:56,176 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:17:56,177 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:17:56,177 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:17:56,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:17:56,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:17:56,194 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:17:56,194 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:17:56,195 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:17:56,195 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:17:56,195 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:17:56,195 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:17:56,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:17:56,199 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:17:56,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:17:56,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:17:56,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:17:56,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:17:56,200 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:17:56,201 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:17:56,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:17:56,201 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:17:56,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:17:56,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:17:56,202 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:17:56,203 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:17:56,203 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:17:56,253 INFO ]: Repository-Root is: /tmp [2018-06-24 21:17:56,264 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:17:56,268 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:17:56,269 INFO ]: Initializing SmtParser... [2018-06-24 21:17:56,269 INFO ]: SmtParser initialized [2018-06-24 21:17:56,270 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 [2018-06-24 21:17:56,271 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 21:17:56,359 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 unknown [2018-06-24 21:17:56,534 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip.smt2 [2018-06-24 21:17:56,539 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:17:56,544 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:17:56,545 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:17:56,545 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:17:56,545 INFO ]: ChcToBoogie initialized [2018-06-24 21:17:56,548 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,601 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56 Unit [2018-06-24 21:17:56,601 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:17:56,602 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:17:56,602 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:17:56,602 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:17:56,623 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,623 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,630 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,630 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,637 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,639 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,640 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,641 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:17:56,642 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:17:56,642 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:17:56,642 INFO ]: RCFGBuilder initialized [2018-06-24 21:17:56,643 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:17:56,658 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:17:56,658 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:17:56,659 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:17:56,659 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:17:56,659 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:17:56,659 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:17:56,891 INFO ]: Using library mode [2018-06-24 21:17:56,892 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:17:56 BoogieIcfgContainer [2018-06-24 21:17:56,892 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:17:56,892 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:17:56,892 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:17:56,900 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:17:56,900 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:17:56" (1/1) ... [2018-06-24 21:17:56,924 INFO ]: Initial Icfg 14 locations, 20 edges [2018-06-24 21:17:56,925 INFO ]: Using Remove infeasible edges [2018-06-24 21:17:56,925 INFO ]: Using Maximize final states [2018-06-24 21:17:56,926 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:17:56,926 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:17:56,928 INFO ]: Using Remove sink states [2018-06-24 21:17:56,929 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:17:56,929 INFO ]: Using Use SBE [2018-06-24 21:17:56,950 INFO ]: SBE split 0 edges [2018-06-24 21:17:56,954 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:17:56,956 INFO ]: 0 new accepting states [2018-06-24 21:17:57,066 INFO ]: Removed 13 edges and 4 locations by large block encoding [2018-06-24 21:17:57,068 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:17:57,069 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:17:57,069 INFO ]: 0 new accepting states [2018-06-24 21:17:57,070 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:17:57,073 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:17:57,073 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:17:57,073 INFO ]: 0 new accepting states [2018-06-24 21:17:57,073 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:17:57,073 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:17:57,073 INFO ]: Encoded RCFG 8 locations, 13 edges [2018-06-24 21:17:57,074 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:17:57 BasicIcfg [2018-06-24 21:17:57,074 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:17:57,075 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:17:57,075 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:17:57,081 INFO ]: TraceAbstraction initialized [2018-06-24 21:17:57,081 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:17:56" (1/4) ... [2018-06-24 21:17:57,082 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a253d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:17:57, skipping insertion in model container [2018-06-24 21:17:57,082 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:17:56" (2/4) ... [2018-06-24 21:17:57,082 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a253d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:17:57, skipping insertion in model container [2018-06-24 21:17:57,082 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:17:56" (3/4) ... [2018-06-24 21:17:57,082 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a253d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:17:57, skipping insertion in model container [2018-06-24 21:17:57,082 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:17:57" (4/4) ... [2018-06-24 21:17:57,085 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:17:57,095 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:17:57,102 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:17:57,145 INFO ]: Using default assertion order modulation [2018-06-24 21:17:57,145 INFO ]: Interprodecural is true [2018-06-24 21:17:57,145 INFO ]: Hoare is false [2018-06-24 21:17:57,145 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:17:57,145 INFO ]: Backedges is TWOTRACK [2018-06-24 21:17:57,145 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:17:57,145 INFO ]: Difference is false [2018-06-24 21:17:57,145 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:17:57,145 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:17:57,154 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:17:57,163 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:17:57,163 INFO ]: Found error trace [2018-06-24 21:17:57,164 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:17:57,164 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:17:57,169 INFO ]: Analyzing trace with hash 35777673, now seen corresponding path program 1 times [2018-06-24 21:17:57,171 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:17:57,171 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:17:57,202 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,202 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:17:57,202 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,233 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:17:57,295 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:17:57,297 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:17:57,297 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:17:57,298 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:17:57,308 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:17:57,308 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:17:57,310 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:17:57,418 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:17:57,418 INFO ]: Finished difference Result 9 states and 14 transitions. [2018-06-24 21:17:57,418 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:17:57,419 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:17:57,419 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:17:57,426 INFO ]: With dead ends: 9 [2018-06-24 21:17:57,426 INFO ]: Without dead ends: 8 [2018-06-24 21:17:57,428 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 21:17:57,440 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:17:57,455 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 21:17:57,456 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 21:17:57,457 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-06-24 21:17:57,458 INFO ]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 5 [2018-06-24 21:17:57,458 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:17:57,458 INFO ]: Abstraction has 8 states and 11 transitions. [2018-06-24 21:17:57,458 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:17:57,458 INFO ]: Start isEmpty. Operand 8 states and 11 transitions. [2018-06-24 21:17:57,459 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:17:57,459 INFO ]: Found error trace [2018-06-24 21:17:57,459 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:17:57,459 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:17:57,459 INFO ]: Analyzing trace with hash 35956419, now seen corresponding path program 1 times [2018-06-24 21:17:57,459 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:17:57,459 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:17:57,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,460 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:17:57,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,472 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:17:57,495 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:17:57,495 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:17:57,495 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:17:57,496 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:17:57,497 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:17:57,497 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:17:57,497 INFO ]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2018-06-24 21:17:57,558 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:17:57,558 INFO ]: Finished difference Result 13 states and 19 transitions. [2018-06-24 21:17:57,561 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:17:57,561 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:17:57,561 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:17:57,562 INFO ]: With dead ends: 13 [2018-06-24 21:17:57,562 INFO ]: Without dead ends: 13 [2018-06-24 21:17:57,563 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 21:17:57,563 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:17:57,566 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:17:57,567 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:17:57,567 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2018-06-24 21:17:57,567 INFO ]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 5 [2018-06-24 21:17:57,568 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:17:57,568 INFO ]: Abstraction has 13 states and 19 transitions. [2018-06-24 21:17:57,568 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:17:57,568 INFO ]: Start isEmpty. Operand 13 states and 19 transitions. [2018-06-24 21:17:57,569 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:17:57,569 INFO ]: Found error trace [2018-06-24 21:17:57,569 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:17:57,569 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:17:57,569 INFO ]: Analyzing trace with hash -938419451, now seen corresponding path program 1 times [2018-06-24 21:17:57,569 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:17:57,569 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:17:57,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,570 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:17:57,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,587 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:17:57,701 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:17:57,701 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:17:57,701 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:17:57,701 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:17:57,701 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:17:57,701 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:17:57,701 INFO ]: Start difference. First operand 13 states and 19 transitions. Second operand 4 states. [2018-06-24 21:17:57,865 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:17:57,865 INFO ]: Finished difference Result 17 states and 24 transitions. [2018-06-24 21:17:57,866 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:17:57,866 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-24 21:17:57,867 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:17:57,869 INFO ]: With dead ends: 17 [2018-06-24 21:17:57,869 INFO ]: Without dead ends: 17 [2018-06-24 21:17:57,869 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 21:17:57,870 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:17:57,874 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-06-24 21:17:57,874 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 21:17:57,877 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2018-06-24 21:17:57,877 INFO ]: Start accepts. Automaton has 16 states and 23 transitions. Word has length 10 [2018-06-24 21:17:57,877 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:17:57,877 INFO ]: Abstraction has 16 states and 23 transitions. [2018-06-24 21:17:57,877 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:17:57,877 INFO ]: Start isEmpty. Operand 16 states and 23 transitions. [2018-06-24 21:17:57,878 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:17:57,878 INFO ]: Found error trace [2018-06-24 21:17:57,878 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:17:57,878 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:17:57,878 INFO ]: Analyzing trace with hash 940102564, now seen corresponding path program 1 times [2018-06-24 21:17:57,878 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:17:57,878 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:17:57,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:17:57,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:17:57,925 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:17:58,143 INFO ]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:17:58,143 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:17:58,144 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 21:17:58,152 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:17:58,187 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:17:58,195 INFO ]: Computing forward predicates... [2018-06-24 21:17:58,601 INFO ]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:17:58,621 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:17:58,621 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-24 21:17:58,621 INFO ]: Interpolant automaton has 10 states [2018-06-24 21:17:58,622 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 21:17:58,622 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:17:58,622 INFO ]: Start difference. First operand 16 states and 23 transitions. Second operand 10 states. [2018-06-24 21:17:59,219 WARN ]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-24 21:17:59,395 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:17:59,396 INFO ]: Finished difference Result 14 states and 20 transitions. [2018-06-24 21:17:59,396 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:17:59,396 INFO ]: Start accepts. Automaton has 10 states. Word has length 15 [2018-06-24 21:17:59,396 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:17:59,396 INFO ]: With dead ends: 14 [2018-06-24 21:17:59,396 INFO ]: Without dead ends: 0 [2018-06-24 21:17:59,397 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-06-24 21:17:59,397 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:17:59,397 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:17:59,397 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:17:59,397 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:17:59,397 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-24 21:17:59,397 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:17:59,397 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:17:59,397 INFO ]: Interpolant automaton has 10 states. [2018-06-24 21:17:59,397 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:17:59,397 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:17:59,399 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:17:59,400 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:17:59 BasicIcfg [2018-06-24 21:17:59,400 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:17:59,401 INFO ]: Toolchain (without parser) took 2861.85 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 265.9 MB in the beginning and 272.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:17:59,402 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:17:59,402 INFO ]: ChcToBoogie took 57.13 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:17:59,403 INFO ]: Boogie Preprocessor took 39.13 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 261.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:17:59,403 INFO ]: RCFGBuilder took 250.16 ms. Allocated memory is still 309.3 MB. Free memory was 261.8 MB in the beginning and 252.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:17:59,404 INFO ]: BlockEncodingV2 took 181.66 ms. Allocated memory is still 309.3 MB. Free memory was 252.8 MB in the beginning and 247.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:17:59,405 INFO ]: TraceAbstraction took 2325.08 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 247.8 MB in the beginning and 272.0 MB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:17:59,409 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 14 locations, 20 edges - StatisticsResult: Encoded RCFG 8 locations, 13 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.13 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.13 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 261.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 250.16 ms. Allocated memory is still 309.3 MB. Free memory was 261.8 MB in the beginning and 252.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 181.66 ms. Allocated memory is still 309.3 MB. Free memory was 252.8 MB in the beginning and 247.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2325.08 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 247.8 MB in the beginning and 272.0 MB in the end (delta: -24.2 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, 8 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 14 SDslu, 54 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 2089 SizeOfPredicates, 10 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 19/25 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/enc-zip.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-17-59-421.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-17-59-421.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-17-59-421.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-17-59-421.csv Received shutdown request...